From qedconsultants at embarqmail.com Wed Sep 2 18:20:20 2015 From: qedconsultants at embarqmail.com (Bernie Doran) Date: Wed, 2 Sep 2015 18:20:20 -0400 Subject: [AMRadio] FT5000 for sale Message-ID: <11EEF5A40B2C49C0B73335B4A2D5837C@berniePC> I have a new FT5000, as in never used, still in the original factory plastic sealed wrap. I do not need or want it. I will part with it for $4,600 shipping free CONUS, or deliver anywhere in Ohio. verifiable bank draft or cash. That is about $1,000 less than I paid for it. Bernie W8RPW From w5jo at brightok.net Fri Sep 4 17:31:46 2015 From: w5jo at brightok.net (w5jo at brightok.net) Date: Fri, 4 Sep 2015 16:31:46 -0500 Subject: [AMRadio] I am looking! Message-ID: <4263E8AC180F45329D117C06AA57104B@JimPC> I am in need of a small 100 Kc crystal calibrator. Any brand, Heath, Knight, National, etc. will do so long as it is small and has a 8 pin octal plug on it and works. Does anyone have an example that is not used and will sell? Jim W5JO From ars.w5omr at gmail.com Fri Sep 4 19:04:41 2015 From: ars.w5omr at gmail.com (Geoff) Date: Fri, 4 Sep 2015 18:04:41 -0500 Subject: [AMRadio] Modulation transformer Message-ID: <55EA2389.8040408@gmail.com> I am in search of ... We've recently moved and a 'casualty' has been my good ol' venerable RCA 5,500 ohm 1:1 modulation transformer. It appears the mod iron was tipped over on it's side and broke the bakelite that holds the terminals on the primary. What I'd -really- like is an intact piece to replace the one broken. I'm thinking I can probably just un-do those fasteners and fashion some sort of fire-proof lexan and replace it. Any thoughts on this subject from the consortium? 73 = Best Regards, -Geoff/W5OMR From ars.w5omr at gmail.com Fri Sep 4 19:23:57 2015 From: ars.w5omr at gmail.com (Geoff) Date: Fri, 4 Sep 2015 18:23:57 -0500 Subject: [AMRadio] Modulation transformer In-Reply-To: <1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> References: <55EA2389.8040408@gmail.com> <1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> Message-ID: <55EA280D.2090207@gmail.com> On 09/04/2015 06:20 PM, Mel Farrer wrote: > Yes, Geoff, > > Did the same thing to my Bauer 707 HV transformer in transit. It > took out the secondary strip and the HV resistor support. Redid it > with the pieces layout in 1/4" lexan clear and it worked fine, Just a > lot of hand labor. > That's what I'm thinking is going to be the most expiditius, Mel ... fortunately, I'm in in a hurry for it. The Titanic -will- rise! (again) P-P link coupled 250TH's modulated by p-p class B 250TH's. -Geoff/W5OMR From w5jo at brightok.net Fri Sep 4 19:58:20 2015 From: w5jo at brightok.net (w5jo at brightok.net) Date: Fri, 4 Sep 2015 18:58:20 -0500 Subject: [AMRadio] Modulation transformer In-Reply-To: <55EA280D.2090207@gmail.com> References: <55EA2389.8040408@gmail.com><1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> <55EA280D.2090207@gmail.com> Message-ID: <71578A45DE9D426AA74669C765A755DA@JimPC> I recall a discussion about those transformers in years past. It seems as if several people acquired one and wanted to know what to do with them. It is not a common impedance so maybe there are some out there who occupies space and not using them. Keep your finger crossed. Jim W5JO -----Original Message----- On 09/04/2015 06:20 PM, Mel Farrer wrote: > Yes, Geoff, > > Did the same thing to my Bauer 707 HV transformer in transit. It > took out the secondary strip and the HV resistor support. Redid it > with the pieces layout in 1/4" lexan clear and it worked fine, Just a > lot of hand labor. > That's what I'm thinking is going to be the most expiditius, Mel ... fortunately, I'm in in a hurry for it. The Titanic -will- rise! (again) P-P link coupled 250TH's modulated by p-p class B 250TH's. -Geoff/W5OMR Please help support this email list: http://www.qsl.net/donate.html Message delivered to w5jo at brightok.net From ranchorobbo at gmail.com Fri Sep 4 20:41:01 2015 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Fri, 4 Sep 2015 19:41:01 -0500 Subject: [AMRadio] Modulation transformer In-Reply-To: <71578A45DE9D426AA74669C765A755DA@JimPC> References: <55EA2389.8040408@gmail.com> <1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> <55EA280D.2090207@gmail.com> <71578A45DE9D426AA74669C765A755DA@JimPC> Message-ID: Is this the Liberty Ship modulated CW iron that's being discussed? Rob K5UJ On Fri, Sep 4, 2015 at 6:58 PM, wrote: > I recall a discussion about those transformers in years past. It seems as > if several people acquired one and wanted to know what to do with them. > > It is not a common impedance so maybe there are some out there who occupies > space and not using them. Keep your finger crossed. > > Jim > W5JO From ars.w5omr at gmail.com Sat Sep 5 01:35:30 2015 From: ars.w5omr at gmail.com (Geoff) Date: Sat, 5 Sep 2015 00:35:30 -0500 Subject: [AMRadio] Modulation transformer In-Reply-To: References: <55EA2389.8040408@gmail.com> <1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> <55EA280D.2090207@gmail.com> <71578A45DE9D426AA74669C765A755DA@JimPC> Message-ID: <55EA7F22.8020603@gmail.com> On 09/04/2015 07:41 PM, Rob Atkinson wrote: > Is this the Liberty Ship modulated CW iron that's being discussed? > I'm pretty sure it is, Rob. Electrical dimensions aside, it's the physical side of it that needs repair. I know that transformer well. Otis/K5SWK used to run one with his 833's. I use a 60HY @600mA choke as a reactor to keep the DC off of the secondary. From ranchorobbo at gmail.com Sat Sep 5 06:47:28 2015 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Sat, 5 Sep 2015 05:47:28 -0500 Subject: [AMRadio] Modulation transformer In-Reply-To: <55EA7F22.8020603@gmail.com> References: <55EA2389.8040408@gmail.com> <1527798079.1924509.1441408803452.JavaMail.yahoo@mail.yahoo.com> <55EA280D.2090207@gmail.com> <71578A45DE9D426AA74669C765A755DA@JimPC> <55EA7F22.8020603@gmail.com> Message-ID: I think you can probably glue the bakelite back together with the 2 ton clear epoxy. that epoxy seems to have great insulation properties. I have used it to glue porcelain. Unless I am mistaken that transformer has a tertiary winding but I don't know the turns or impedance ratio. the rig it was intended for must have had a screen grid. I am told those transformers were pretty easy to find at hamfests in the past. Like a lot of good things such as real FT243 crystals they are hard to find now. I bet using that 60 Hy reactor improves the frequency response of that transformer and its power handling. I think it was gapped for B+ through the secondary. 73 Rob K5UJ On Sat, Sep 5, 2015 at 12:35 AM, Geoff wrote: > > > On 09/04/2015 07:41 PM, Rob Atkinson wrote: >> Is this the Liberty Ship modulated CW iron that's being discussed? >> > > I'm pretty sure it is, Rob. Electrical dimensions aside, it's the > physical side of it that needs repair. > > I know that transformer well. Otis/K5SWK used to run one with his 833's. > > I use a 60HY @600mA choke as a reactor to keep the DC off of the secondary. From k4kyv at charter.net Fri Sep 11 14:34:59 2015 From: k4kyv at charter.net (Donald Chester) Date: Fri, 11 Sep 2015 13:34:59 -0500 Subject: [AMRadio] Comments to FCC needed ASAP, regarding Fish Net Beacons in 1900-2000 kHz Message-ID: <001201d0ecc0$90dc3150$b29493f0$@charter.net> Here's an item from the FCC that needs our attention, since 160m is one of the bands most widely used by the AM community. While most attention so far has focussed on the proposed new MF and LF allocations, there is also the issue of fish net beacons on 160m. The initial comment deadline is past due, but REPLY COMMENTS ARE STILL OPEN THROUGH THE 30th of SEPTEMBER. We can reply to the ARRL comments; they pretty much have the issue identified and defined spot on, except for a suggestion that fish net beacons on 1900-2000 kHz be moved to the "lightly used" portion of the Radiolocation frequencies between the broadcast band and 160m ham band, specifically 1750-1800 kHz. From what I hear on my receiver at this location, THE ENTIRE SEGMENT OF FREQUENCIES between 1705 kHz and 1800 kHz is lightly used. I rarely ever hear a signal of any kind in that segment, which was once packed full of now-discontinued radiolocation beacons. I would strongly urge everyone to submit a reply comment explaining why you support the ARRL position, with a further suggestion that the entire band of Radiolocation frequencies between 1705 and 1800 kHz be considered to re-accommodate beacons presently on 1900-2000. I am not familiar with the beacon transmitters except for a few online ads for the products, but I suspect it would be very easy to move the transmit frequency, requiring only re-setting a synthesised master oscillator and tweaking the antenna tuning network. A technician could probably complete the task in less than 10 minutes. The beacons would suffer far less interference operating in the now-vacant Radiolocation spectrum, than in the heavily used amateur band. Even though they operate at low transmitting power, amateurs, particularly those living in coastal areas, frequently complain of interference. Likewise, signals from high power amateur transmitters are undoubtedly capable of causing harmful interference to the beacons. When the FCC released the Report & Order upgrading amateur status to primary, it wasn't immediately clear that this included a new docket proposal (15-99) with a subsequent comment deadline. It is unusual for the FCC to combine a R&O for one proceeding with a new Notice of Proposed Rulemaking all in the same release, so this did not come to the attention of most amateurs until a recent news item appeared on the ARRL website. Some useful links: Here, you see a list of links to recent comments, plus a link to the text of the original FCC Release in the right-hand pane. If you wish to submit a (reply) comment, click on "Submit a Filing in 15-99", which is located at the top of the page just above the main heading. http://apps.fcc.gov/ecfs/proceeding/view?name=15-99 Here is the entire FCC Docket, which is very lengthy. The pertinent section addressing the 1900-2000 kHz issue begins with paragraph 30. http://apps.fcc.gov/ecfs/comment/view?id=60001030137 Here are the ARRL's submitted comments. The 160m issue is addressed in Section II, beginning on page 4 and running through page 11. http://apps.fcc.gov/ecfs/comment/view?id=60001198635 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From rbethman at comcast.net Fri Sep 11 17:36:33 2015 From: rbethman at comcast.net (rbethman) Date: Fri, 11 Sep 2015 17:36:33 -0400 Subject: [AMRadio] FAA even worse! In-Reply-To: <001201d0ecc0$90dc3150$b29493f0$@charter.net> References: <001201d0ecc0$90dc3150$b29493f0$@charter.net> Message-ID: <55F34961.1090901@comcast.net> I just traded the remaining telescope and high end ($) Eyepieces for what "can" easily qualify as a drone. Stumbled upon what the FAA has defined as MY No Fly Zone. I have followed the trail and located an *Internal* Memorandum from 2011. I can still operate in this "No Fly Zone", under the exemption they have in this *Internal* Memorandum. I can fly this as a recreational model, it is under 55lbs, and I fly strictly line of site and do NOT program the flights. Oh how wonderful to have to go DIG to locate an Internal Memorandum! This happens to be a DJI Phantom 2 Vision+. They go for over $1300! I would not have gone out and bought one. The gentleman offered to do some trading. The first thing he offered was a significantly larger Telescope than the one I gave to our granddaughter. I had to say no, due to the darn arthritis. Then we arranged a phone call. The next item offered was an assault rifle. Now I know the XYL won't go for that! So I explained it to him. Then he offers the Phantom in a straight across the board trade. This I could do and stay out of dog house. We arranged a time and day, I took over what he was wanting as bad as I was wanting a Phantom. I took it all out of the carrying case. I had him slip just one of those Eyepieces in and go outside and see for himself. Bit hook line and sinker! I was already that way before I got there. Now we are both very happy. Now I just ensure I stay in the Exemption rules! Regards, Bob - N0DGN From rbethman at comcast.net Fri Sep 11 23:18:36 2015 From: rbethman at comcast.net (rbethman) Date: Fri, 11 Sep 2015 23:18:36 -0400 Subject: [AMRadio] Tucked my comment in to 55-19 Message-ID: <55F3998C.4060200@comcast.net> Folks, Tucked my comment in as an addition to 55-19. I at least got my two cents in. It is beginning to look more like snake oil sales coming down the street. Regards, Bob - N0DGN From amradio at mailman.qth.net Fri Sep 11 23:24:23 2015 From: amradio at mailman.qth.net (CL in NC via AMRadio) Date: Fri, 11 Sep 2015 20:24:23 -0700 Subject: [AMRadio] No vernier? Message-ID: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> Did Heath really build the AR3 without a vernier drive? Or is the one on the junker I picked up stuck? The capacitor shaft looks like it may be one of those mystery verniers I've seen where the smaller diameter shaft goes into the larger one and magically gives a reduction. I held the larger shaft shaft with pliers and tried the smaller and it did move, but not convinced it is supposed to. Anybody know? Also, does anybody make plain communication grade metal frame, paper cone speakers in the 4, 5, and 6 inch range anymore? Charlie, W4MEC in NC From ranchorobbo at gmail.com Sat Sep 12 05:35:49 2015 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Sat, 12 Sep 2015 04:35:49 -0500 Subject: [AMRadio] No vernier? In-Reply-To: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> References: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> Message-ID: On Fri, Sep 11, 2015 at 10:24 PM, CL in NC via AMRadio wrote: > > Also, does anybody make plain communication grade metal frame, paper cone speakers in the 4, 5, and 6 inch range anymore? > In terms of speakers I am not sure what you mean by "communication grade." You can still get common permanent magnet full range speakers. but you may balk at what they cost. Well, in the smaller sizes they may not be too expensive. Here is a sample of 8 ohm speakers from Allied Electronics: http://www.alliedelec.com/audio/speakers/?navigation=4294834613 I have always simply gone to hamfests. If you find what you want and they almost give them away because most hams aren't looking for speakers. 73 Rob K5UJ From amradio at mailman.qth.net Sat Sep 12 10:42:45 2015 From: amradio at mailman.qth.net (W2EMN via AMRadio) Date: Sat, 12 Sep 2015 10:42:45 -0400 Subject: [AMRadio] No vernier? In-Reply-To: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> References: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> Message-ID: <14fc2022690-34ad-31ac8@webprd-a108.mail.aol.com> My AR-3 takes 3 turns of the knob end-to-end, so it's a vernier. It's in the cabinet so I can't provide more details. I do recall that I spent a lot of time getting the stickiness out of the main tuning cap, so that may be your problem. Or, someone could have substituted a different cap to solve the stickiness problem. I thought it was a great radio when I was 15, now the one I have is a nice memento of times gone by. I'd try eBay for the speaker, I've gotten a 10" on there. Ed W2EMN -----Original Message----- From: CL in NC via AMRadio To: amradio Sent: Fri, Sep 11, 2015 11:25 pm Subject: [AMRadio] No vernier? Did Heath really build the AR3 without a vernier drive? Or is the one on the junker I picked up stuck? The capacitor shaft looks like it may be one of those mystery verniers I've seen where the smaller diameter shaft goes into the larger one and magically gives a reduction. I held the larger shaft shaft with pliers and tried the smaller and it did move, but not convinced it is supposed to. Anybody know? Also, does anybody make plain communication grade metal frame, paper cone speakers in the 4, 5, and 6 inch range anymore? Charlie, W4MEC in NC ______________________________________________________________ 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 Message delivered to djed1 at aol.com From nq5t at tx.rr.com Sat Sep 12 10:59:55 2015 From: nq5t at tx.rr.com (GRANT YOUNGMAN) Date: Sat, 12 Sep 2015 09:59:55 -0500 Subject: [AMRadio] No vernier? In-Reply-To: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> References: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> Message-ID: Yes, the band spread knob on the AR-3 is a vernier. Grant NQ5T > On Sep 11, 2015, at 10:24 PM, CL in NC via AMRadio wrote: > > Did Heath really build the AR3 without a vernier drive? Or is the one on the junker I picked up stuck? The capacitor shaft looks like it may be one of those mystery verniers I've seen where the smaller diameter shaft goes into the larger one and magically gives a reduction. I held the larger shaft shaft with pliers and tried the smaller and it did move, but not convinced it is supposed to. Anybody know? > From ne1s at securespeed.us Sat Sep 12 17:55:57 2015 From: ne1s at securespeed.us (Larry Szendrei) Date: Sat, 12 Sep 2015 17:55:57 -0400 Subject: [AMRadio] No vernier? In-Reply-To: References: <1442028263.89033.YahooMailBasic@web160605.mail.bf1.yahoo.com> Message-ID: <55F49F6D.5080903@securespeed.us> On 9/12/15 5:35 AM, Rob Atkinson wrote: > I have always simply gone to hamfests. If you find what you want and > they almost give them away because most hams aren't looking for > speakers. 73 Rob K5UJ I was just at a hamfest this morning and there was a guy there with all sorts of metal-framed, non-high-fidelity speakers for 25 cents each. If I need a small speaker I usually go for an automotive one because the sound quality is better, and I can usually find them for free at the local dump - err, recycling center. 73, -Larry/NE1S From qedconsultants at embarqmail.com Sun Sep 13 17:04:45 2015 From: qedconsultants at embarqmail.com (Bernie Doran) Date: Sun, 13 Sep 2015 17:04:45 -0400 Subject: [AMRadio] Strange/funny things Message-ID: <1EED4BF553DE432B8E63521B510E30D0@berniePC> Been listening a lot on forty and have heard some different things. The weird one is a rhythmic change in the background noise level at a rate of about 40 per minute and about 3 db. Been hearing this for months, no correlation with time or day, appears to be ongoing for hours if not days, A few days ago it stopped while I was listening. No idea what it might b, rx has been ruled out. Then I heard perfect Morse being sent but the spacing sort of varied, finally realized it was computer generated and there was a hunt and peck, like me, there. Heard another calling cq. made out the cq and the de only because of the rhythm. there was no spacing between letters or letter groups. just continuous dots and dashes! The neat one was a gentleman with a bit of chirp produced by keying the osc. It was actually refreshing. reminded me of the 50s. Then this one, I am convinced that the Jap transceivers sound a tiny bit different on CW than the old class C rigs. I do not know how to describe but perhaps soft Vs crisp. Anyone else think they hear this? not many class C running so it is hard to compare. And last, a SSB op describing his Fox Tango 1000 running 200 Whisky. Maybe I should listen less!! Bernie W8RPW From k7dfw at clatskanie.com Mon Sep 14 21:29:19 2015 From: k7dfw at clatskanie.com (RF PRECHTL K7DFW) Date: Mon, 14 Sep 2015 18:29:19 -0700 Subject: [AMRadio] B&W Collins Drake EFJ Heathkit BC-610 BC-348 -- all for pickup NW Oregon References: <001201ce78d5$9f522110$ddf66330$@charter.net> Message-ID: <003d01d0ef55$f67ead20$5808490c@hppav> Have lost interest and need the space. These are not recent purchases, are currently connected to power and antenna, and have been used for the last 20 to 30 years for QSOs. KWM-2 $400 KWM-2 $400 Viking II $200 R-392 $300 BC-348Q-AC supply-shock mount $200 B&W 5100 $300 DX-100B $200 SB-10 $75 SB-10 $75 Heathkit TX-1 Apache $200 BC-610F David Bogen $300 BC-610G Hallicrafters $300 These are unchecked. Pair of DX-100 parts units both $150 B&W 51SB $100 Drake 2-B $100 Pickup my QTH NW Oregon near Rainier and Clatskanie. Take all for $2500. Rolynn Clatskanie, OR From amradio at mailman.qth.net Mon Sep 14 23:35:45 2015 From: amradio at mailman.qth.net (CL in NC via AMRadio) Date: Mon, 14 Sep 2015 20:35:45 -0700 Subject: [AMRadio] Spaceless CW Message-ID: <1442288145.46857.YahooMailBasic@web160606.mail.bf1.yahoo.com> Bernie, your comment: "Heard another calling cq. made out the cq and the de only because of the rhythm. there was no spacing between letters or letter groups. just continuous dots and dashes!" Maybe this guys dad perhaps, answered my CQ back in the early 70's. I told him I was unable to copy his CW and his next transmission he discovered spacing and only sent 'LID'. The only reason I remember that is, like you said, his code was nothing more than spaceless dits and dahs, and his comment on my receiving ability. I know it is a new world in this hobby, but somebody attempting to break in in using 'Contact' bugs the heck out of me, and I don't mean Vibroplex. Charlie, W4MEC in NC From knjhanlon at msn.com Tue Sep 15 12:19:33 2015 From: knjhanlon at msn.com (JAMES HANLON) Date: Tue, 15 Sep 2015 10:19:33 -0600 Subject: [AMRadio] Speaker Source Message-ID: For decent, not terribly expensive speakers, have a look at Antique Electronic Supply's list at www.tubesandmore.com/ . I just went to their home page, clicked on Speakers, and sorted the list by price from low to high. The first two speakers that came up were: Part number P-A600, 4" squasre frame, 8 ohm, for $5.95; Part number P-A-Mod6-15, Jensen 6", 15 watts, for $17.40. Jim Hanlon, W8KGI From w5jo at brightok.net Tue Sep 15 15:00:27 2015 From: w5jo at brightok.net (w5jo at brightok.net) Date: Tue, 15 Sep 2015 14:00:27 -0500 Subject: [AMRadio] SP 600 question Message-ID: <69C029578A394B9DA90F0F9CCCEEE4AB@JimPC> I wonder about the first RF amp. tube in this receiver. What I would like to know is what the value of the screen resistor is in the 1st. RF and the value of the resistor in the plate lead, if any. Also the recommended voltages on the plate and screen of that tube. Jim W5JO From rbethman at comcast.net Tue Sep 15 15:10:40 2015 From: rbethman at comcast.net (rbethman) Date: Tue, 15 Sep 2015 15:10:40 -0400 Subject: [AMRadio] SP 600 question In-Reply-To: <69C029578A394B9DA90F0F9CCCEEE4AB@JimPC> References: <69C029578A394B9DA90F0F9CCCEEE4AB@JimPC> Message-ID: <55F86D30.7000909@comcast.net> On 9/15/2015 3:00 PM, w5jo at brightok.net wrote: > I wonder about the first RF amp. tube in this receiver. What I would > like to know is what the value of the screen resistor is in the 1st. > RF and the value of the resistor in the plate lead, if any. Also the > recommended voltages on the plate and screen of that tube. > > Jim > W5JO Jim, These are for the Northern Radio SP-600 J [No X] Screen Resistor R3 - 33k R4 - 1k Plate has an L7 - 192uH R5 - 510 R6 - 1k Regards, Bob - N0DGN From w5jo at brightok.net Tue Sep 15 15:13:13 2015 From: w5jo at brightok.net (w5jo at brightok.net) Date: Tue, 15 Sep 2015 14:13:13 -0500 Subject: [AMRadio] SP 600 question In-Reply-To: <55F86D30.7000909@comcast.net> References: <69C029578A394B9DA90F0F9CCCEEE4AB@JimPC> <55F86D30.7000909@comcast.net> Message-ID: Thanks Bob! Jim -----Original Message----- On 9/15/2015 3:00 PM, w5jo at brightok.net wrote: > I wonder about the first RF amp. tube in this receiver. What I would > like to know is what the value of the screen resistor is in the 1st. > RF and the value of the resistor in the plate lead, if any. Also the > recommended voltages on the plate and screen of that tube. > > Jim > W5JO Jim, These are for the Northern Radio SP-600 J [No X] Screen Resistor R3 - 33k R4 - 1k Plate has an L7 - 192uH R5 - 510 R6 - 1k Regards, Bob - N0DGN From w5jo at brightok.net Sat Sep 19 11:58:18 2015 From: w5jo at brightok.net (w5jo at brightok.net) Date: Sat, 19 Sep 2015 10:58:18 -0500 Subject: [AMRadio] RCA Senior voltohmyst Probe Message-ID: <6B3E3A29A8A249E2843B4E7115F31FC1@JimPC> Is there anyone about who knows how to disassemble the WG410A probe that accompanied this VTVM? I have one that is bad no matter which way the switch is set. The problem may be the switch, but if it isn't I would like to repair the probe. Jim W5JO From ranchorobbo at gmail.com Sun Sep 20 08:09:05 2015 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Sun, 20 Sep 2015 07:09:05 -0500 Subject: [AMRadio] Fwd: AM Tailgate: Oct. 31 - Nov. 1 Message-ID: I have permission to forward this... Rob K5UJ ---------- Forwarded message ---------- Announcing the 2015 "AM Tailgate", a QSO party for AM operators. 0000 UTC October 31 to 0000 UTC November 1, 2015. http://www.qsl.net/potomacam/amtailgate.htm Purpose: Make enjoyable AM QSOs, renew old acquaintances, meet new friends, welcome newcomers to AM. Bands: 160, 80, 40, 20, 15, 10, 6 & 2 meters. Suggested calling frequencies (MHz): 1.880-1.885; 3.705, 3.740, 3.870-3.885; 7.285-7.295; 14.330; 21.420; 29.000-29.200; 50.420; 144.270 Sponsored by Potomac AM Group. Full details, log & summary sheets at http://www.qsl.net/potomacam/amtailgate.htm Please spread the word among your AM friends! 73, Brad K4RT From rbethman at comcast.net Tue Sep 22 12:10:02 2015 From: rbethman at comcast.net (rbethman) Date: Tue, 22 Sep 2015 12:10:02 -0400 Subject: [AMRadio] LED Magnifying Lamp by Duratool Message-ID: <56017D5A.9080309@comcast.net> Bought this. I like the brightness & the magnifying glass. The lid for the glass is a nice touch. It keeps the glass clean & protects it. It even has a section of the Magnifying glass that works like a bifocal. It really is bright! It has 60 LEDs in a ring under the top, around the magnifying glass. It is great! Then as I found on another review on a different Emporium's Site: "But unfortunately, when the light is on, it gives off a fair bit of RF hash that can be heard in a radio. I added a 0.022uF 630V cap at the output terminals to the LEDs and that quieted it down a bit. I wish that the people that spec out these designs would pay more attention to spurious RF that some power supplies cause." I took it apart when it got here. The power supply is in the base. I went with a bigger value cap. I went with a 0.068uF @ 630V one. Now I got rid of all the hash! When you get one of these, open just the base. Two screws hold the little switching supply. Look at the DC end. It has the + and - marked on the board. Good news is the board uses screws to hold the wires! A bit of teflon tubing to the cap leads, solder it across the DC end, tuck it where you can, and the hash is totally gone! I went with a bigger cap simply because that reviewer commented, "that quieted it down a bit", and I wanted more than a "bit". From ranchorobbo at gmail.com Tue Sep 22 13:57:05 2015 From: ranchorobbo at gmail.com (Rob Atkinson) Date: Tue, 22 Sep 2015 12:57:05 -0500 Subject: [AMRadio] LED Magnifying Lamp by Duratool In-Reply-To: <56017D5A.9080309@comcast.net> References: <56017D5A.9080309@comcast.net> Message-ID: And what would it have cost the manufacturer to put in a cap at the plant? Bought in quantity maybe 10 cents per lamp? But no, who cares about a bunch of geezer hams and swls. No one listens to the radio anymore anyway. 73 Rob K5uJ > "But unfortunately, when the light is on, it gives off a fair bit of > RF hash that can be heard in a radio. I added a 0.022uF 630V cap at > the output terminals to the LEDs and that quieted it down a bit. I > wish that the people that spec out these designs would pay more > attention to spurious RF that some power supplies cause." > > I took it apart when it got here. The power supply is in the base. I went > with a bigger value cap. I went with a 0.068uF @ 630V one. Now I got rid of > all the hash! From ranickel at comcast.net Tue Sep 22 14:06:45 2015 From: ranickel at comcast.net (Robert Nickels) Date: Tue, 22 Sep 2015 13:06:45 -0500 Subject: [AMRadio] LED Magnifying Lamp by Duratool In-Reply-To: References: <56017D5A.9080309@comcast.net> Message-ID: <560198B5.2030900@comcast.net> On 9/22/2015 12:57 PM, Rob Atkinson wrote: > And what would it have cost the manufacturer to put in a cap at the plant? Not much, Rob but many devices get to market without any attempt to mitigate RFI. I found this out after replacing the power supply in a PC only to discover all the bands were "dead" - because the noise floor had been raised to the point where only the strongest signals could be heard. There was an IEC connector for the cord, but no filter components. MPJA is a good source of AC line filters at low prices, like this: http://www.mpja.com/Noise-Filter-AC-Line-10A-250VAC-IEC-Input/productinfo/31918%20FL Clicking on item pictures enlarges to where the schematic and component values can be read, as well as the mfgr's name and p/n so the datasheet can be obtained for more details. These are great for homebrew projects or can be put in a box to add an inline filter. 73, Bob W9RAN From collinsradio at comcast.net Tue Sep 22 15:01:34 2015 From: collinsradio at comcast.net (David Knepper) Date: Tue, 22 Sep 2015 15:01:34 -0400 Subject: [AMRadio] Liquidation Message-ID: <609E5C9C20C541358FC14966CDCEFD80@DavidPC> I have several versions of the National NC-100 receivers that I wish to offer to some enterprising ham who either needs parts or wishes to restore these units. One receiver has a matching speaker. Any reasonable offer would be acceptable. Equipment is at the Collins Radio Center, near Johnstown, PA A private landfill is waiting since I need the room ASAP. Whoever comes by will be receiving some ?door prizes. If you want pictures, send me $5.00 for my time. Thank you (814) 487-4403 David Knepper - W3CRA/W3ST Collins Radio Association www.collinsradio.us Join the CRA today From rbethman at comcast.net Tue Sep 22 15:57:15 2015 From: rbethman at comcast.net (rbethman) Date: Tue, 22 Sep 2015 15:57:15 -0400 Subject: [AMRadio] LED Magnifying Lamp by Duratool In-Reply-To: <560198B5.2030900@comcast.net> References: <56017D5A.9080309@comcast.net> <560198B5.2030900@comcast.net> Message-ID: <5601B29B.5050306@comcast.net> On 9/22/2015 2:06 PM, Robert Nickels wrote: > On 9/22/2015 12:57 PM, Rob Atkinson wrote: >> And what would it have cost the manufacturer to put in a cap at the >> plant? > Not much, Rob but many devices get to market without any attempt to > mitigate RFI. I found this out after replacing the power supply in > a PC only to discover all the bands were "dead" - because the noise > floor had been raised to the point where only the strongest signals > could be heard. There was an IEC connector for the cord, but no > filter components. > > MPJA is a good source of AC line filters at low prices, like this: > > http://www.mpja.com/Noise-Filter-AC-Line-10A-250VAC-IEC-Input/productinfo/31918%20FL > > > Clicking on item pictures enlarges to where the schematic and > component values can be read, as well as the mfgr's name and p/n so > the datasheet can be obtained for more details. These are great for > homebrew projects or can be put in a box to add an inline filter. > > 73, Bob W9RAN I would simply point out that the specific cap came from one of the infamous AA1IP Brad Thompson's cap Blivets. He has picked up where our old friend Lloyd left of when he passed. I've got so many caps here that it is hard to NOT find one I need. The only place where this myriad collection runs shy is electrolytic ones in the 450VDC range. I have more than enough for 10V, 25V, and in ranges up to 60V. I haven't had much call for 1400VDC though. Regards, Bob - N0DGN From amradio at mailman.qth.net Fri Sep 25 21:08:07 2015 From: amradio at mailman.qth.net (CL in NC via AMRadio) Date: Fri, 25 Sep 2015 18:08:07 -0700 Subject: [AMRadio] 2 things Message-ID: <1443229687.28595.YahooMailBasic@web160601.mail.bf1.yahoo.com> I don't remember if I sung the praises for Mark Oppat that someone on this list suggested for the concentric pots I needed, but he came through with a newly assemble unit for the HQ160 and the Q Mult/Bandwidth control is doing it's thing like designed. Check him out if you need a screwball unobtanium control. If anybody wants or knows somebody who is afflicted with the ARC21 bug, I have a full set of modules from the ARC21, removed, not clipped as far as I can tell and has all the tubes except the finals. Free for the cost of shipping from 28739 or pick up. I'll be going to Waukegan, IL the latter part of October, I 40 to I 75 to I 74, to I 65 to Gary, IN, from there have several options, can adjust if you are interested. Charlie, W4MEC in NC From k4kyv at charter.net Tue Sep 29 17:50:14 2015 From: k4kyv at charter.net (Donald Chester) Date: Tue, 29 Sep 2015 16:50:14 -0500 Subject: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 Message-ID: <001801d0fb00$d278faa0$776aefe0$@charter.net> I submitted them as "reply comments" since the deadline for originals had passed, but I think this covers everything I wanted to say. http://apps.fcc.gov/ecfs/comment/view?id=60001300591 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From rbethman at comcast.net Tue Sep 29 17:55:56 2015 From: rbethman at comcast.net (rbethman) Date: Tue, 29 Sep 2015 17:55:56 -0400 Subject: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 In-Reply-To: <001801d0fb00$d278faa0$776aefe0$@charter.net> References: <001801d0fb00$d278faa0$776aefe0$@charter.net> Message-ID: <560B08EC.20806@comcast.net> On 9/29/2015 5:50 PM, Donald Chester wrote: > I submitted them as "reply comments" since the deadline for originals had > passed, but I think this covers everything I wanted to say. > > http://apps.fcc.gov/ecfs/comment/view?id=60001300591 Yes Sir! I did that also a little while back. The more we get in our two cents worth, the better off we are! Regards, Bob - N0DGN From k4kyv at charter.net Tue Sep 29 17:59:31 2015 From: k4kyv at charter.net (Donald Chester) Date: Tue, 29 Sep 2015 16:59:31 -0500 Subject: [AMRadio] FCC Comments Message-ID: <002101d0fb02$1ed33950$5c79abf0$@charter.net> You may have to copy and paste the link to your browser. For some reason the software used to run this list always screws up links that I include in the text. When I reviewed it, the link wouldn't work and gave me an error message when I clicked on it directly, but I copied and pasted and it opened the page just fine. I can't figure out what I do wrong; other people seem to be able to embed links in their postings without any problem. Don k4kyv --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From rbethman at comcast.net Tue Sep 29 18:10:03 2015 From: rbethman at comcast.net (rbethman) Date: Tue, 29 Sep 2015 18:10:03 -0400 Subject: [AMRadio] FCC Comments In-Reply-To: <002101d0fb02$1ed33950$5c79abf0$@charter.net> References: <002101d0fb02$1ed33950$5c79abf0$@charter.net> Message-ID: <560B0C3B.9060703@comcast.net> On 9/29/2015 5:59 PM, Donald Chester wrote: > You may have to copy and paste the link to your browser. For some reason > the software used to run this list always screws up links that I include in > the text. When I reviewed it, the link wouldn't work and gave me an error > message when I clicked on it directly, but I copied and pasted and it > opened the page just fine. I can't figure out what I do wrong; other people > seem to be able to embed links in their postings without any problem. > > Don k4kyv Don, No problem here! I clicked on your link and the Browser went straight to it! Regards, Bob - N0DGN From paul at paulbaldock.com Tue Sep 29 21:30:58 2015 From: paul at paulbaldock.com (Paul Baldock) Date: Tue, 29 Sep 2015 18:30:58 -0700 Subject: [AMRadio] AM is alive and (may be not) well In-Reply-To: <560B0C3B.9060703@comcast.net> References: <002101d0fb02$1ed33950$5c79abf0$@charter.net> <560B0C3B.9060703@comcast.net> Message-ID: 15 Meters conditions have been outstanding the last few days with great propagation all around Europe and the US (from W7). Given such good conditions the activity level should be bursting at the seems or a least spreading beyond 21.42MHz to 21.43MHz, but it seems there are more people conversing on this forum than there are on AM. So its time to put the keyboard away and actually get on the air. - Paul KW7Y --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus From ku4xr at yahoo.com Wed Sep 30 00:11:49 2015 From: ku4xr at yahoo.com (Andy - KU4XR) Date: Tue, 29 Sep 2015 21:11:49 -0700 Subject: [AMRadio] Need Manual for Gentner Phoenix Processor Message-ID: <1443586309.51103.YahooMailBasic@web125304.mail.ne1.yahoo.com> Hi all: I have a 1988 Gentner phoenix that has the AMC-2 Revision A - NRSC / Limiter card.. I could really use a manual for this thing, and the almost all knowing google does not dig up any meaningful info at all.. Do any of you guys have any info at your disposal for this box ?? even real world experience comments will be helpful.. I especially need to know the jumper locations on the AMC-2 card.. They are not marked.. Thanks for any help with this box.. 73: - Andy , KU4XR From ne1s at securespeed.us Wed Sep 30 08:40:16 2015 From: ne1s at securespeed.us (Larry Szendrei) Date: Wed, 30 Sep 2015 08:40:16 -0400 Subject: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 In-Reply-To: <001801d0fb00$d278faa0$776aefe0$@charter.net> References: <001801d0fb00$d278faa0$776aefe0$@charter.net> Message-ID: <560BD830.1080603@securespeed.us> On 9/29/15 5:50 PM, Donald Chester wrote: > I submitted them as "reply comments" since the deadline for originals had > passed, but I think this covers everything I wanted to say. > > http://apps.fcc.gov/ecfs/comment/view?id=60001300591 > > Very well written, Don, and I think you've covered it all. Thank you. 73, -Larry/NE1S From w3slk at verizon.net Wed Sep 30 09:30:34 2015 From: w3slk at verizon.net (Mike Sawyer) Date: Wed, 30 Sep 2015 09:30:34 -0400 Subject: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 In-Reply-To: <560BD830.1080603@securespeed.us> References: <001801d0fb00$d278faa0$776aefe0$@charter.net> <560BD830.1080603@securespeed.us> Message-ID: <000001d0fb84$300fa190$902ee4b0$@verizon.net> Just looking over it, I would ask Don if he could amend his statement in his response. I think it was just an oversight. "I wish to reiterate that it is not only the 1750-1800 kHz band, but the entire segment from 1715 kHz to 2000 kHz that is "lightly used", to the point of being practically devoid of radio signals of any kind." I think he intended it to read "...from 1715 kHz to 1800 kHz..." Mod-U-Lator, Mike(y)/W3SLK -----Original Message----- From: amradio-bounces at mailman.qth.net [mailto:amradio-bounces at mailman.qth.net] On Behalf Of Larry Szendrei Sent: Wednesday, September 30, 2015 8:40 AM To: amradio at mailman.qth.net Subject: Re: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 On 9/29/15 5:50 PM, Donald Chester wrote: > I submitted them as "reply comments" since the deadline for originals > had passed, but I think this covers everything I wanted to say. > > http://apps.fcc.gov/ecfs/comment/view?id=60001300591 > > Very well written, Don, and I think you've covered it all. Thank you. 73, -Larry/NE1S ______________________________________________________________ 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 Message delivered to w3slk at verizon.net From ne1s at securespeed.us Wed Sep 30 11:15:41 2015 From: ne1s at securespeed.us (Larry Szendrei) Date: Wed, 30 Sep 2015 11:15:41 -0400 Subject: [AMRadio] I got my comments in re: Radio Buoy Beacons on 1900-2000 In-Reply-To: <000001d0fb84$300fa190$902ee4b0$@verizon.net> References: <001801d0fb00$d278faa0$776aefe0$@charter.net> <560BD830.1080603@securespeed.us> <000001d0fb84$300fa190$902ee4b0$@verizon.net> Message-ID: <560BFC9D.1060507@securespeed.us> On 9/30/15 9:30 AM, Mike Sawyer wrote: > Just looking over it, I would ask Don if he could amend his statement in his > response. I think it was just an oversight. > > "I wish to reiterate that it is not only the 1750-1800 kHz band, but the > entire segment from 1715 kHz to 2000 kHz > that is "lightly used", to the point of being practically devoid of radio > signals of any kind." > > I think he intended it to read "...from 1715 kHz to 1800 kHz..." > > Good catch! An easy mistake to make... From ku4xr at yahoo.com Wed Sep 30 13:35:59 2015 From: ku4xr at yahoo.com (Andy - KU4XR) Date: Wed, 30 Sep 2015 10:35:59 -0700 Subject: [AMRadio] Repost: Need Manual for Gentner Phoenix Processor Message-ID: <1443634559.45295.YahooMailBasic@web125304.mail.ne1.yahoo.com> Not sure if my post makes it thru the filters.. I have no way to know, so I'm reposting in the hope that it gets to the list.. Hi all: I have a 1988 Gentner phoenix that has the AMC-2 Revision A - NRSC / Limiter card.. I could really use a manual for this thing, and the almost all knowing google does not dig up any meaningful info at all.. Do any of you guys have any info at your disposal for this box ?? even real world experience comments will be helpful.. I especially need to know the jumper locations on the AMC-2 card.. They are not marked.. Thanks for any help with this box.. 73: - Andy , KU4XR

This page last updated 21 Oct 2017.