From rbethman at comcast.net Fri Aug 1 11:22:26 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 11:22:26 -0400 Subject: [AMRadio] Heavy metal sale Update Message-ID: <53DBB0B2.3020308@comcast.net> There is perhaps a misconception as to WHAT a T-213 is. A T-213 is the very latest version of the BC-610. I almost every way, other than the porcelain terminals being removed and replaces with an SO-239, they are completely identical! This one is S/N 65, Made by B&W, and is fully functional. 1) The T-213 went through Depot in '59. Lon Cottingham and Robert Downs rescued it still in the crate. It had been destined for disposal at sea. 2) It comes with all original issue cables. I am open to the idea of "some" trading. A clean R-390A that is fully functional will drop the asking by $800. I would also apply the same to a clean and fully functional SP-600. I am NOT leaving Amateur Radio! I simply can no longer deal with the size and mass of these two beasts! They are standing on a four wheeled moving man dollies, and those will go with them. I have a substantial hand truck that handles 700lbs, and straps that take 400lbs a piece. Those will be available to move them from the Den and out to your provided transport means. However, these items won't go with. One additional piece goes with this package, and it is one JB-70 that needs a top plate made for it, and requires rewiring just inside, as where it came from had an issue with rodents that decided that insulation was delicious! From rbethman at comcast.net Fri Aug 1 14:15:49 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 14:15:49 -0400 Subject: [AMRadio] Getting back on AM Message-ID: <53DBD955.3050502@comcast.net> Well, I know to many, that this is heresy. However, I acquired a Kenwood TS-2000 just completely re-manufactured by Kenwood. It will do 25W on AM. It will do this from 160m through 6m. I will follow it with an Amp Supply LK-500ZB. I already am more than aware of the issues of AM with SS in lieu of tubes! It shouldn't take very long at all to get the mic gain issue under control! I've been that path before. I've done it with a DX-60 and with a Kenwood TS-930SAT. The latter finally went toes up! I can also tie my SP-600 into all this as a separate receiver. It certainly must have better receiving sensitivity than the Kenwood. I may or may not venture into 6m. I don't know how that will fit into the antenna farm. I am adding a 40m Double Bazooka to the morass of wires. Masts from Max Gain are on order. This will put everything up about 15ft higher than I am now. It will also allow for a flatter dipole setup in lieu of this sick inverted vee affair that I'm using now. The final piece to connect the Kenwood to the Amplifier *just* arrived as I was composing this. It is a package that allows these SS rigs to key Amps that use 120VAC/VDC to safely key them without damage. Now it is only a matter of wiring it all together, and solder one dumb wire in the amp that came loose from its relay, and button it all up. Will be trying things out not long from now. Catch y'all on the air! Bob - N0DGN From manualman at juno.com Fri Aug 1 15:39:12 2014 From: manualman at juno.com (manualman at juno.com) Date: Fri, 1 Aug 2014 15:39:12 -0400 Subject: [AMRadio] Getting back on AM Message-ID: I've heard and worked a number of guys using the TS-2000 on AM over the years and it sounds great. You should have a lot of fun with the rig and it only weighs 17 pounds. Pete, wa2cwa On Fri, 01 Aug 2014 14:15:49 -0400 rbethman writes: > Well, > > I know to many, that this is heresy. However, I acquired a Kenwood > > TS-2000 just completely re-manufactured by Kenwood. > > It will do 25W on AM. It will do this from 160m through 6m. > > I will follow it with an Amp Supply LK-500ZB. I already am more > than > aware of the issues of AM with SS in lieu of tubes! > > It shouldn't take very long at all to get the mic gain issue under > control! > > I've been that path before. I've done it with a DX-60 and with a > Kenwood TS-930SAT. The latter finally went toes up! > > I can also tie my SP-600 into all this as a separate receiver. It > certainly must have better receiving sensitivity than the Kenwood. > > I may or may not venture into 6m. I don't know how that will fit > into > the antenna farm. > > I am adding a 40m Double Bazooka to the morass of wires. > > Masts from Max Gain are on order. This will put everything up about > > 15ft higher than I am now. > > It will also allow for a flatter dipole setup in lieu of this sick > inverted vee affair that I'm using now. > > The final piece to connect the Kenwood to the Amplifier *just* > arrived > as I was composing this. > > It is a package that allows these SS rigs to key Amps that use > 120VAC/VDC to safely key them without damage. > > Now it is only a matter of wiring it all together, and solder one > dumb > wire in the amp that came loose from its relay, and button it all > up. > > Will be trying things out not long from now. > > Catch y'all on the air! > > Bob - N0DGN From k2owr at comcast.net Fri Aug 1 17:04:22 2014 From: k2owr at comcast.net (k2owr at comcast.net) Date: Fri, 1 Aug 2014 21:04:22 +0000 (UTC) Subject: [AMRadio] Getting back on AM In-Reply-To: References: Message-ID: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> Likely you will encounter the AM guys who try to entice u to restore one of the antiques. I did it and had a year of fun getting my Valiant 2 up and running. Bill K4owr Sent from Xfinity Connect Mobile App -----Original Message----- From: manualman To: amradio Sent: August 1, 2014, 3:41 PM Subject: Re: [AMRadio] Getting back on AM I've heard and worked a number of guys using the TS-2000 on AM over the years and it sounds great. You should have a lot of fun with the rig and it only weighs 17 pounds. Pete, wa2cwa On Fri, 01 Aug 2014 14:15:49 -0400 rbethman writes: > Well, >> I know to many, that this is heresy. However, I acquired a Kenwood >> TS-2000 just completely re-manufactured by Kenwood. >> It will do 25W on AM. It will do this from 160m through 6m. >> I will follow it with an Amp Supply LK-500ZB. I already am more > than > aware of the issues of AM with SS in lieu of tubes! >> It shouldn't take very long at all to get the mic gain issue under > control! >> I've been that path before. I've done it with a DX-60 and with a > Kenwood TS-930SAT. The latter finally went toes up! >> I can also tie my SP-600 into all this as a separate receiver. It > certainly must have better receiving sensitivity than the Kenwood. >> I may or may not venture into 6m. I don't know how that will fit > into > the antenna farm. >> I am adding a 40m Double Bazooka to the morass of wires. >> Masts from Max Gain are on order. This will put everything up about >> 15ft higher than I am now. >> It will also allow for a flatter dipole setup in lieu of this sick > inverted vee affair that I'm using now. >> The final piece to connect the Kenwood to the Amplifier *just* > arrived > as I was composing this. >> It is a package that allows these SS rigs to key Amps that use > 120VAC/VDC to safely key them without damage. >> Now it is only a matter of wiring it all together, and solder one > dumb > wire in the amp that came loose from its relay, and button it all > up. >> Will be trying things out not long from now. >> Catch y'all on the air! >> Bob - N0DGN ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Archives: http://mailman.qth.net/pipermail/amradio/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio at mailman.qth.net To unsubscribe, send an email to amradio-request at mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From amradio at mailman.qth.net Fri Aug 1 17:29:35 2014 From: amradio at mailman.qth.net (Mel Farrer via AMRadio) Date: Fri, 1 Aug 2014 14:29:35 -0700 Subject: [AMRadio] Getting back on AM In-Reply-To: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> References: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> Message-ID: <1406928575.30781.YahooMailNeo@web163503.mail.gq1.yahoo.com> Fear not warrior,AM really is for everyone.? All methods that generate a clean, smooth, full sounding audio are welcome.? Be it my era, yours, or SDR.? If it is AM and sounds good, you are in.? Welcome back aboard. Mel, K6KBE OK, KX3 3 watts AM K3 25 watts AM + EMTRON DX-2SP +++++ Bauer 707? 375 Watts AM, YEP it all works. On Friday, August 1, 2014 2:06 PM, "k2owr at comcast.net" wrote: Likely you will encounter the AM guys who try to entice u to restore one of the antiques. I did it and had a year of fun getting my Valiant 2 up and running. Bill K4owr Sent from Xfinity Connect Mobile App -----Original Message----- From: manualman To: amradio Sent: August 1, 2014, 3:41 PM Subject: Re: [AMRadio] Getting back on AM I've heard and worked a number of guys using the TS-2000 on AM over the years and it sounds great. You should have a lot of fun with the rig and it only weighs 17 pounds. Pete, wa2cwa On Fri, 01 Aug 2014 14:15:49 -0400 rbethman writes: > Well, >> I know to many, that this is heresy.? However, I acquired a Kenwood >> TS-2000 just completely re-manufactured by Kenwood. >> It will do 25W on AM.? It will do this from 160m through 6m. >> I will follow it with an Amp Supply LK-500ZB.? I already am more > than > aware of the issues of AM with SS in lieu of tubes! >> It shouldn't take very long at all to get the mic gain issue under > control! >> I've been that path before.? I've done it with a DX-60 and with a > Kenwood TS-930SAT.? The latter finally went toes up! >> I can also tie my SP-600 into all this as a separate receiver.? It > certainly must have better receiving sensitivity than the Kenwood. >> I may or may not venture into 6m.? I don't know how that will fit > into > the antenna farm. >> I am adding a 40m Double Bazooka to the morass of wires. >> Masts from Max Gain are on order.? This will put everything up about >> 15ft higher than I am now. >> It will also allow for a flatter dipole setup in lieu of this sick > inverted vee affair that I'm using now. >> The final piece to connect the Kenwood to the Amplifier *just* > arrived > as I was composing this. >> It is a package that allows these SS rigs to key Amps that use > 120VAC/VDC to safely key them without damage. >> Now it is only a matter of wiring it all together, and solder one > dumb > wire in the amp that came loose from its relay, and button it all > up. >> Will be trying things out not long from now. >> Catch y'all on the air! >> Bob - N0DGN ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Archives: http://mailman.qth.net/pipermail/amradio/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio at mailman.qth.net To unsubscribe, send an email to amradio-request at mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Archives: http://mailman.qth.net/pipermail/amradio/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio at mailman.qth.net To unsubscribe, send an email to amradio-request at mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From rbethman at comcast.net Fri Aug 1 17:48:45 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 17:48:45 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> References: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> Message-ID: <53DC0B3D.7000006@comcast.net> I'd say that there is definitely a lack of understanding. I'm doing what I can to get RID of a huge antique! That would be my T-213. It has a 400W carrier, and modulates far beyond what is legal unless I choke the mike gain. Bob - N0DGN On 8/1/2014 5:04 PM, k2owr at comcast.net wrote: > Likely you will encounter the AM guys who try to entice u to restore one of the antiques. I did it and had a year of fun getting my Valiant 2 up and running. Bill K4owr > > Sent from Xfinity Connect Mobile App From amradio at mailman.qth.net Fri Aug 1 17:56:19 2014 From: amradio at mailman.qth.net (Mel Farrer via AMRadio) Date: Fri, 1 Aug 2014 14:56:19 -0700 Subject: [AMRadio] Getting back on AM In-Reply-To: <53DC0B3D.7000006@comcast.net> References: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> <53DC0B3D.7000006@comcast.net> Message-ID: <1406930179.99938.YahooMailNeo@web163505.mail.gq1.yahoo.com> Sorry Bob, Just wanted to make it clear,. at least for me, AM is AM if it sounds good.? I still have room in my wine cellar for my Heavy Metal.? To each his own,? Cheers, Mel, K6KBE On Friday, August 1, 2014 2:48 PM, rbethman wrote: I'd say that there is definitely a lack of understanding. I'm doing what I can to get RID of a huge antique!? That would be my T-213. It has a 400W carrier, and modulates far beyond what is legal unless I choke the mike gain. Bob - N0DGN On 8/1/2014 5:04 PM, k2owr at comcast.net wrote: > Likely you will encounter the AM guys who try to entice u to restore one of the antiques. I did it and had a year of fun getting my Valiant 2 up and running. Bill K4owr > > Sent from Xfinity Connect Mobile App ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Archives: http://mailman.qth.net/pipermail/amradio/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio at mailman.qth.net To unsubscribe, send an email to amradio-request at mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From manualman at juno.com Fri Aug 1 17:58:51 2014 From: manualman at juno.com (manualman at juno.com) Date: Fri, 1 Aug 2014 17:58:51 -0400 Subject: [AMRadio] Getting back on AM Message-ID: If anyone tries to entice you to restore some "antique" to get real "AM", you can always tell them to get a life. I find it's a lot more fun to play on the radio, then to be sticking my nose and soldering iron, for endless amounts of time into some old rig, trying to bring it back to life. Been there and done that. No reason to repeat my history lesson. Pete, wa2cwa On Fri, 01 Aug 2014 17:48:45 -0400 rbethman writes: > I'd say that there is definitely a lack of understanding. > > I'm doing what I can to get RID of a huge antique! That would be my > T-213. > > It has a 400W carrier, and modulates far beyond what is legal unless > I > choke the mike gain. > > Bob - N0DGN > > > > On 8/1/2014 5:04 PM, k2owr at comcast.net wrote: > > Likely you will encounter the AM guys who try to entice u to > restore one of the antiques. I did it and had a year of fun getting > my Valiant 2 up and running. Bill K4owr From rbethman at comcast.net Fri Aug 1 18:26:23 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 18:26:23 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: <1406930179.99938.YahooMailNeo@web163505.mail.gq1.yahoo.com> References: <395091101.2620392.1406927062208.JavaMail.root@comcast.net> <53DC0B3D.7000006@comcast.net> <1406930179.99938.YahooMailNeo@web163505.mail.gq1.yahoo.com> Message-ID: <53DC140F.6050501@comcast.net> Mel, You weren't the one that commented that folks would try to get me to restore an antique! My issue is that the specific antique I'm try to get someone to decide they want, is simply way to heavy, even when sitting on a moving man dolly. The arthritis in the entire spine has just gotten to where I just can't drag that across the carpet any longer. I could go plug it all together and have a ball being one of the "Tall Ships". The mind is really willing, but the body then demands too many pain killers. Even though I'm only 64, I paid my body dues with 20+ years Military service, doing those things that the young always do, yet never grasp the results until way too late! I have the room. It is 27ft X 24 ft. We simply have to take the hand that gets dealt in life. Bob - N0DGN On 8/1/2014 5:56 PM, Mel Farrer wrote: > Sorry Bob, > > Just wanted to make it clear,. at least for me, AM is AM if it sounds > good. I still have room in my wine cellar for my Heavy Metal. To > each his own, Cheers, > Mel, K6KBE > > > On Friday, August 1, 2014 2:48 PM, rbethman wrote: > > > I'd say that there is definitely a lack of understanding. > > I'm doing what I can to get RID of a huge antique! That would be my > T-213. > > It has a 400W carrier, and modulates far beyond what is legal unless I > choke the mike gain. > > Bob - N0DGN From rbethman at comcast.net Fri Aug 1 18:31:38 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 18:31:38 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: References: Message-ID: <53DC154A.2060607@comcast.net> Pete, That antique is ready to connect all back up and let her rip! The issue is trying to move the beast even on the moving man dolly! 400lbs on a carpet, the entire spine loaded with arthritis, the mind is willing and able! The body has issues! As to sticking my nose inside and melting the solder, I still do so quite willingly! Just spent time last year getting an HRO-50 recapped and running last year. Bob - N0DGN On 8/1/2014 5:58 PM, manualman at juno.com wrote: > If anyone tries to entice you to restore some "antique" to get real "AM", > you can always tell them to get a life. I find it's a lot more fun to > play on the radio, then to be sticking my nose and soldering iron, for > endless amounts of time into some old rig, trying to bring it back to > life. Been there and done that. No reason to repeat my history lesson. > > Pete, wa2cwa > > On Fri, 01 Aug 2014 17:48:45 -0400 rbethman > writes: >> I'd say that there is definitely a lack of understanding. >> >> I'm doing what I can to get RID of a huge antique! That would be my >> T-213. >> >> It has a 400W carrier, and modulates far beyond what is legal unless >> I >> choke the mike gain. >> >> Bob - N0DGN From ranchorobbo at gmail.com Fri Aug 1 19:28:41 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Fri, 1 Aug 2014 18:28:41 -0500 Subject: [AMRadio] Getting back on AM In-Reply-To: References: Message-ID: On Fri, Aug 1, 2014 at 4:58 PM, wrote: > If anyone tries to entice you to restore some "antique" to get real "AM", > you can always tell them to get a life. Bob doesn't have to do that. He has a legitimate and acceptable excuse. 73 Rob K5UJ From manualman at juno.com Fri Aug 1 20:22:43 2014 From: manualman at juno.com (manualman at juno.com) Date: Fri, 1 Aug 2014 20:22:43 -0400 Subject: [AMRadio] Getting back on AM Message-ID: Yep, I understand the reasons for selling off the T-213. I'm also giving consideration to selling off my Johnson Thunderbolt and few other 100+ pound rigs that I can hardly lift or push, plus most of them are just dust catchers these days. I still think you'll have a lot of fun with the TS-2000 on AM, CW, SSB, and some digital modes if you desire. The rig is very versatile. Pete, wa2cwa On Fri, 01 Aug 2014 18:31:38 -0400 rbethman writes: > Pete, > > That antique is ready to connect all back up and let her rip! > > The issue is trying to move the beast even on the moving man dolly! > > 400lbs on a carpet, the entire spine loaded with arthritis, the mind > is > willing and able! The body has issues! > > As to sticking my nose inside and melting the solder, I still do so > > quite willingly! > > Just spent time last year getting an HRO-50 recapped and running > last year. > > Bob - N0DGN > > > On 8/1/2014 5:58 PM, manualman at juno.com wrote: > > If anyone tries to entice you to restore some "antique" to get > real "AM", > > you can always tell them to get a life. I find it's a lot more fun > to > > play on the radio, then to be sticking my nose and soldering iron, > for > > endless amounts of time into some old rig, trying to bring it back > to > > life. Been there and done that. No reason to repeat my history > lesson. > > > > Pete, wa2cwa > > > > On Fri, 01 Aug 2014 17:48:45 -0400 rbethman > > > writes: > >> I'd say that there is definitely a lack of understanding. > >> > >> I'm doing what I can to get RID of a huge antique! That would be > my > >> T-213. > >> > >> It has a 400W carrier, and modulates far beyond what is legal > unless > >> I > >> choke the mike gain. > >> > >> Bob - N0DGN From rbethman at comcast.net Fri Aug 1 20:28:43 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 01 Aug 2014 20:28:43 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: References: Message-ID: <53DC30BB.4060308@comcast.net> Rob, You certainly have that correct! I've restored antiques for a long time. Dumping a 400W carrier only means that I'll end up taking Vicodin or some such to get through the stupid arthrotis from dragging the 400lb monster back to the operating position. That critter would put me back into the Tall Ship category real fast! I've simply gotten very tired of the pain levels I deal with. I will continue to restore antiques, just not anything over maybe 85lbs. Then I'd only groan some. I guess folks didn't read my heavy metal sale post. Such is life! Bob - N0DGN On 8/1/2014 7:28 PM, Rob Atkinson wrote: > On Fri, Aug 1, 2014 at 4:58 PM, wrote: >> If anyone tries to entice you to restore some "antique" to get real "AM", >> you can always tell them to get a life. > Bob doesn't have to do that. He has a legitimate and acceptable excuse. > > 73 > Rob > K5UJ From w5jo at brightok.net Fri Aug 1 22:23:34 2014 From: w5jo at brightok.net (Jim Wilhite) Date: Fri, 1 Aug 2014 21:23:34 -0500 Subject: [AMRadio] Getting back on AM In-Reply-To: <53DBD955.3050502@comcast.net> References: <53DBD955.3050502@comcast.net> Message-ID: Operating AM is as more about fraternity than equipment. I enjoy operating my GK 500 but have used modern equipment with an amplifier. No one really cares what equipment you use, only the content of your conversation. At least that is my feeling. I hope to run across you on the air soon Bob. Jim W5JO -----Original Message----- Well, I know to many, that this is heresy. However, I acquired a Kenwood TS-2000 just completely re-manufactured by Kenwood. It will do 25W on AM. It will do this from 160m through 6m. I will follow it with an Amp Supply LK-500ZB. I already am more than aware of the issues of AM with SS in lieu of tubes! From cw_de_n5op at sbcglobal.net Fri Aug 1 22:30:50 2014 From: cw_de_n5op at sbcglobal.net (Kim Elmore) Date: Fri, 01 Aug 2014 21:30:50 -0500 Subject: [AMRadio] Getting back on AM In-Reply-To: References: <53DBD955.3050502@comcast.net> Message-ID: <53DC4D5A.4090002@sbcglobal.net> Yes! What Jim said! In spades! Kim N5OP On 8/1/2014 9:23 PM, Jim Wilhite wrote: > Operating AM is as more about fraternity than equipment. I enjoy > operating my GK 500 but have used modern equipment with an amplifier. > No one really cares what equipment you use, only the content of your > conversation. At least that is my feeling. > > I hope to run across you on the air soon Bob. > > Jim > W5JO > > -----Original Message----- > > Well, > > I know to many, that this is heresy. However, I acquired a Kenwood > TS-2000 just completely re-manufactured by Kenwood. > > It will do 25W on AM. It will do this from 160m through 6m. > > I will follow it with an Amp Supply LK-500ZB. I already am more than > aware of the issues of AM with SS in lieu of tubes! > > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Archives: http://mailman.qth.net/pipermail/amradio/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio at mailman.qth.net > To unsubscribe, send an email to amradio-request at mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL) /"In theory there is no difference between theory and practice. But, in practice, there is." //-- Attributed to many people; it's so true that it doesn't matter who said it./ From pulsarxp at embarqmail.com Fri Aug 1 22:34:23 2014 From: pulsarxp at embarqmail.com (L L bahr ) Date: Fri, 1 Aug 2014 22:34:23 -0400 (EDT) Subject: [AMRadio] Getting back on AM In-Reply-To: Message-ID: <336516015.27532271.1406946863843.JavaMail.root@embarqmail.com> Hi Jim, Yes, you got that right. I enjoy AM but enjoy it most when having QSOs with friends who are also AMers. I also enjoy working and restoring old AM gear as much or more then getting on the air. I really don't get much bang out of using my Yamamatics on CW, SSB, or AM. I do use them, but there is nothing like using a tube rig glowing in the dark with all the transformers humming and relays clanking. Like you, I don't really care what the other guy is using as long as his signal is clean. Bye the way, I love the sound of your Globe King 500! Lee, w0vt ----- Original Message ----- From: "Jim Wilhite" To: "rbethman" , "AM Radio List" Sent: Friday, August 1, 2014 9:23:34 PM Subject: Re: [AMRadio] Getting back on AM Operating AM is as more about fraternity than equipment. I enjoy operating my GK 500 but have used modern equipment with an amplifier. No one really cares what equipment you use, only the content of your conversation. At least that is my feeling. I hope to run across you on the air soon Bob. Jim W5JO From rbethman at comcast.net Sat Aug 2 02:35:21 2014 From: rbethman at comcast.net (rbethman) Date: Sat, 02 Aug 2014 02:35:21 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: References: <53DBD955.3050502@comcast.net> Message-ID: <53DC86A9.7050305@comcast.net> I couldn't agree more! I find the majority of AM operators are an entirely different breed of individuals. Yes, there are "some" exceptions, but exceptions are found in everything people are involved in. I indeed managed some 40mtr QSOs with a bunch of static, and weird band fluctuations. I had a little bit of rain, but nothing like the heavy storms South of me. I'm trying to better understand all the gizmos and seemingly endless number of buttons! I pressed one, and the the VFO took off on scanning. Need to slap that finger! Also paint THAT button some wild color! Trying to recover from pressing the wrong button is frustrating to this old dog! I am a honest to goodness computer nut that did it for years as a SYSADMIN and many other positions. Learning this is probably going to make me crazier than what I already am! That is saying some. The nut that I am, I ran another run of RG-213, and added a 40 meter Double Bazooka in the dark, and slight drizzle. (Told you I am a nut case!) I reached into Illinois, South of Chicago. Not bad at all. Then Radio something Middle East lit up and blew away the entire 7.2+Mc. Wish they'd target THAT operation with a Drone! I'll be listening for any familiar names, and calls. Meantime, I'm having one of those nights when sleep isn't going to happen. Oh well. Bob - N0DGN On 8/1/2014 10:23 PM, Jim Wilhite wrote: > Operating AM is as more about fraternity than equipment. I enjoy > operating my GK 500 but have used modern equipment with an amplifier. > No one really cares what equipment you use, only the content of your > conversation. At least that is my feeling. > > I hope to run across you on the air soon Bob. > > Jim > W5JO From ranchorobbo at gmail.com Sat Aug 2 07:35:27 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Sat, 2 Aug 2014 06:35:27 -0500 Subject: [AMRadio] Getting back on AM In-Reply-To: <53DC86A9.7050305@comcast.net> References: <53DBD955.3050502@comcast.net> <53DC86A9.7050305@comcast.net> Message-ID: I will or course work someone operating a plastic radio on AM--I currently operate a plastic radio on AM after all--but if they are new to AM, I will inform them that no, they are not "done with AM" as certain a know-it-all on eHam will say (every chance he gets) but rather, there is much much more than the plastic radio/leenyar paradigm, and anyone who tells them they can sit back now and just operate is in my opinion, doing them and AM, an injustice. I will encourage them to: Start collecting old radio technical resources such as old handbooks, magazines (QST, Radio News etc.), the Navpers Basic Electronics volume 1 book, radio books by Sterling, LaPorte, and Terman, and of course a subscription to ER and more important, the back issues...in other words begin assembling and using a technical library that is fully AM oriented, Modify his equipment to better handle the AM duty cycle, and start using an oscilloscope to monitor his transmit signal, Begin assembling the tools and constructing a metal workshop and test/repair bench, Begin looking for and acquiring test equipment, Work on making antenna improvements like Bob plans to do, And of course, start looking for vintage gear to fix, restore and return to operating condition. Why all this--because as you all surely know but may have forgotten since many of you did all of this years ago, any true AM operator who neglects this aspect of vintage radio (yes all of this applies to CW as well as AM) is missing out of over 50% of what it means to be an AM operator. It is immensely satisfying to bring a piece of vintage gear into operation, and better yet, punch a chassis and homebrew something, even if it is only a power supply. No one, at least not me, is stating that they have to get into vacuum tube gear--the above can be accomplished with solid state equipment, IF they know what they are doing with it, however most hams seem to gravitate to tube gear because frankly, it is easier to figure out, and (subjectivity here) more fun to use. One sign that a new AM op is advancing is the shedding of his "technological bigotry," the idea that radio communication is essentially impossible without the latest fad boxes being shown indoors at Dayton. They are amazed that gear 60, 70 years old works perfectly well for having an AM ragchew QSO. It is quite a revelation. I mentioned CW above. Sadly, CW is in the grip of this technology bigotry for few CW ops bother to operate vintage gear, and CW is a mode that even more than AM, is the original vintage mode. What happened? What happened is what is now festering in the AM community, the idea that pushing a mode button on a plastic radio is enough, and the old ways can be left behind. We now have CW ops who don't know how to run a separate transmitter and receiver, don't know how to achieve QSK without a plastic radio, and have no idea how to tune a class C final. They think homebrewing is making a balun and restoration is getting an old bug cleaned up and polished. Instead of doing real radio they pass their time arguing on line about which plastic fad box is better, sounding like a bunch of appliance consumers in an audio forum. And I'm speaking of hams who have been licensed for 20+ years, not noobs. It is exceedingly sad to see what has become of the CW community. Is this what we want for AM? I surely hope not. This is why I will go to my grave exhorting AM operators to not let the old ways be forgotten--we are actually the last pool of knowledge for the old CW marine radiotelegraph ops are aging with no one to pass their knowledge on to, and the same is true for the broadcast professionals as those two fields are driven by economic factors. As a hobby, we are not so we are obliged to keep the old knowledge alive. Sure radio will probably be entirely gone in 50 to 100 years but I see no reason why the practice of maintaining and running vintage gear can't be continued. After all, the old gear is dong fine after 70 some odd years and there's no reason why it won't be doing fine years from now when today's highly expensive plastic fad radios are in landfills. 73 Rob K5UJ From rbethman at comcast.net Sat Aug 2 08:36:39 2014 From: rbethman at comcast.net (rbethman) Date: Sat, 02 Aug 2014 08:36:39 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: References: <53DBD955.3050502@comcast.net> <53DC86A9.7050305@comcast.net> Message-ID: <53DCDB57.4070403@comcast.net> Rob and crew, Yes, I am back on. Did a bit of roundtable on 40mtrs just last night. Am I finished burning rosin? Oh heck no! It just won't be any monsters like the one I'm trying to get out of here. I've still got an SP-600, and a poor R-390A that needs a fair bit more TLC before it is ready for listening with. I don't see a Valiant or such in the distance. I'm such a nut case that I strung up the 40mtr Double Bazooka in the dark. Don't ask! I got one of those wild hairs! I still see too many things to work on. I have to get my straight key back into play. That will take me more time copying CW since I haven't done so in a long time. Had to do it for my General in '80, and I'm not letting it go the way of some species of animals that no longer exist. I'll be on this weekend, I hope. It will depend on how my body rides through this bloody weather. Rain hits and arthritis flares up worse than sodium on water. Bob - N0DGN From wa4jk at hughes.net Sat Aug 2 08:44:33 2014 From: wa4jk at hughes.net (Jerry) Date: Sat, 2 Aug 2014 07:44:33 -0500 Subject: [AMRadio] AMRadio Digest, Vol 127, Issue 3 In-Reply-To: References: Message-ID: <2DA95472313F4132A9224B50E5AFEEC8@DonnaPC> Read a lot and I don't comment much...but I'm almost done with the new 20X20 shack... as Jim knows I once had some big iron and I'm going to put on tall ship back together. Bob your right on when to make a decision on enough is enough. I too did my duty for our country and things are showing up later in life from jumping out of perfectly flying aircraft or repelling off cliffs. But I digress. If it weren't for distance the T-213 would fit my needs. I have heard many T-2000 with amps and they will sound great with a little attention on the settings and the mic input. ----- Original Message ----- From: To: Sent: Friday, August 01, 2014 9:23 PM Subject: AMRadio Digest, Vol 127, Issue 3 > Send AMRadio mailing list submissions to > amradio at mailman.qth.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://mailman.qth.net/mailman/listinfo/amradio > or, via email, send a message with subject or body 'help' to > amradio-request at mailman.qth.net > > You can reach the person managing the list at > amradio-owner at mailman.qth.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AMRadio digest..." > > > Today's Topics: > > 1. Re: Getting back on AM (rbethman) > 2. Re: Getting back on AM (rbethman) > 3. Re: Getting back on AM (Rob Atkinson) > 4. Re: Getting back on AM (manualman at juno.com) > 5. Re: Getting back on AM (rbethman) > 6. Re: Getting back on AM (Jim Wilhite) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 01 Aug 2014 18:26:23 -0400 > From: rbethman > To: "amradio at mailman.qth.net" > Subject: Re: [AMRadio] Getting back on AM > Message-ID: <53DC140F.6050501 at comcast.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > Mel, > > You weren't the one that commented that folks would try to get me to > restore an antique! > > My issue is that the specific antique I'm try to get someone to decide > they want, is simply way to heavy, even when sitting on a moving man > dolly. The arthritis in the entire spine has just gotten to where I > just can't drag that across the carpet any longer. > > I could go plug it all together and have a ball being one of the "Tall > Ships". The mind is really willing, but the body then demands too many > pain killers. Even though I'm only 64, I paid my body dues with 20+ > years Military service, doing those things that the young always do, yet > never grasp the results until way too late! > > I have the room. It is 27ft X 24 ft. We simply have to take the hand > that gets dealt in life. > > Bob - N0DGN > > > On 8/1/2014 5:56 PM, Mel Farrer wrote: >> Sorry Bob, >> >> Just wanted to make it clear,. at least for me, AM is AM if it sounds >> good. I still have room in my wine cellar for my Heavy Metal. To >> each his own, Cheers, >> Mel, K6KBE >> >> >> On Friday, August 1, 2014 2:48 PM, rbethman wrote: >> >> >> I'd say that there is definitely a lack of understanding. >> >> I'm doing what I can to get RID of a huge antique! That would be my >> T-213. >> >> It has a 400W carrier, and modulates far beyond what is legal unless I >> choke the mike gain. >> >> Bob - N0DGN > > > > ------------------------------ > > Message: 2 > Date: Fri, 01 Aug 2014 18:31:38 -0400 > From: rbethman > To: amradio at mailman.qth.net > Subject: Re: [AMRadio] Getting back on AM > Message-ID: <53DC154A.2060607 at comcast.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > Pete, > > That antique is ready to connect all back up and let her rip! > > The issue is trying to move the beast even on the moving man dolly! > > 400lbs on a carpet, the entire spine loaded with arthritis, the mind is > willing and able! The body has issues! > > As to sticking my nose inside and melting the solder, I still do so > quite willingly! > > Just spent time last year getting an HRO-50 recapped and running last > year. > > Bob - N0DGN > > > On 8/1/2014 5:58 PM, manualman at juno.com wrote: >> If anyone tries to entice you to restore some "antique" to get real "AM", >> you can always tell them to get a life. I find it's a lot more fun to >> play on the radio, then to be sticking my nose and soldering iron, for >> endless amounts of time into some old rig, trying to bring it back to >> life. Been there and done that. No reason to repeat my history lesson. >> >> Pete, wa2cwa >> >> On Fri, 01 Aug 2014 17:48:45 -0400 rbethman >> writes: >>> I'd say that there is definitely a lack of understanding. >>> >>> I'm doing what I can to get RID of a huge antique! That would be my >>> T-213. >>> >>> It has a 400W carrier, and modulates far beyond what is legal unless >>> I >>> choke the mike gain. >>> >>> Bob - N0DGN > > > > ------------------------------ > > Message: 3 > Date: Fri, 1 Aug 2014 18:28:41 -0500 > From: Rob Atkinson > To: manualman > Cc: Discussion of AM Radio in the Amateur Service > > Subject: Re: [AMRadio] Getting back on AM > Message-ID: > > Content-Type: text/plain; charset=ISO-8859-1 > > On Fri, Aug 1, 2014 at 4:58 PM, wrote: >> If anyone tries to entice you to restore some "antique" to get real "AM", >> you can always tell them to get a life. > > Bob doesn't have to do that. He has a legitimate and acceptable excuse. > > 73 > Rob > K5UJ > > > ------------------------------ > > Message: 4 > Date: Fri, 1 Aug 2014 20:22:43 -0400 > From: > To: rbethman at comcast.net > Cc: amradio at mailman.qth.net > Subject: Re: [AMRadio] Getting back on AM > Message-ID: > Content-Type: text/plain; charset=us-ascii > > Yep, I understand the reasons for selling off the T-213. I'm also giving > consideration to selling off my Johnson Thunderbolt and few other 100+ > pound rigs that I can hardly lift or push, plus most of them are just > dust catchers these days. I still think you'll have a lot of fun with the > TS-2000 on AM, CW, SSB, and some digital modes if you desire. The rig is > very versatile. > > Pete, wa2cwa > > On Fri, 01 Aug 2014 18:31:38 -0400 rbethman > writes: >> Pete, >> >> That antique is ready to connect all back up and let her rip! >> >> The issue is trying to move the beast even on the moving man dolly! >> >> 400lbs on a carpet, the entire spine loaded with arthritis, the mind >> is >> willing and able! The body has issues! >> >> As to sticking my nose inside and melting the solder, I still do so >> >> quite willingly! >> >> Just spent time last year getting an HRO-50 recapped and running >> last year. >> >> Bob - N0DGN >> >> >> On 8/1/2014 5:58 PM, manualman at juno.com wrote: >> > If anyone tries to entice you to restore some "antique" to get >> real "AM", >> > you can always tell them to get a life. I find it's a lot more fun >> to >> > play on the radio, then to be sticking my nose and soldering iron, >> for >> > endless amounts of time into some old rig, trying to bring it back >> to >> > life. Been there and done that. No reason to repeat my history >> lesson. >> > >> > Pete, wa2cwa >> > >> > On Fri, 01 Aug 2014 17:48:45 -0400 rbethman >> >> > writes: >> >> I'd say that there is definitely a lack of understanding. >> >> >> >> I'm doing what I can to get RID of a huge antique! That would be >> my >> >> T-213. >> >> >> >> It has a 400W carrier, and modulates far beyond what is legal >> unless >> >> I >> >> choke the mike gain. >> >> >> >> Bob - N0DGN > > > > ------------------------------ > > Message: 5 > Date: Fri, 01 Aug 2014 20:28:43 -0400 > From: rbethman > To: amradio at mailman.qth.net > Subject: Re: [AMRadio] Getting back on AM > Message-ID: <53DC30BB.4060308 at comcast.net> > Content-Type: text/plain; charset=utf-8; format=flowed > > Rob, > > You certainly have that correct! > > I've restored antiques for a long time. > > Dumping a 400W carrier only means that I'll end up taking Vicodin or > some such to get through the stupid arthrotis from dragging the 400lb > monster back to the operating position. > > That critter would put me back into the Tall Ship category real fast! > > I've simply gotten very tired of the pain levels I deal with. > > I will continue to restore antiques, just not anything over maybe 85lbs. > > Then I'd only groan some. > > I guess folks didn't read my heavy metal sale post. > > Such is life! > > Bob - N0DGN > > > > On 8/1/2014 7:28 PM, Rob Atkinson wrote: >> On Fri, Aug 1, 2014 at 4:58 PM, wrote: >>> If anyone tries to entice you to restore some "antique" to get real >>> "AM", >>> you can always tell them to get a life. >> Bob doesn't have to do that. He has a legitimate and acceptable excuse. >> >> 73 >> Rob >> K5UJ > > > > ------------------------------ > > Message: 6 > Date: Fri, 1 Aug 2014 21:23:34 -0500 > From: "Jim Wilhite" > To: "rbethman" , "AM Radio List" > > Subject: Re: [AMRadio] Getting back on AM > Message-ID: > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=response > > Operating AM is as more about fraternity than equipment. I enjoy > operating > my GK 500 but have used modern equipment with an amplifier. No one really > cares what equipment you use, only the content of your conversation. At > least that is my feeling. > > I hope to run across you on the air soon Bob. > > Jim > W5JO > > -----Original Message----- > > > Well, > > I know to many, that this is heresy. However, I acquired a Kenwood > TS-2000 just completely re-manufactured by Kenwood. > > It will do 25W on AM. It will do this from 160m through 6m. > > I will follow it with an Amp Supply LK-500ZB. I already am more than > aware of the issues of AM with SS in lieu of tubes! > > > > > ------------------------------ > > Subject: Digest Footer > > ______________________________________________________________ > AMRadio mailing list > Home: http://mailman.qth.net/mailman/listinfo/amradio > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio at mailman.qth.net > > > ------------------------------ > > End of AMRadio Digest, Vol 127, Issue 3 > *************************************** > From danyoder.cs at gmail.com Sat Aug 2 09:39:13 2014 From: danyoder.cs at gmail.com (Daniel Yoder) Date: Sat, 2 Aug 2014 09:39:13 -0400 Subject: [AMRadio] Getting back on AM In-Reply-To: <53DCDB57.4070403@comcast.net> References: <53DBD955.3050502@comcast.net> <53DC86A9.7050305@comcast.net> <53DCDB57.4070403@comcast.net> Message-ID: Amen Rob, Viva AM and anything with a tube in it. I would like to say that I have found some pretty knowledgeable tube dudes on audio and guitar forums. They too are helping keep the tube world glowing. Dan W3DKY On Sat, Aug 2, 2014 at 8:36 AM, rbethman wrote: > Rob and crew, > > Yes, I am back on. Did a bit of roundtable on 40mtrs just last night. > > Am I finished burning rosin? Oh heck no! > > It just won't be any monsters like the one I'm trying to get out of here. > > I've still got an SP-600, and a poor R-390A that needs a fair bit more TLC > before it is ready for listening with. > > I don't see a Valiant or such in the distance. > > I'm such a nut case that I strung up the 40mtr Double Bazooka in the dark. > Don't ask! I got one of those wild hairs! > > I still see too many things to work on. I have to get my straight key > back into play. That will take me more time copying CW since I haven't > done so in a long time. > > Had to do it for my General in '80, and I'm not letting it go the way of > some species of animals that no longer exist. > > I'll be on this weekend, I hope. > > It will depend on how my body rides through this bloody weather. Rain > hits and arthritis flares up worse than sodium on water. > > Bob - N0DGN > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Archives: http://mailman.qth.net/pipermail/amradio/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio at mailman.qth.net > To unsubscribe, send an email to amradio-request at mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > From k4kyv at charter.net Sun Aug 3 15:02:12 2014 From: k4kyv at charter.net (Donald Chester) Date: Sun, 3 Aug 2014 14:02:12 -0500 Subject: [AMRadio] AMRadio Digest, Vol 127, Issue 4 In-Reply-To: References: Message-ID: <001c01cfaf4d$6ed502f0$4c7f08d0$@charter.net> Yes, I am aware of a certain "AM is just another mode" element within the AM community. However, except for casual operators who primarily operate other modes but like to occasionally push the AM button on their transceiver, I think most of the active hard-core AMers agree that there is something exceptional about AM that draws us to it, beyond just another button to push or mode switch setting to select. You hit on one reason why I find myself working less and less CW lately. Very rarely do you run into a homebrew rig anymore, and few are interested in conversing about anything radio-related of a technical nature. Increasingly, just exchange names, QTH and signal reports (often bogus 599s after asking for multiple repeats ), followed by brand name and model number of the radio (as if I could be expected to keep track of them all), and then the inevitable TKS FER QSO OM CUL 73 QRZ? I find myself averaging about ten QSOs of that variety for every real conversation that actually interests me, radio or non-radio related. No doubt a computer is used to receive and send much of to-day's CW , by ops incapable of copying by ear. I am told CW readers don't fare so well with code sent with a mechanical bug or hand key; maybe that's the reason for fewer OTA ragchews. Now don't get me wrong; I always welcome a newcomer to AM and do what I can help him get his radio set up to sound good and get the modulation right, but it makes me less prone to operate outside the AM Ghetto (oops... I mean WINDOW), when I call CQ and 90% of the replies are by someone trying out AM for the very first time out of curiosity after hearing my CQ. I make it a point to be friendly, helpful and never condescending; occasionally one of these ops will like what he hears and decide to hang out on AM regularly, maybe even ending up building his own rig or resurrecting a piece of vintage equipment. Some top-shelf AM signals are generated with transceiver + leen-yar, when the AM mode isn't such an afterthought that a quality signal can't be generated no matter what. YMMV. But I hope amateur AM doesn't end up going the way CW has in recent years, and it's nice to occasionally converse with a veteran AMer outside the popular window frequencies. You may be right about radio in another 50 or 100 years. I don't hear that many younger hams on HF regardless of mode. The last great surge of newcomers in their teens and twenties came on the scene in the late 60s and early 70s, making up many of the well-known Tall Ships, who are now in their early sixties. The generations to follow are rather sparse. The AM community (members of all ages) makes up one of the few remaining vestiges of genuine amateur radio to be heard on the bands to-day. Don k4kyv -----Original Message----- From: Rob Atkinson I will or course work someone operating a plastic radio on AM--I currently operate a plastic radio on AM after all--but if they are new to AM, I will inform them that no, they are not "done with AM" as certain a know-it-all on eHam will say (every chance he gets) but rather, there is much much more than the plastic radio/leenyar paradigm, and anyone who tells them they can sit back now and just operate is in my opinion, doing them and AM, an injustice... I mentioned CW above. Sadly, CW is in the grip of this technology bigotry for few CW ops bother to operate vintage gear, and CW is a mode that even more than AM, is the original vintage mode. What happened? What happened is what is now festering in the AM community, the idea that pushing a mode button on a plastic radio is enough, and the old ways can be left behind. We now have CW ops who don't know how to run a separate transmitter and receiver, don't know how to achieve QSK without a plastic radio, and have no idea how to tune a class C final. They think homebrewing is making a balun and restoration is getting an old bug cleaned up and polished. Instead of doing real radio they pass their time arguing on line about which plastic fad box is better, sounding like a bunch of appliance consumers in an audio forum. And I'm speaking of hams who have been licensed for 20+ years, not noobs. It is exceedingly sad to see what has become of the CW community. Is this what we want for AM? I surely hope not. This is why I will go to my grave exhorting AM operators to not let the old ways be forgotten--we are actually the last pool of knowledge for the old CW marine radiotelegraph ops are aging with no one to pass their knowledge on to, and the same is true for the broadcast professionals as those two fields are driven by economic factors. As a hobby, we are not so we are obliged to keep the old knowledge alive. Sure radio will probably be entirely gone in 50 to 100 years but I see no reason why the practice of maintaining and running vintage gear can't be continued. After all, the old gear is dong fine after 70 some odd years and there's no reason why it won't be doing fine years from now when today's highly expensive plastic fad radios are in landfills. 73 Rob K5UJ --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From k4kyv at charter.net Tue Aug 5 11:30:13 2014 From: k4kyv at charter.net (Donald Chester) Date: Tue, 5 Aug 2014 10:30:13 -0500 Subject: [AMRadio] Fatal Accident at W0ZUS Message-ID: <001901cfb0c2$2710a520$7531ef60$@charter.net> Readers may remember the auction a couple of years ago at the estate of Dewey, W0ZUS, in which loads of parts and equipment, including numerous kilowatt size homebrew and converted broadcast transmitters went for pennies on the dollar, largely because of the remote location near Rapid City SD, too far away for most of us to attend. Gary Peterson, K0CX, reports that a person was killed in a tower accident at Dewey's QTH. He was taking down Dewey's 120 ft. 160m vertical when it went over with him and another fellow belted on. He was an experienced climber who had done tower work for his employer for many years. Apparently, he overestimated the strength of the powerline-type base insulators; the remaining 30 ft. of tower went over when the last set of guys was removed. This makes Dewey's passing a double tragedy. I can't imagine how Dewey's widow must feel, nor the lawsuits his estate is likely to face. Not to speak ill of the dead, but there was no excuse for that accident. Sounds like Dewey had three insulators, one in each leg of the tower near the base. Personally, I would never use that type of base insulator, although this is a common method hams use to put up a tower for a vertical. A single insulator on a pivoting base, like the ones used in broadcast service, is much to be preferred. Rohn used to sell three-legged insulators for the 25G and 45G, but they were very specific in NOT recommending this type of insulator for an AM type vertical. But regardless, I can't conceive of an experienced tower worker removing the last set of guys while belted to a tower like that, without first securing temporary guys immediately under each of the last sections before that section was removed. Of course, with a single pivoting type base insulator, temporary guys is a given, because otherwise there would be nothing to hold the tower up until the rest could be dismantled, and this kind of accident would have never happened. Without guys, a 3-legged insulator configuration wouldn't have much more holding strength than a standard pivoting type insulator to keep the tower vertical. This person may have been an experienced CLIMBER, but I suspect he had zero experience erecting and dismantling towers. This proves another point, that there is little reason to be fearful of climbing a tall tower, 100 ft. or more, as long as one is physically fit, equipped with proper safety gear, and the tower structure is secure. You're just as dead after falling 30 feet as from 150 feet. Just because you are only climbing 20 or 30 ft. up on a tower is no reason not to take the same safety precautions as you would climbing all the way to the top. Don k4kyv --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From k4kyv at charter.net Tue Aug 5 15:51:12 2014 From: k4kyv at charter.net (Donald Chester) Date: Tue, 5 Aug 2014 14:51:12 -0500 Subject: [AMRadio] Another lightning storm map Message-ID: <000001cfb0e6$9c274660$d475d320$@charter.net> For years I have used Vaisala. It can be very helpful in deciding whether or not it is worthwhile to fire up the rig, particularly on 160, 80 or 40 on a summer night. http://thunderstorm.vaisala.com/explorer.html Here's another one that not only displays a map, but sends out a click in real time for every strike. And you get the choices of N. America, Europe or Oceania (VK and ZL). http://www.lightningmaps.org/realtime?lang=en Another view: http://www.blitzortung.org/Webpages/index.php?lang=en&page_0=30 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From deswynar at xplornet.ca Fri Aug 8 08:19:13 2014 From: deswynar at xplornet.ca (Eddy Swynar) Date: Fri, 8 Aug 2014 08:19:13 -0400 Subject: [AMRadio] Good Leads Wanted! Message-ID: <2E33A049-23A1-46C5-938C-BD95BC5AE44D@xplornet.ca> Good Day All, I have a friend who is just on the verge of seriously tackling a serious vacuum tube regenerative receiver project, but is presently looking for any & all good literature surrounding the genre... To that end, he has accumulated vintage West Coast & ARRL Handbooks, & various QST articles---but I recommended that first & foremost, he should get his hands on a copy of the book, "SECRETS OF HOMEBUILT REGENERATIVE RECEIVERS" by C.F. Rockey. Unfortunately, the publisher of this book---Lindsay Publications---is no more. Does anyone out there reading this have a copy that they wouldn't ming parting with...? That, or is anyone aware if this very fine publication might be available somewhere on-liine, for free downloading...? Any & all leads are appreciated---thank-you! ~73~ de Eddy VE3CUI - VE3XZ From bsugarberg at core.com Fri Aug 8 10:54:23 2014 From: bsugarberg at core.com (bsugarberg at core.com) Date: Fri, 8 Aug 2014 10:54:23 -0400 (EDT) Subject: [AMRadio] (no subject) Message-ID: <49794.76.244.144.149.1407509663.squirrel@webmail.core.com> Hello Eddy, Here is the cheapest copy I could find: 73, Bruce WA8TNC From rbethman at comcast.net Mon Aug 11 15:31:08 2014 From: rbethman at comcast.net (rbethman) Date: Mon, 11 Aug 2014 15:31:08 -0400 Subject: [AMRadio] Kenwood TS-2000 Message-ID: <53E919FC.4050409@comcast.net> Folks, This is one heck of a fine radio! I've been having a ball with it! I've even gone on AM, fed it into my LK0500ZB. Went on 40mtrs. Had a riot! I got to South of Chicago. The static crashes were out of the world. Yep, I indeed had the PRE on. I wanted to HEAR! The built-in brain filter works just fine! I got it properly adjusted for AM use. Anytime folks want to go AM with even the TS-930SAT, or this one, you really have to dial in the carrier vs. audio gain. If you don't, it will sound crappy. These little wonders are fun to play with, and I for one have been enjoying it immensely! Bob - N0DGN From rbethman at comcast.net Wed Aug 13 19:59:25 2014 From: rbethman at comcast.net (rbethman) Date: Wed, 13 Aug 2014 19:59:25 -0400 Subject: [AMRadio] BIG PRICE REDUCTION Heavy Metal Sale meet both trades and it is FREE! Message-ID: <53EBFBDD.4010206@comcast.net> BIG PRICE REDUCTION NO BS! Price is NOW $600 cash at the door for the first to ARRIVE! I am open to the idea of "some" trading. A clean R-390A that is fully functional will drop the asking by $300 I would also apply the same to a clean and fully functional SP-600. If you bring an SP-600 and an R-390A, both clean and fully functional, the YOU get the T-213 package for FREE! 1 T-213, (S/N 65 - B&W) BC-614 speech amp, BC-939 Antenna Tuner. Tuning units from 2MC through 18MC. All PA Coils to go with the TUs. (almost two sets.) Full complement of tubes, number of spares to include 2A3s, 3B28s, 250TH, several 100THs. 1) The T-213 went through Depot in '59. Lon Cottingham and Robert Downs rescued it still in the crate. It had been destined for disposal at sea. 2) It comes with all original issue cables. One additional piece goes with this package, and it is one JB-70 that needs a top plate made for it, and requires rewiring just inside, as where it came from had an issue with rodents that decided that insulation was delicious! Is sitting on a "moving man dolly", goes with. Have hand truck that handles 700lbs., straps that handle 450lbs. Bring healthy friend! This weighs at least 400lbs. NO SHIPPING! Must pickup! Carrier - 400W - Peak Out - Will exceed legal Input PEP! Must Be throttled by audio gain! Based on Bird Peak reading Watt meter. From rbethman at comcast.net Wed Aug 13 22:01:00 2014 From: rbethman at comcast.net (rbethman) Date: Wed, 13 Aug 2014 22:01:00 -0400 Subject: [AMRadio] BIG PRICE REDUCTION - links to pics Message-ID: <53EC185C.5080507@comcast.net> Folks: They aren't cleaned up, they *are* out of focus - I haven't got any method to take pictures that won't "shake" as I try and hold it! http://home.comcast.net/~rbethman/1.jpg http://home.comcast.net/~rbethman/2.jpg http://home.comcast.net/~rbethman/3.jpg http://home.comcast.net/~rbethman/4.jpg http://home.comcast.net/~rbethman/5.jpg http://home.comcast.net/~rbethman/6.jpg http://home.comcast.net/~rbethman/7.jpg http://home.comcast.net/~rbethman/8.jpg These items need to be cleaned! Been here since 2003! Haven't been used since around 2006? Can't remember. The tuner has tape residue on it. Goo off should remove it without damaging the paint. No, I haven't tried. Personally I could care less! It only has to work! I don't spit and polish anything! The stuff on top of the TX is junk! Will come off when someone gets here! Bob - N0DGN From rbethman at comcast.net Sun Aug 17 12:13:29 2014 From: rbethman at comcast.net (rbethman) Date: Sun, 17 Aug 2014 12:13:29 -0400 Subject: [AMRadio] SOLD - Heavy Metal Message-ID: <53F0D4A9.2050609@comcast.net> I indeed have a buyer. ALL items on my heavy metal sale *are* spoken for! Bob - N0DGN From w4wsz at embarqmail.com Sun Aug 17 19:46:26 2014 From: w4wsz at embarqmail.com (Bob) Date: Sun, 17 Aug 2014 19:46:26 -0400 Subject: [AMRadio] Kenwood TS-930 Message-ID: <002101cfba75$75f675e0$61e361a0$@embarqmail.com> I have a set of fold outs including the large fold out of the schematic. If anyone needs these, drop me an e-mail. 73, Bob,W4WSZ w4wsz at embarqmail.com From w4wsz at embarqmail.com Mon Aug 18 07:13:28 2014 From: w4wsz at embarqmail.com (Bob) Date: Mon, 18 Aug 2014 07:13:28 -0400 Subject: [AMRadio] Foldouts Spoken For Message-ID: <001301cfbad5$700945d0$501bd170$@embarqmail.com> The TS-930 foldouts are no longer available Bob From pete at zilliox.net Tue Aug 19 11:12:52 2014 From: pete at zilliox.net (pete zilliox) Date: Tue, 19 Aug 2014 08:12:52 -0700 Subject: [AMRadio] Audio Limiter for AM HAM TX Message-ID: Forgive this query if it?s been discussed many times before....I've looked on ebaY (yeah I know) for a cost effective simple inexpensive audio chain limiter to use with my Symetrix 528E voice processor that drives my EF Johnson Desk KW AM transmitter. I want to protect the very old Johnson high level modulation transformer from over modulation. I'm totally over whelmed with way too many options on ebaY. I am only looking for a single channel limiting function in a reasonably priced box. I currently use a Nady active (vacuum tube pre-amp) broadcast mic to the 528E followed by a Dorrough Loudness meter in parallel to a line going to the W2IHY 600ohm/Hi Impedance variable level control feeding the Ranger exciter. Recommendations for such an inline limiter, anyone? Thanks Pete ? K5PZ From petef at sprynet.com Tue Aug 19 11:54:42 2014 From: petef at sprynet.com (Pete Ferrand) Date: Tue, 19 Aug 2014 11:54:42 -0400 (EDT) Subject: [AMRadio] Audio Limiter for AM HAM TX Message-ID: <10650332.1408463683813.JavaMail.root@elwamui-polski.atl.sa.earthlink.net> Although I don't use a modulation transformer, limiting builds density and that's what I was after when I bought an Aphex Dominator II limiter tri band limiter. Does everything I expected and wanted it to do. Just about any of the digital processors with limiters such as the Alesis CLX-440 will also provide the brick wall limiting that you're looking for. -Pete WB2QLL Somers, WI -----Original Message----- >From: pete zilliox >Sent: Aug 19, 2014 11:12 AM >To: AM Radio >Subject: [AMRadio] Audio Limiter for AM HAM TX > >Forgive this query if it?s been discussed many times before....I've looked >on ebaY (yeah I know) for a cost effective simple inexpensive audio chain >limiter to use with my Symetrix 528E voice processor that drives my EF >Johnson Desk KW AM transmitter. I want to protect the very old Johnson >high level modulation transformer from over modulation. From ranchorobbo at gmail.com Tue Aug 19 12:07:01 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Tue, 19 Aug 2014 11:07:01 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: References: Message-ID: There are basically two kinds of limiters. One is the studio limiter that has a slower attack and is not an AM broadcast type limiter. The classic version of that is the old UREI 1176. In the Orban blue panel line, the 422. So you need to be sure to get a limiter that is specifically described as a broadcast limiter, i.e. a modulation limiter if you want the fast aggressive limiting that doesn't let any high peaks get by. I have not had experience with all of the old limiters out there but assuming you can't afford anything pricey like an Optimod, then the CRL line of PMC boxes are good. PMC 300, 400 and 450. PMC stands for Peak Modulation Controller. These used to be relatively inexpensive but the prices seem to be creeping up. The Optimod is actually a multi-band compressor and limiter in one box. Inovonics had or has a limiter, the model 222. Less often seen are the Dorrough DAP310, and Gregg Labs and Texar limiters and BL Modulimiter. But a word of caution: Vintage ham AM rigs were not designed to handle compressed limited audio. The mod. iron in your Desk KW may be better off with a mic into the rig and the op keeping an eye on the carrier with an oscilloscope. You may have to modify the rig before you start driving it with heavily limited audio. 73 Rob K5UJ On Tue, Aug 19, 2014 at 10:12 AM, pete zilliox wrote: > Forgive this query if it's been discussed many times before....I've looked > on ebaY (yeah I know) for a cost effective simple inexpensive audio chain > limiter to use with my Symetrix 528E voice processor that drives my EF > Johnson Desk KW AM transmitter. I want to protect the very old Johnson > high level modulation transformer from over modulation. I'm totally over > whelmed with way too many options on ebaY. I am only looking for a single > channel limiting function in a reasonably priced box. I currently use a > Nady active (vacuum tube pre-amp) broadcast mic to the 528E followed by a > Dorrough Loudness meter in parallel to a line going to the W2IHY 600ohm/Hi > Impedance variable level control feeding the Ranger exciter. > Recommendations for such an inline limiter, anyone? Thanks Pete - K5PZ > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Archives: http://mailman.qth.net/pipermail/amradio/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio at mailman.qth.net > To unsubscribe, send an email to amradio-request at mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From ranchorobbo at gmail.com Tue Aug 19 12:17:16 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Tue, 19 Aug 2014 11:17:16 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: References: Message-ID: one additional comment--if you decide to get a mod. limiter, you need one designed for radio broadcast because they will be built to operate in a RF environment. A consumer electronics grade product may lack the shielding and by-pass caps etc. and experience audio distortion from RF. 73 Rob K5UJ From nq5t at tx.rr.com Tue Aug 19 13:39:23 2014 From: nq5t at tx.rr.com (GRANT YOUNGMAN) Date: Tue, 19 Aug 2014 12:39:23 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: References: Message-ID: <47F3F1B2-945B-48B8-9ED9-DC18213850DC@tx.rr.com> The current gold standard in the ham community appears to be the Inovonics 222. The most advantageous thing about it is that the gyrator-based LPF can be modified to limit AM bandwidth to something under the NRSC limit for ham use (a bezillion resistors, but not too bad). The CRL PMC-series limiters are also very effective. Example would be the PMC-450. Both of those boxes seem to go in the $400-450 range give or take, although you can probably find a CRL PMC box for less. I currently have a CRL SMP-950. This is a stereo AM negative peak limiter that can be strapped for mono. It has adjustable asymmetry like most, tilt correction, etc. There?s a simple (one resistor) mod recommended to eliminate an issue with clipping distortion and open up the audio. For some reason, these also don?t seem to be as expensive as some others. I have outboard filtering (4-5 KHz) to keep the bandwidth in check. Like the 222, the AGC can be set so that a slow AGC leveler isn?t really needed in front of it ? so you can drive it direct from the 528E. The 222 can still be purchased new from BSW (maybe it?s NOS), at about double the used price. I don?t know if the 222 is in current production or not. The rest aren?t. Even a CBS Volumax/Audimax would work ok ? just make sure the Volumax is an AM limiter and not an FM version. I would recommend the use of the Audimax leveler with the Volumax. eBay prices on these seem ridiculous to me, though, given their age. I used to use a set of these on a Globe King, and they worked fine. If you?re worried about pushing the mod transformer with asymmetrical limiter output on positive peaks, you can just punch in the phase rotator in the 528e to essentially eliminate the asymmetry. That?s the way I have mine set up (driving a Globe Chump), figuring there?s no need to stress old iron for a few extra positive peaks. Grant NQ5T On Aug 19, 2014, at 10:12 AM, pete zilliox wrote: > Forgive this query if it?s been discussed many times before....I've looked > on ebaY (yeah I know) for a cost effective simple inexpensive audio chain > limiter to use with my Symetrix 528E voice processor that drives my EF > Johnson Desk KW AM transmitter. I want to protect the very old Johnson > high level modulation transformer from over modulation. I'm totally over > whelmed with way too many options on ebaY. I am only looking for a single > channel limiting function in a reasonably priced box. I currently use a > Nady active (vacuum tube pre-amp) broadcast mic to the 528E followed by a > Dorrough Loudness meter in parallel to a line going to the W2IHY 600ohm/Hi > Impedance variable level control feeding the Ranger exciter. > Recommendations for such an inline limiter, anyone? Thanks Pete ? K5PZ From jayw5jay at cox.net Tue Aug 19 16:36:55 2014 From: jayw5jay at cox.net (Jay Bromley) Date: Tue, 19 Aug 2014 15:36:55 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: References: Message-ID: <009b01cfbbed$51713290$f45397b0$@cox.net> I have an Inovonics 222 and it has been a nice processor. However I would love to try a Orban 9100B if anyone has one laying around. :-) 73 de w5jay/jay.. From ranchorobbo at gmail.com Tue Aug 19 17:48:59 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Tue, 19 Aug 2014 16:48:59 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: <47F3F1B2-945B-48B8-9ED9-DC18213850DC@tx.rr.com> References: <47F3F1B2-945B-48B8-9ED9-DC18213850DC@tx.rr.com> Message-ID: On Tue, Aug 19, 2014 at 12:39 PM, GRANT YOUNGMAN wrote: > The current gold standard in the ham community appears to be the Inovonics 222. The most advantageous thing about it is that the gyrator-based LPF can be modified to limit AM bandwidth to something under the NRSC limit for ham use (a bezillion resistors, but not too bad). > I think Inovonics will sell a modification kit and instructions on how to change the cutoff frequency. > The CRL PMC-series limiters are also very effective. Example would be the PMC-450. > > Both of those boxes seem to go in the $400-450 range give or take, although you can probably find a CRL PMC box for less. > It pays to look around. I once got a PMC400 at a hamfest for $20. It just needed some cleanup and a couple of weeks running it. I also found a PMC450 on ebay for $250. > Even a CBS Volumax/Audimax would work ok -- just make sure the Volumax is an AM limiter and not an FM version. I would recommend the use of the Audimax leveler with the Volumax. eBay prices on these seem ridiculous to me, though, given their age. I used to use a set of these on a Globe King, and they worked fine. > I forgot about the CBS Labs gear. Thanks for mentioning it. They show up on ebay also. The problem with setting up a low pass filter in a limiter like the Inovonics 222 is that your bandwidth is fixed at whatever cutoff you choose. If you prefer to vary it with conditions and bands, then it is better to have the limiter running wide open, and select a different cutoff elsewhere. There are passive filter designs. I simply cascade a pair of equalizers, each with 15 dB boost/cut to get enough high frequency attenuation. Jay, I think we'd all love to try a 9000 or 9100 : ) 73 Rob K5UJ From jayw5jay at cox.net Tue Aug 19 17:58:17 2014 From: jayw5jay at cox.net (Jay Bromley) Date: Tue, 19 Aug 2014 16:58:17 -0500 Subject: [AMRadio] Audio Limiter for AM HAM TX In-Reply-To: References: <47F3F1B2-945B-48B8-9ED9-DC18213850DC@tx.rr.com> Message-ID: <00c701cfbbf8$aed6a5e0$0c83f1a0$@cox.net> Jay, I think we'd all love to try a 9000 or 9100 : ) 73 Rob K5UJ Hi Rob, Well they are out there. My friend up north of here found one and it has the LED replacements for the meter. Wow what a show and boy does he sound good! Even if I pony up with the money, you don't see them much that are in nice condition. I was just trying to be sneaky here. Thinking there might be one in a garage not being used. 73 de jay/w5jay.. From amradio at mailman.qth.net Thu Aug 21 20:55:22 2014 From: amradio at mailman.qth.net (k4deejim--- via AMRadio) Date: Thu, 21 Aug 2014 20:55:22 -0400 (EDT) Subject: [AMRadio] FS,HQ-140X w/Speaker Message-ID: <8D18BBAE26BF82C-15A0-176DA@webmail-va010.sysops.aol.com> For Sale, Hammoarlund HQ-140X receiver with matching speaker in original factory boxes. Both units are in excellent working and cosmetic condition . They have been stored for over 50 years . Calibration and audio quality are excellent as well. $300 , prefer not to ship. Jim-K4DEE Located in Easley,SC Tele; 864-655-9570 From kenw8ek at gmail.com Fri Aug 22 13:07:54 2014 From: kenw8ek at gmail.com (Ken Simpson, W8EK) Date: Fri, 22 Aug 2014 13:07:54 -0400 Subject: [AMRadio] Kenwood Items FS Message-ID: <53F778EA.8040409@gmail.com> Kenwood and related Items For Sale: Dual Band FM Transceiver, Two meter muti-mode transceiver, Dual Band HT, Microphones, Original Box, Coaxial Antenna Switches, HT Accessories, Noise Filter, Original Manuals, and more Kenwood TM G-707 A Dual Band Transceiver: The TM-G 707 has an extra-large control panel with the welcoming glow of its amber-colored LCD. The TM-G 707 is extraordinarily user-friendly, which is an important consideration for a mobile rig. This mobile transceiver provides 50 (50/10/5W) watts on 2 meters and 35 (35/10/5W) watts on 440 MHz. The TM-G707A offers features such as memory name function (7 character), S-meter squelch, time-out timer, tone encode/decode, dimmer, and auto power-off. Non-simultaneous cross-band repeater access is supported. A 6 pin mini DIN connector for 1200/9600 bps packet and other digital modes is provided. Receive coverage is 118-174 and 410-524 MHz F3E (FM). Transmit range is 144-148 and 430-450 MHz F3E (FM). Size is 5.5 x 1.7 x 7.4 inches. It requires 13.8 VDC at 11 amps. Features include: 180 Alpha Memories Big Display DTMF Hand Mic. Auto Repeater Offset Guide Function Dimmer Time Out Timer Visual Scan Priority Scan Auto Simplex Checker DTSS Selective Call PL Decode/Encode Packet 1200/9600 DIN plug Hi/Med/Lo RF Out This particular unit is still in its original box. It functions 100%, and looks the same. As best I can tell, all of the little packages of screws, fuses, etc. are included. $250 Kenwood TS-711, multimode 2 meter transceiver: This unit is an FM, SSB, and CW transceiver for 2 meters. It has 40 memory channels, and up to 25 Watts of output power, which is continuously variable (no Hi or Low switch, but a front panel control to continuously vary power). Of course it will scan, and do the things one expects in a 2 meter rig. It has a GASFET in the front end for one of the best receivers I have ever used. The 120 V AC power supply as well as 13 V DC, is built in. The case looks very similar to a TS-440 or TS-450 HF rig. This particular unit is very nice. I do not find any scratches, but it does show slight use. It has the optional TU-5 subaudible tone PL encoder in it, so it can be used with modern repeaters. Power cord and mic are included, with paper work, for $425. Kenwood TH-78 A Dual Band HT: The Kenwood TH-78A is a sophisticated dual-band HT. It has built in tone and paging functions, alphanumeric memory and message paging. Additionally it has dual-frequency receive capability (including VHF+VHF and UHF+UHF). There are 50 memory channels. The operator can choose from 8 different scan types. DTSS allows DTMF access to the transceiver. The receive range is 118-173.995 and 438-449.995 MHz. It has three RF output levels of about 5.0/0.5/0.02 watts. Features include: Two Line LCD Display 50 Memories Alphanumeric Memory Message Paging Cross Band Operation Backlit Keypad Multi Scan Function This one works fine, and looks fine. It includes the HT, rubber duck antenna, wall charger, and paper work. A PB-13 standard battery is included, that holds its charge fine. Also included are two PB-17 heavy duty packs that are in bad condition. $135 Kenwood MC-60 A Deluxe Desk Microphone: The Kenwood MC-60A has been a popular desk mic among Kenwood owners for many years. It has a communication type dynamic unidirectional moving coil type mic element and features UP-DOWN tuning (on compatible Kenwood transceivers) plus a built-in pre-amp. There is a switch for PTT (push to talk) and also a lock feature. The mic impedance may be set for 50K ohms or 500 ohms. The frequency response is 150 Hz to 10 kHz (-6dB) with the Preamp off and 200 Hz to 7 kHz (-6 dB) with the Preamp on. The heavy zinc die-cast base provides extra stability. The mic terminates to a standard 8 pin mic plug. The preamp requires two AA cells which are mounted through the bottom of the base. Please note that the earlier MC-60 (non-"A") version featured a 4 pin mic plug and did not have UP-DOWN tuning. This one works 100% and looks very close to new. With paper work for $100. Hand Microphone with round 8 pin plug for Kenwood, Alinco, etc. This hand mic works great on most Kenwood rigs with the round 8 pin connector, such as the TS-430, TS-440, TM-241, TM-2530, TW-4000, and others, including Alinco and ADI. It says "Electret Condenser Mic" on the back, and "Kenwood" on the front, with no model number. Basically, this mic functions like an MC-43, with a couple more features. It has the mic and PTT switch; it also has up/down switches on the top. There are four "extra" buttons labeled Call, VFO, MR, and PF. What these four buttons do depends on the rig. There is also a "Lock" switch on the back. Regardless if you use the four extra buttons or not, you still have a mic that works like an MC-43. This mic works fine, and looks like new. I am guessing it came with a rig, and was immediately put in the drawer, and never used. $30 Original Boxes for Kenwood VHF / UHF Rigs: The following original boxes for Kenwood equipment are available. They are all in very nice condition, and include the molded styrofoam inserts to protect the rig, plus the box itself. Kenwood TM-221 two meter transceiver $5 Antennas for your HT: All rubber ducks are for 2 meters, are in good condition, and are $10 each, unless stated otherwise. BNC - Dual Band (2 m and 440 MHz) Telescoping antenna provides significant gain when extended, $18 BNC - As used on most HTs, 7 inches long BNC - Original Alinco EA0024, about 4 inches long BNC - Original from Kenwood TH-215, about 5 inches long BNC - "Stubby" about 4 1/2 inches long Type F connector - 6.5 inches long BNC Stubby for 440 MHz, 3 inches long Threaded (as used by Motorola, etc.) stubby for 440 MHz Not a Rubber Duck, but can be used on your HT: Telescoping Antenna w/ BNC about 19 inches long can be used as a quarter wave antenna on 2 m, or on 220, or 450 MHz if telescoped shorter. $12 Accessories for the Kenwood TH-21 / 31 / 41 series HTs: Antenna adapter that fits the TH-21 series HTs, and has an SO-239 on the other end, to accept a PL-259. $5 Antenna adapter that fits the TH-21 series HTs, and has a BNC on the other end. $8 Kenwood SC-8 T "Soft Case" for any of the TH-21 series HTs great condition $12 Original Operating manual for TH-21 HT for 2 meters $8 Kenwood W09-0315 charger This charger is used to charge the larger PB-21 H batteries for the TH-21 series, and also on other Kenwood radios. It has a standard 2.1 mm coaxial connector. $12 HT Belt Clips and Wrist Straps: Belt Clips: All include the hardware with the belt clip and are $6 each. Icom IC-2 AT Kenwood BH-6 Motorola Yaesu FT-207 Yaesu FT-209 Wrist Straps for various HTs - $4 each Kenwood TH-215 / 225 / 415, TR-2500, etc. Kenwood TR-2400 Yaesu FT-209 Two position "Strip Line" Coax Switches: These switches utilize metal cavity construction for max efficiency and high isolation. Isolation is better than 50 dB at 300 MHz with low insertion loss less. All are two position and are typically rated for 2500 W PEP, and good to 600 MHz. Diawa CS-201 - $22 Opek CX-201 - $22 MFJ 1702 C - With center position that grounds both antennas, and added lightning protection. $25 APC "Pro 7" Noise Filter and Surge Suppressor: This unit has 7 outlets, with a 6 foot cord, and provides surge suppressor for your equipment. It also provides noise filtering / EMI / RFI suppression of 60 db. There is $75,000 worth of insurance included. It comes with a lifetime warranty, and I think this is APC's "Top of the line" unit. Detailed specs can be found at http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=PRO7 This one appears to be new, unused, in its original box. $18 Original Manuals for Kenwood equipment: All manuals are in very nice condition, for Kenwood equipment. All are Operating manuals unless otherwise specified. All are original manuals only. SPECIAL: Buy two, three, or four of my books/manuals, and take 10% off. Buy five or more and take 20% off. TH-21 HT for 2 m, $8 TH-215/315/415 HT for 2 m, 220 MHz, or 440 MHz, $10 TH-225, 2 m HT, $12 TH-235, 2 m HT, $15 TH-241/441/541 mobile FM transceivers ...For 2 m, 440 MHz, & 1200 MHz, $12 TM-221/421 2 m or 440 MHz mobile, $12 TM-261/461 2m or 440 MHz mobile, $12 TM-2570/2550/2530 2 m mobile, $15 TR-2400, 2 m HT, $12 Service manual for TR-2600, 2 m HT, $12 TR-9000, 2 m multimode, $12 TS-120 S/V, HF xcvr, $20 TW-4000 dual bander mobile, $15 Service manual for TW-4000 dual bander $20 TW-4100 dual band mobile, $15 BC-5 DC to DC quick charger $2 LF-30A Low Pass Filter $5 MC-30 & MC-35 hand microphones $4 MS-1 mobile stand $3 PB-1, PB-2, PB-3, & PB-4 battery packs $3 PB-24 battery pack for TR-2400 $2 PB-25 H battery pack for TR-2500 $2 PS-6 power supply $5 PS-30 power supply $4 SMC-24 speaker mic $3 SMC-25 speaker mic $3 SP-430 speaker $2 SP-820 Speaker $2 These are original Kenwood manuals only. Versi?n en espa?ol de Kenwood TM G-707 manual de Venta: Versi?n en espa?ol del Manual de Operaci?n para el Kenwood TM G-707 transmisor-receptor de banda dual Este es el manual de instrucciones original, en espa?ol. Parece que es bastante extensa y detallada. Es b?sicamente nuevo, s?lo se abre para observar que es s?lo en espa?ol. Es original de Kenwood. $ 8 m?s gastos de env?o de la Florida. Spanish Version of Kenwood TM G-707 manual: Spanish version of the Operating Manual for the Kenwood TM G-707 dual band transceiver This is the original operating manual only, in Spanish. It looks like it is quite extensive and detailed. It is basically new, only being opened to observe that it is in Spanish only. It is original from Kenwood. $8 I also have many other accessories available such as many different types of microphones, HTs, HF, VHF and UHF rigs, HF and VHF/UHF antennas, etc. Just too many to list here. Please e-mail your requests. Prices do not include shipping from Florida. Thanks. 73, Ken, W8EK Ken Simpson E-mail to W8EK at FLHam.net or W8EK at arrl.net Voice Phone (352) 732-8400 From w5jo at brightok.net Mon Aug 25 17:45:35 2014 From: w5jo at brightok.net (Jim Wilhite) Date: Mon, 25 Aug 2014 16:45:35 -0500 Subject: [AMRadio] Headphones Message-ID: <64BE141B415C4563BA7E7300B26ECB25@JimPC> I haven?t dinked with headphones since about 1958 until today. If you have the volume up too high when you plug them in, you can injure your hearing. And a set of cans will, over time, do the same. A good friend and fellow ham passed away and I am trying to help his widow sell what he had. I bet there were 10 sets of headphones and this afternoon I tried to pair them with any equipment so as to enhance the sale a bit. It was when I picked up a set made by (for) Telex that a label caught my eye. They had 8 ohms on the label so I looked at another pair made by another company and it said 16. What is the deal, are all manufacturers making headphones for audio and the audio builders making outputs the same as speakers? What ever happened to high impedance phones? Is this common? He had a Heil headset with mic so that makes me wonder the impedance of them. Can anyone explain. Jim W5JO From amradio at mailman.qth.net Mon Aug 25 18:11:48 2014 From: amradio at mailman.qth.net (Bill Guyger via AMRadio) Date: Mon, 25 Aug 2014 15:11:48 -0700 Subject: [AMRadio] Headphones In-Reply-To: <64BE141B415C4563BA7E7300B26ECB25@JimPC> References: <64BE141B415C4563BA7E7300B26ECB25@JimPC> Message-ID: <1409004708.48259.YahooMailNeo@web125301.mail.ne1.yahoo.com> I think the impedances?a lot of newer headsets are driven (pardon the pun) by what chips are in the radios, amps, etc. The headsets you see sportscasters wearing on TV are generally Sennheiser HMD-25's at about $450.00 a pop......I own 4 of them for doing sports originations for NBA, NHL, and MLB radio broadcasts. Mine all have Sennheiser's standard?600 Ohm drivers since my headphone amps can deliver serious power to the higher Z phones. An acquaintance has to use the same headsets with 80 Ohm drivers since his amps?are built around LM 386 chips operating?barefoot where as mine have current booster transistors or IC Current Drivers?driven by NE5534's. FWIW the reason the HMD-25's are the de facto standard is that they don't mess up the "talent's" hair since they're so light weight. Beyer 290's sound much better (at half the price)?but they're built like Panzer tanks. I use the Beyer cans?personally since they shut out the ambient noise and I can hear?what I'm mixing better and I don't care about headphone hair.? I'm pretty sure the ear buds you see the?youngsters destroying their hearing with (or at least isolating themselves from having to interact with those around them) are pretty high Z too.? Bill AD5OL On Monday, August 25, 2014 4:46 PM, Jim Wilhite wrote: I haven?t dinked with headphones since about 1958 until today.? If you have the volume up too high when you plug them in, you can injure your hearing.? And a set of cans will, over time, do the same.? A good friend and fellow ham passed away and I am trying to help his widow sell what he had.? I bet there were 10 sets of headphones and this afternoon I tried to pair them with any equipment so as to enhance the sale a bit. It was when I picked up a set made by (for) Telex that a label caught my eye.? They had 8 ohms on the label so I looked at another pair made by another company and it said 16.? What is the deal, are all manufacturers making headphones for audio and the audio builders making outputs the same as speakers?? What ever happened to high impedance phones? Is this common?? He had a Heil headset with mic so that makes me wonder the impedance of them. Can anyone explain. Jim W5JO ______________________________________________________________ Our Main Website: http://www.amfone.net/ AMRadio mailing list Archives: http://mailman.qth.net/pipermail/amradio/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: AMRadio at mailman.qth.net To unsubscribe, send an email to amradio-request at mailman.qth.net with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html From ne1s at securespeed.us Mon Aug 25 20:03:13 2014 From: ne1s at securespeed.us (ne1s at securespeed.us) Date: Mon, 25 Aug 2014 20:03:13 -0400 (EDT) Subject: [AMRadio] Headphones In-Reply-To: <64BE141B415C4563BA7E7300B26ECB25@JimPC> References: <64BE141B415C4563BA7E7300B26ECB25@JimPC> Message-ID: <9119618acaaabb705f918a10701d0733.squirrel@mail.myottmail.com> > It was when I picked up a set made by (for) Telex that a label caught my > eye. They had 8 ohms on the label so I looked at another pair made by > another company and it said 16. What is the deal, are all manufacturers > making headphones for audio and the audio builders making outputs the same > as speakers? What ever happened to high impedance phones? > > Is this common? He had a Heil headset with mic so that makes me wonder > the impedance of them. > > Can anyone explain. > Jim, Headphone impedances vary all over the place, both in a nominal sense, and in an actual sense. The impedances usually quoted are all nominal impedances - actual will be a (rather strong) function of audio frequency. "High impedance" headsets were the norm back in the days of crystal sets and regens, and the typical nominal impedance was 2000 ohms. They are less common today, although I hesitate to say "no longer manufactured" because I don't know that for a fact. Headphones with a nominal impedance of 600 ohms were common in and around the WWII timeframe for military applications. Really low impedance 'phones, such as 8-ohm nominal, I believe came about during the early days of high-fidelity. Bill Guyer provided a good comment about lower-Z 'phones being compatible with today's direct-coupled solid-state output chips and circuits, so that's what we encounter mostly today in consumer electronics, for example. From what I've seen nominal impedances ranging from 8 ohms to around 100 ohms are common. (BTW, I'm having good results driving a pair of such 'phones directly, i.e. without an impedance-matching transformer, from a 6V6 cathode follower - although the math says the impedance of the cathode follower is too high, I get adequate volume and great fidelity. The 'phones are coupled to the 6V6 cathode through a big electrolytic cap.) Since I'm not a broadcast or recording engineer I can't comment on what's standard today in broadcast or studio applications, but Bill touched on that. 73, -Larry/NE1S From ranchorobbo at gmail.com Mon Aug 25 20:57:19 2014 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Mon, 25 Aug 2014 19:57:19 -0500 Subject: [AMRadio] Headphones In-Reply-To: <64BE141B415C4563BA7E7300B26ECB25@JimPC> References: <64BE141B415C4563BA7E7300B26ECB25@JimPC> Message-ID: The cans seem to be kind of like mics in that they were high Z years ago and now they're low Z. By "years ago" I mean the days of ship to shore radiotelegraphy with commercial ops operating CW and wearing the headsets with crystal elements or some other type of transducer that was a few thousand ohms. they were worn in front of the ears; not over them. The modern headphones that cover the ear and are primarily made for high fidelity stereo are all made to match the modern audio gear so they are low Z, certainly under a few hundred ohms. More interesting but one of those no-fact/all opinion type issues is how, when, and why to use them. I have gotten to where I dislike wearing them, mostly because I have learned how to setup and use speakers for phone operating and in my opinion, once you have experienced a good sounding station on a great speaker driven by a receiver with a great audio section you'll never want to go back to headphones. But most hams these days who chase DX, operate contests, and SSB wouldn't think of not using them. I think the reason partly has to do with them not knowing what speaker works best for ham radio. I made the mistake of doing what any modern day audio guy would probably do--I picked up a pair of like new, large JBL three way speakers at a garage sale and used them. For a stereo they were probably great but for short wave AM radio they were not good. It turned out that for short wave radio with a vintage receiver, nothing beat a good old 8 ohm full range 12 inch speaker in a large wood bass reflex cabinet. Only time I use headphones now is when I want to carefully listen to my own transmit audio, and when I have to copy a weak signal, usually on 160 m. or when I operate CW. 73 Rob K5UJ On Mon, Aug 25, 2014 at 4:45 PM, Jim Wilhite wrote: > I haven't dinked with headphones since about 1958 until today. If you have the volume up too high when you plug them in, you can injure your hearing. And a set of cans will, over time, do the same. A good friend and fellow ham passed away and I am trying to help his widow sell what he had. I bet there were 10 sets of headphones and this afternoon I tried to pair them with any equipment so as to enhance the sale a bit. > > It was when I picked up a set made by (for) Telex that a label caught my eye. They had 8 ohms on the label so I looked at another pair made by another company and it said 16. What is the deal, are all manufacturers making headphones for audio and the audio builders making outputs the same as speakers? What ever happened to high impedance phones? > > Is this common? He had a Heil headset with mic so that makes me wonder the impedance of them. > > Can anyone explain. From kt4ae at bellsouth.net Mon Aug 25 21:16:00 2014 From: kt4ae at bellsouth.net (Harry Vaught, KT4AE) Date: Mon, 25 Aug 2014 21:16:00 -0400 Subject: [AMRadio] Headphones In-Reply-To: <9119618acaaabb705f918a10701d0733.squirrel@mail.myottmail.com> References: <64BE141B415C4563BA7E7300B26ECB25@JimPC> <9119618acaaabb705f918a10701d0733.squirrel@mail.myottmail.com> Message-ID: <53FBDFD0.9080705@bellsouth.net> I'm going to generalize, based on a small number of personal observations, that modern rigs have 8-16 ohm headphone outputs (TS-590, for instance) versus the higher stated impedances of vintage rigs. Interestingly, My later Hallicrafters have the headphone output taken from the 3.2 ohm tap of the output transformer while stating a 50-2000 impedance for headphones. I have a number of headphones which I use with ham gear, stereo or computers. Most are 8 ohms and one is 260. My only communication headphones are Kenwood HS-5's at 8 ohms. It doesn't seem to matter what I plug into what except the Kenwoods are mono and the stereo phones need mono adapters for communication use. For amateur radio, I use headphones all the time for a couple of reasons, chief among them is that I'm old and losing my hearing. The isolation of headphones helps concentration and prevents distraction. They also let my wife know not to interrupt. Harry, KT4AE Watkinsville, Georgia From w5jo at brightok.net Tue Aug 26 09:30:06 2014 From: w5jo at brightok.net (Jim Wilhite) Date: Tue, 26 Aug 2014 08:30:06 -0500 Subject: [AMRadio] Headphones In-Reply-To: <53FBDFD0.9080705@bellsouth.net> References: <64BE141B415C4563BA7E7300B26ECB25@JimPC><9119618acaaabb705f918a10701d0733.squirrel@mail.myottmail.com> <53FBDFD0.9080705@bellsouth.net> Message-ID: Thanks guys for the explanation on the headphone deal. This seems to be nothing more than the march of technology. I am just glad it is electronic technology rather than that of mussed hair. I noticed some of the football coaches are wearing headphones with the Motorola bat wings on them but they are great big cans that look they are made to reduce the noise on the field. I didn't know Motorola made such a thing, but then again I didn't know Motorola made consumer GPS units until I bought one sometime back. It wasn't up to standards compared to Motorola standards of years back. When the inside of my car heated up the touch screen on the GPS quit working. Jim W5JO From amradio at mailman.qth.net Tue Aug 26 10:02:51 2014 From: amradio at mailman.qth.net (Bill Guyger via AMRadio) Date: Tue, 26 Aug 2014 09:02:51 -0500 Subject: [AMRadio] Headphones In-Reply-To: References: <64BE141B415C4563BA7E7300B26ECB25@JimPC> <9119618acaaabb705f918a10701d0733.squirrel@mail.myottmail.com> <53FBDFD0.9080705@bellsouth.net> Message-ID: <38ED04A0-F870-4D27-99B6-7458EFA2BB4A@yahoo.com> The Motorola headsets coaches are wearing are part of a Motorola wireless intercom system. When the system was first introduced to the NFL the thing operated in the 450 and / or 455 MHz broadcast RPU bands. Needless to say that caused a flap with broadcasters not being able to use legally assigned frequencies at sporting events. There were more than a few broadcast frequency coordinators that said FU and walked out.... Bill AD5OL Sent from my iPhone > On Aug 26, 2014, at 8:30 AM, "Jim Wilhite" wrote: > > > Thanks guys for the explanation on the headphone deal. This seems to be nothing more than the march of technology. I am just glad it is electronic technology rather than that of mussed hair. > > I noticed some of the football coaches are wearing headphones with the Motorola bat wings on them but they are great big cans that look they are made to reduce the noise on the field. I didn't know Motorola made such a thing, but then again I didn't know Motorola made consumer GPS units until I bought one sometime back. It wasn't up to standards compared to Motorola standards of years back. When the inside of my car heated up the touch screen on the GPS quit working. > > Jim > W5JO > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Archives: http://mailman.qth.net/pipermail/amradio/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: AMRadio at mailman.qth.net > To unsubscribe, send an email to amradio-request at mailman.qth.net with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From amradio at mailman.qth.net Tue Aug 26 21:16:01 2014 From: amradio at mailman.qth.net (CL in NC via AMRadio) Date: Tue, 26 Aug 2014 18:16:01 -0700 Subject: [AMRadio] Meissner coil info Message-ID: <1409102161.3556.YahooMailBasic@web160605.mail.bf1.yahoo.com> A couple years ago, I think somebody posted winding data for Meissner Signal Shifter coils here.? Does somebody have that info available for the 1941 Deluxe? Charlie, W4MEC in NC From w4wsz at embarqmail.com Wed Aug 27 20:51:30 2014 From: w4wsz at embarqmail.com (Bob) Date: Wed, 27 Aug 2014 20:51:30 -0400 Subject: [AMRadio] Ceramic Capacitors Message-ID: <004d01cfc25a$353c1950$9fb44bf0$@embarqmail.com> I have an assortment of these caps..most are new... just old....one is new in the box. 500 pf/20kv New in Box (2) 25 mmf type 850S 50 pf/7.5kv 500 mmf/10kv .001 mfd/10kv 500 mmf/20kv 375 pf/30kv Plus 6 or 8 that the value has worn off due to age. I would like to sell all of them at a fair price (not the e-bay) price. If you can use these, send me an e-mail......I am sure we can make a deal that make us both happy. Thanks, Bob,W4WSZ w4wsz at embarqmail.com From randyn3lrx at gmail.com Sat Aug 30 00:45:45 2014 From: randyn3lrx at gmail.com (Randall Berry) Date: Sat, 30 Aug 2014 00:45:45 -0400 Subject: [AMRadio] WANTED: 274 Ohm Resistor Message-ID: <540156F9.60003@gmail.com> This may be slightly off topic I guess, but does anyone have a 274 ohm resistor or in their stash willing to drop one in an envelope? I see some on ebay but I don't need 100 of them and don't really need 2 or 3 watts, but I'll take it if that's all you have. Ideally 1/4-1/2 will suit fine. I'll gladly pay a few bucks for your troubles. Address is good on qrz. Please contact me first and let me know so I can update this thread. I'd hate to have a dozen people blindly sending me resistors. tnx es 73 de Randy, N3LRX From randyn3lrx at gmail.com Sat Aug 30 08:08:18 2014 From: randyn3lrx at gmail.com (Randall Berry) Date: Sat, 30 Aug 2014 08:08:18 -0400 Subject: [AMRadio] [Boatanchors] WANTED: 274 Ohm Resistor In-Reply-To: References: <540156F9.60003@gmail.com> Message-ID: <5401BEB2.5060207@gmail.com> Hi Brian, I bought a Sark100 antenna analyzer, It uses a 50, a 150, and a 274 ohm resistors to calibrate it in 3 stages. I've got the 50 (48.9), (2 100's parallel) and the 150 (148.7), both at 5%, (Plus my meters margin of error, at .1 ohm shorted) I just need the 274. Not sure how close tolerance it's looking for. I guess I could try a 270 5% it can't hurt. Rat Shack has a card of 5 at 5% for a buck fitty. A bit more than forty cents but Rat Shack is all I've got for local parts. I guess there's nothing stopping me from bringing in my VOMit and testing in the store for the closest. Thanks, Randy, N3LRX On 08/30/2014 04:43 AM, Brian Clarke wrote: > Hello Randy, > > Buy a strip of 10off 270 Ohm, 0.25 W resistors, 10% tolerance. Should > cost all of 40c total. Measure them all on a good Ohmmeter - you should > find at least one that is close to 274 Ohm. After all, 274 is only 1.5% > away from 270. (Statistically, you have better than 30% likelihood of > finding at least one that is close to 274 Ohm) > > More seriously, I would question why you can't just use a 270 Ohm > resistor anyway. > > 73 de Brian, VK2GCE. > > On : [Boatanchors] WANTED: 274 Ohm Resistor, you said: > > >> This may be slightly off topic I guess, but does anyone have a 274 ohm >> resistor or in their stash willing to drop one in an envelope? I see >> some on ebay but I don't need 100 of them and don't really need 2 or 3 >> watts, but I'll take it if that's all you have. Ideally 1/4-1/2 will >> suit fine. I'll gladly pay a few bucks for your troubles. >> >> Address is good on qrz. Please contact me first and let me know so I can >> update this thread. I'd hate to have a dozen people blindly sending me >> resistors. >> >> tnx es 73 de Randy, N3LRX > From wa1rkt at comcast.net Sat Aug 30 08:28:21 2014 From: wa1rkt at comcast.net (Rick Poole WA1RKT) Date: Sat, 30 Aug 2014 12:28:21 +0000 (UTC) Subject: [AMRadio] [Boatanchors] WANTED: 274 Ohm Resistor In-Reply-To: <5401BEB2.5060207@gmail.com> References: <540156F9.60003@gmail.com> <5401BEB2.5060207@gmail.com> Message-ID: <854774677.4285413.1409401701406.JavaMail.root@comcast.net> One thing to consider... if you need a precision 274-ohm resistor that probably also means you need it to be stable over temperature. 5% and 10% resistors, even if you find one that measures at 274 ohms, are unlikely to maintain that value very closely over a wide temperature range. Rick WA1RKT On 08/30/2014 04:43 AM, Brian Clarke wrote: > Hello Randy, > > Buy a strip of 10off 270 Ohm, 0.25 W resistors, 10% tolerance. Should > cost all of 40c total. Measure them all on a good Ohmmeter - you should > find at least one that is close to 274 Ohm. After all, 274 is only 1.5% > away from 270. (Statistically, you have better than 30% likelihood of > finding at least one that is close to 274 Ohm) > > More seriously, I would question why you can't just use a 270 Ohm > resistor anyway. > > 73 de Brian, VK2GCE.

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