From magnuson at mac.com Sun Nov 2 19:24:31 2014 From: magnuson at mac.com (Waldo Magnuson) Date: Mon, 03 Nov 2014 00:24:31 +0000 (GMT) Subject: [Hallicrafters] SX-28A measurement request Message-ID: <4fd95d00-2055-4e10-99ac-066463da8b9a@me.com> Hi, ? ?I'm back trying to get my second SX-28A operational. ?After 5 minutes it blew a fuse. ?I pulled the 5Z3 and pin 2 to pin 3 measures 80.1 ohms (schematic value is 78 ohms). ?But pin 1 to pin 4 measures infinity (schematic value is 0.1 ohms). ?I have a second SX-28A which does play okay and I pulled it's 5Z3 and made the same measurements AND the pin 1 to pin 4 ALSO measures infinity. ?I don't understand the schematic and the measurements I made. ?If someone has a SX-28A easily accessible would you make the same resistance measurements (no power and 5Z3 pulled of course). ?Many thanks. Skip Magnuson W7WGM Spokane, WA From bcarling at cfl.rr.com Mon Nov 3 12:45:59 2014 From: bcarling at cfl.rr.com (bcarling at cfl.rr.com) Date: Mon, 03 Nov 2014 12:45:59 -0500 Subject: [Hallicrafters] FS: Rare Bliley CCO - 6AG7 Crystal Oscilator Module Message-ID: <5457BF57.10795.17514AF@bcarling.cfl.rr.com> FOR SALE: Bliley CCO - "Crystal Controlled Oscillator" = 6AG7 Crystal Oscilator Module Here is a Very Cool Commerically built 6AG7 tube oscillator - great for the heart of a homebrew transmitter. Rare antique rom hte 1950s - long since discontinued. This is a Bliley Co. gadget uilt on a little chassis with terminals for power and RF out. On the front there is a nice Ceramic Millen Co. style ceramic crystal socket suitaqble for FT243 crystals. There is a switch for selecting ranges for use at 27 - 30 MHz or 46 - 54 MHz. Intended for VHF but with the change of one coil at the poutput this can easily become be an HF oscillator. Neat looking gray painted chassis with terminal strip in rear for all connections. Excellent condition. Comes with all documentation. Complete with the 6AG7, tube - tested nandeworking. Available for $25.00 plus shipping. Pictures and details here: http://af4k.com/cco.htm 73 - Bry AF4K Brian Carling, Radio AF4K From rsauvan at beyondbb.com Tue Nov 4 21:16:52 2014 From: rsauvan at beyondbb.com (Robert Sauvan) Date: Tue, 04 Nov 2014 19:16:52 -0700 Subject: [Hallicrafters] knob to trade Message-ID: <54598894.7030504@beyondbb.com> Hi all, I am looking for a Volume or Sensitivity knob from a SX-101. I have a Response knob in excellent condition to trade if someone needs one of those. Thanks-Bob-W0YBS From manualman at juno.com Sat Nov 8 14:14:33 2014 From: manualman at juno.com (manualman at juno.com) Date: Sat, 8 Nov 2014 14:14:33 -0500 Subject: [Hallicrafters] Clearing Out Old Manuals - They're Going To Recycling Message-ID: Earlier in the year I decided to go through some of my file folders and purge the older replications that were done 15 to 20 years ago and send them all to paper recycling. This also includes some originals. None of them meet my current quality standards. I decided to post the list and see if anyone wanted this stuff before I send it all off to the recycling center at the end of November. All manuals, whether original or replication, 5 pages, 50 pages, 100 pages, etc. are $1 each(basically time and material) plus shipping. To view the PDF list and the details of procurement, I posted it all on AMFone.net. You don't have to a member to view the list. At the bottom of the blurb, there is a PDF. http://amfone.net/Amforum/index.php?topic=37253.0 Pete, wa2cwa From gsteffens at bevcomm.net Sat Nov 8 22:22:35 2014 From: gsteffens at bevcomm.net (Gerry Steffens) Date: Sat, 8 Nov 2014 21:22:35 -0600 Subject: [Hallicrafters] Hallicrafters serial numbers Message-ID: <000301cffbcc$68bd4b90$3a37e2b0$@bevcomm.net> Is there any documentation or knowledge of how Hallicrafters assigned serial numbers? I have a collection of McMurdo Silver radios in addition to the Hallicrafters collection. Hallicrafters began assembling radios for McMurdo Silver in September 1936 which was near the end of the Masterpiece V production. Hallicrafters attached license tags under the McMurdo Silver chassis they assembled. The early Masterpiece VI radios had a paper version of the Hallicrafters license tag with a serial number. Later Masterpiece VIs had metal license tags with serial numbers. Both the paper and metal tags are identical to the metal tag on my SX-28 and tags on other Hallicrafters equipment of that vintage, complete with the preprinted "h" followed by a number. Is there a connection of the serial numbers to when the unit was assembled? If so, do we know what that connection is? Do we know when they switched to metal tags from paper? A variant of the Masterpiece VI has surfaced. We know of three of them, I have one. I am attempting to determine when they were produced as there is no Silver documentation of any such variant. Were these early pre-production models? Late production modifications? Or what? After the Silver bankruptcy in November 1938, Davega City of New York bought the inventory of hardware and continued to sell Masterpiece VI and 15-17 radios into 1941. Might these radios be of that genre? Or, Radio News magazine published one ad for the 1939 Masterpiece, actually after the Silver shutdown. Could these radios be a planned 1939 version? If there is any knowledge of Hallicrafters serial numbers, it might be helpful in finding answers to these questions. Thanks for any assistance, Gerry Gerald L Steffens P.E. Oronoco MN Radio Historian, collecting & restoring E.H. Scott, Heath, McMurdo Silver, Hallicrafters, National, Zenith Transoceanic & any other interesting radios & classic Oldsmobiles Collections stand at about 300 radios, 5 Oldsmobiles & a 1950 GMC long bed 1/2 ton From cateswa at msn.com Sun Nov 9 13:49:09 2014 From: cateswa at msn.com (Walt Cates) Date: Sun, 9 Nov 2014 12:49:09 -0600 Subject: [Hallicrafters] sr400a Message-ID: Simon. See red below for a quick response. I'll be back Monday with more on the het osc. Dear Walt further to earlier posts, I went back and started from beginning again. no problem with carrier osc. the heterodyne osc is ok on 80 and 40 showing over 4vpp at pin 8 V2. however 20 and above low and waveforms distorted. volts on V12 ok except pin 6. according to mauaul shold be 95v. also resistance shown as 40K. however 150v line has a resistance of 8k and pin 6 is fed through R78, 100R and R 77 10kR. so could not possible get to 40K. the R78 and R77 agreed with circuit diagram. however part lists shows R78 as 1K and R77 as 33K. The schematic is correct, the parts list is incorrect. In the original 400 R78 & R79 were 1K and 33K. The change in value was not updated in the 400A parts list. Which is correct? what ealse should I check to get Het Osc giving correct output on higher bands? With regard to incorrect voltage at tie point cr11 and l20 found that r18o on audio cathode had gone up to over 1K on replacing with 120R volts now 15 on rx but still a little high on tx at 2.5v. pulling v15 leaves volts at 2.5. Ok, this is good now. That should solve some of your problems. It is a good idea to replace both C146 (25uf) and C218 (5uf) if they are original. You may want to try a quick alignment at this point to verify what faults remain. in your earlier response you said that CR11 should be 7v in both RX and TX. Rx is 7 v but TX neg 1.8v. The anode should be 7v in receive and transmit modes. The cathode should be 14-16vdc in receive and less than 2vdc in transmit mode. To read the bias voltages on this switching network you need to pull V12. The load of a meter in the ckt, with rf present will turn the ckt into a rectifier and produce the negative voltage you are seeing. You can also measure the cathode voltage below L20 where there is no rf from the het osc. bye the way in your repair & Rest notes para 3-5-2 C you state that if the volts are correct the either CR11 or C47 are bad. I think this should be C107. You got me there, my error it should be C107 you may also add C106 or a shorted L20 to the possible faults. Simon G8OJ Best Regards, Walt Cates, WD0GOF A generous person will prosper; whoever refreshes others will be refreshed. From hallicrafterssr2000 at k9axn.com Mon Nov 10 15:10:40 2014 From: hallicrafterssr2000 at k9axn.com (Jim Liles) Date: Mon, 10 Nov 2014 14:10:40 -0600 Subject: [Hallicrafters] sr400a In-Reply-To: References: Message-ID: <4D53B964CE7E4CDC963C1D1D87C03C8A@LILESJLAPTOP> Good afternoon Walt et al, The reason for the Heterodyne oscillator appearing distorted on the higher bands is the 20, 15, and 10 Metre bands use doubling crystals i.e 20 Meters is 10.25 Mc fundamental for 20.5 Mc second harmonic. Every second wave is muted. The output on 80 and 40 is significantly higher than 20,15,and 10 Metres. Use the manual to verify the voltages and do not use a scope even with a X10 1Meg probe, the capacity of the probe will warp the measurement. Use a vtvm with a low capacity probe i.e. HP410B or C. If you don?t have either, use a Demod probe and VTVM, works very well. The measurements as acquired in the manual are right. BTW, Walt, I do not subscribe to the Yahoo Hallicrafters site but I do watch your contributions to the WZE site. Great job! Kindest regards Jim K9AXN -----Original Message----- From: Walt Cates Sent: Sunday, November 09, 2014 12:49 PM To: sdw at dwdorset.co.uk ; hallicraftersradios at yahoogroups.com ; hallicrafters Subject: [Hallicrafters] sr400a Simon. See red below for a quick response. I'll be back Monday with more on the het osc. Dear Walt further to earlier posts, I went back and started from beginning again. no problem with carrier osc. the heterodyne osc is ok on 80 and 40 showing over 4vpp at pin 8 V2. however 20 and above low and waveforms distorted. volts on V12 ok except pin 6. according to mauaul shold be 95v. also resistance shown as 40K. however 150v line has a resistance of 8k and pin 6 is fed through R78, 100R and R 77 10kR. so could not possible get to 40K. the R78 and R77 agreed with circuit diagram. however part lists shows R78 as 1K and R77 as 33K. The schematic is correct, the parts list is incorrect. In the original 400 R78 & R79 were 1K and 33K. The change in value was not updated in the 400A parts list. Which is correct? what ealse should I check to get Het Osc giving correct output on higher bands? With regard to incorrect voltage at tie point cr11 and l20 found that r18o on audio cathode had gone up to over 1K on replacing with 120R volts now 15 on rx but still a little high on tx at 2.5v. pulling v15 leaves volts at 2.5. Ok, this is good now. That should solve some of your problems. It is a good idea to replace both C146 (25uf) and C218 (5uf) if they are original. You may want to try a quick alignment at this point to verify what faults remain. in your earlier response you said that CR11 should be 7v in both RX and TX. Rx is 7 v but TX neg 1.8v. The anode should be 7v in receive and transmit modes. The cathode should be 14-16vdc in receive and less than 2vdc in transmit mode. To read the bias voltages on this switching network you need to pull V12. The load of a meter in the ckt, with rf present will turn the ckt into a rectifier and produce the negative voltage you are seeing. You can also measure the cathode voltage below L20 where there is no rf from the het osc. bye the way in your repair & Rest notes para 3-5-2 C you state that if the volts are correct the either CR11 or C47 are bad. I think this should be C107. You got me there, my error it should be C107 you may also add C106 or a shorted L20 to the possible faults. Simon G8OJ Best Regards, Walt Cates, WD0GOF A generous person will prosper; whoever refreshes others will be refreshed. ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From dfischer at usol.com Mon Nov 10 20:20:57 2014 From: dfischer at usol.com (Duane Fischer, W8DBF) Date: Mon, 10 Nov 2014 20:20:57 -0500 Subject: [Hallicrafters] Hallicrafters serial numbers References: <000301cffbcc$68bd4b90$3a37e2b0$@bevcomm.net> Message-ID: <008301cffd4f$20ee0ff0$ce54e8cc@hpdc5100mt> Please post any answers to this interesting question to the list so it may live on in the archives. Thanks - ----- Original Message ----- From: "Gerry Steffens" To: Cc: "'Rodney Boleyn'" Sent: Saturday, November 08, 2014 10:22 PM Subject: [Hallicrafters] Hallicrafters serial numbers > > Is there any documentation or knowledge of how Hallicrafters assigned > serial > numbers? > > I have a collection of McMurdo Silver radios in addition to the > Hallicrafters collection. Hallicrafters began assembling radios for > McMurdo > Silver in September 1936 which was near the end of the Masterpiece V > production. Hallicrafters attached license tags under the McMurdo Silver > chassis they assembled. The early Masterpiece VI radios had a paper > version > of the Hallicrafters license tag with a serial number. Later Masterpiece > VIs had metal license tags with serial numbers. Both the paper and metal > tags are identical to the metal tag on my SX-28 and tags on other > Hallicrafters equipment of that vintage, complete with the preprinted "h" > followed by a number. > > Is there a connection of the serial numbers to when the unit was > assembled? > If so, do we know what that connection is? Do we know when they switched > to > metal tags from paper? > > A variant of the Masterpiece VI has surfaced. We know of three of them, I > have one. I am attempting to determine when they were produced as there > is > no Silver documentation of any such variant. Were these early > pre-production models? Late production modifications? Or what? > > After the Silver bankruptcy in November 1938, Davega City of New York > bought > the inventory of hardware and continued to sell Masterpiece VI and 15-17 > radios into 1941. Might these radios be of that genre? Or, Radio News > magazine published one ad for the 1939 Masterpiece, actually after the > Silver shutdown. Could these radios be a planned 1939 version? > > If there is any knowledge of Hallicrafters serial numbers, it might be > helpful in finding answers to these questions. > > Thanks for any assistance, > > Gerry > > > Gerald L Steffens P.E. > Oronoco MN > > Radio Historian, collecting & restoring E.H. Scott, Heath, McMurdo Silver, > Hallicrafters, National, Zenith Transoceanic & any other interesting > radios > & classic Oldsmobiles > > Collections stand at about 300 radios, 5 Oldsmobiles & a 1950 GMC long bed > 1/2 ton > > > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2247 / Virus Database: 4189/7984 - Release Date: 10/31/14 > Internal Virus Database is out of date. > ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 4189/7984 - Release Date: 10/31/14 Internal Virus Database is out of date. From hwhall at compuserve.com Mon Nov 10 17:01:17 2014 From: hwhall at compuserve.com (hwhall at compuserve.com) Date: Mon, 10 Nov 2014 17:01:17 -0500 Subject: [Hallicrafters] Englewood Colo Craigslist Message-ID: <8D1CB48FCBE201E-834-439E@webmail-va174.sysops.aol.com> http://denver.craigslist.org/ele/4709589002.html Looks like a lot of neat stuff. Says he's willing to ship purchases. Wayne WB4OGm From karel at alberta02.com Mon Nov 10 19:24:57 2014 From: karel at alberta02.com (Karel J) Date: Mon, 10 Nov 2014 19:24:57 -0500 Subject: [Hallicrafters] Greetings, and SX-32 Meter? Message-ID: Hi Everyone. I've been a hallicrafters fan since about age 15. I found an old S-85 in a flea market, and my dad restrung the dial for me, we aligned it, and I was smitten. 20 years later, here I am. :) Anyway, I thought I would introduce myself, I'm Karel VE3KJX, (former VE6KLJ) and live near stratford ontario. At the moment, all I have is an SX32. It's nearly fully restored, and I was lucky to get it that way from a Ham in Calgary, when I lived over there. I unfortunately was using a signal generator to check alignment of the radio after moving across Canada, and I think I blew the s-meter. Where, oh where would I find one? Cheers! Karel VE3KJX From hallicrafterssr2000 at k9axn.com Tue Nov 11 10:33:18 2014 From: hallicrafterssr2000 at k9axn.com (Jim Liles) Date: Tue, 11 Nov 2014 09:33:18 -0600 Subject: [Hallicrafters] sr400a In-Reply-To: <8704046.1415682500982.JavaMail.root@elwamui-milano.atl.sa.earthlink.net> References: <8704046.1415682500982.JavaMail.root@elwamui-milano.atl.sa.earthlink.net> Message-ID: <6B2F811F4D7B49CC81DD14C10914442E@LILESJLAPTOP> Good morning Rocco, Yes the demod probe is the the old rf probe. I have several that I build myself but they're clunky. I use the probe frequently so bought one that is convenient to use. Search on ebay for ?RF detector probe green?. They are about $30.00. The capacity is 5pf and they use Schottky diodes with a turn on of about .25v. You will need a detector probe to do sweep analysis in the 6.5Mc I.F. system. The meter that I generally use is the Micronta 22-208A FET VOM. They are extraordinarily inexpensive but superb meters --- as good as any. For high energy RF measurements, (Antenna lead on RF amplifiers) I use the HP410B one of the best low capacity RF meters. The Micronta measures P/P the HP410B RMS. Using the Demod probe creates a very effective and inexpensive RF voltmeter. Kindest regards Jim K9AXN -----Original Message----- From: lardiere at ix.netcom.com Sent: Monday, November 10, 2014 11:08 PM To: Jim Liles Subject: Re: [Hallicrafters] sr400a Jim, What is a "demod" probe? One of the old fashioned diode based RF probes? I have an old Heathkit version of one of those but never thought to try it with a modern high impedance meter. I understand what you mean about 10X probes loading down circuits, but I have yet to find a good low capacitance RF voltmeter, at least at a semi reasonable price. I did find a modern scope probe with 6 pF capacitance, and I may give one a try. 73, Rocco Lardiere N6KN -----Original Message----- >From: Jim Liles >Sent: Nov 10, 2014 12:10 PM >To: Walt Cates , sdw at dwdorset.co.uk, hallicraftersradios at yahoogroups.com, hallicrafters >Subject: Re: [Hallicrafters] sr400a > >Good afternoon Walt et al, > >The reason for the Heterodyne oscillator appearing distorted on the higher bands is the 20, 15, and 10 Metre bands use doubling crystals i.e 20 Meters is 10.25 Mc fundamental for 20.5 Mc second harmonic. Every second wave is muted. > >The output on 80 and 40 is significantly higher than 20,15,and 10 Metres. Use the manual to verify the voltages and do not use a scope even with a X10 1Meg probe, the capacity of the probe will warp the measurement. Use a vtvm with a low capacity probe i.e. HP410B or C. If you don?t have either, use a Demod probe and VTVM, works very well. The measurements as acquired in the manual are right. > >BTW, Walt, I do not subscribe to the Yahoo Hallicrafters site but I do watch your contributions to the WZE site. Great job! > >Kindest regards Jim K9AXN > > >-----Original Message----- >From: Walt Cates >Sent: Sunday, November 09, 2014 12:49 PM >To: sdw at dwdorset.co.uk ; hallicraftersradios at yahoogroups.com ; hallicrafters >Subject: [Hallicrafters] sr400a > > > > >Simon. See red below for a quick response. I'll be back Monday with more on the het osc. Dear Walt > > >further to earlier posts, I went back and started from beginning again. > > >no problem with carrier osc. > > >the heterodyne osc is ok on 80 and 40 showing over 4vpp at pin 8 V2. > > >however 20 and above low and waveforms distorted. volts on V12 ok except pin 6. according to mauaul shold be 95v. also resistance shown as 40K. however 150v line has a resistance of 8k and pin 6 is fed through R78, 100R and R 77 10kR. so could not possible get to 40K. the R78 and R77 agreed with circuit diagram. however part lists shows R78 as 1K and R77 as 33K. The schematic is correct, the parts list is incorrect. In the original 400 R78 & R79 were 1K and 33K. The change in value was not updated in the 400A parts list. > > >Which is correct? > > >what ealse should I check to get Het Osc giving correct output on higher bands? > > >With regard to incorrect voltage at tie point cr11 and l20 found that r18o on audio cathode had gone up to over 1K on replacing with 120R volts now 15 on rx but still a little high on tx at 2.5v. pulling v15 leaves volts at 2.5. Ok, this is good now. That should solve some of your problems. It is a good idea to replace both C146 (25uf) and C218 (5uf) if they are original. You may want to try a quick alignment at this point to verify what faults remain. > > >in your earlier response you said that CR11 should be 7v in both RX and TX. Rx is 7 v but TX neg 1.8v. The anode should be 7v in receive and transmit modes. The cathode should be 14-16vdc in receive and less than 2vdc in transmit mode. To read the bias voltages on this switching network you need to pull V12. The load of a meter in the ckt, with rf present will turn the ckt into a rectifier and produce the negative voltage you are seeing. You can also measure the cathode voltage below L20 where there is no rf from the het osc. > > >bye the way in your repair & Rest notes para 3-5-2 C you state that if the volts are correct the either CR11 or C47 are bad. I think this should be C107. You got me there, my error it should be C107 you may also add C106 or a shorted L20 to the possible faults. > > >Simon G8OJ > > >Best Regards, Walt Cates, WD0GOF > >A generous person will prosper; whoever refreshes others will be refreshed. > > >______________________________________________________________ >Hallicrafters mailing list >Home: http://mailman.qth.net/mailman/listinfo/hallicrafters >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Hallicrafters at mailman.qth.net > >List Administrator: Duane Fischer, W8DBF >** For Assistance: dfischer at usol.com ** > > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >______________________________________________________________ >Hallicrafters mailing list >Home: http://mailman.qth.net/mailman/listinfo/hallicrafters >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Hallicrafters at mailman.qth.net > >List Administrator: Duane Fischer, W8DBF >** For Assistance: dfischer at usol.com ** > > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html From icysubdweller at gmail.com Tue Nov 11 12:58:22 2014 From: icysubdweller at gmail.com (Rodney Boleyn) Date: Tue, 11 Nov 2014 09:58:22 -0800 Subject: [Hallicrafters] Fwd: Hallicrafters serial numbers In-Reply-To: <000301cffbcc$68bd4b90$3a37e2b0$@bevcomm.net> References: <000301cffbcc$68bd4b90$3a37e2b0$@bevcomm.net> Message-ID: Gerry, Here is an email I exchanged with Henry Rogers (Western Historic Radio Museum) on this very topic. According to Henry, serial number tags in the Hallicrafters factory were assigned nearly chronologically based on when a radio rolled off the line... it's not clear to me from his email whether serial numbers were batched by model, but if they were, the batches can be sorted chronologically by individual production runs. Based on the serial numbers of the known Hallicrafters DD-1 radios, Henry believes one of these 3 McMurdo Silver radios was built in the weeks or days before the first production run of the DD-1, which happened in August, 1938. The other two radios (including yours) were built in the days or weeks before the second DD-1 production run, which was approx. Nov. 1938. -Rodney ---------- Forwarded message ---------- From: Henry Rogers Date: Sat, Apr 19, 2014 at 10:44 AM Subject: Re: Information on Hallicrafters and McMurdo Silver production? To: Rodney Boleyn Hi Rodney, Please refer to two articles on my website, radioblvd.com - First, would be the Hallicrafters SX-28 article in the section on serial numbering and how Hallicrafters assigned numbers. Then, refer to the Hallicrafters DD-1 article in the serial number section. Essentially, everything at Halli was usually assigned numbers sequentially. Not always, but most of the time. The DD-1 first production run for example used a "block" of numbers - H-80500 up to H-80600 approximately. All of these DD-1 SNs were assigned in August 1938 or so. There was a small second run of DD-1 receivers that use SNs in the H-856XX range and are from Nov-Dec 1938. All three examples of your SNs are from around August 1938 to about November 1938. Hallicrafters was like most of the radio companies at the time. Their production is really high September through December and slacks off after that. Production in the summer was very low since new models were being engineered and retooling was probably going to be necessary. Halli generally bought all of the parts external to the company and assembled receivers so retooling was not too big of a deal. Since the SN assignment quantity changes during the year, it's difficult to exactly estimate where a number belongs date-wise other than just generally - unless you have the inspection tag. These are dated when the receiver left test and was ready to ship. By comparing similar SNs from tags one can get a general idea of production flow throughout the year. It's certainly possible that the 83XXX and 84XXX numbers are from the same day or so. I would think that the MS MPVI receivers would have been assembled on a line and would have been done in one run but who knows. Halli could have had a small group of assemblers that handled "special orders" and that's why the SNs are separated by a month or two. 73, Henry WA7YBS ------------------------------ *From:* Rodney Boleyn *To:* w7ybs at att.net *Sent:* Thursday, April 17, 2014 1:28 PM *Subject:* Information on Hallicrafters and McMurdo Silver production? Hi Henry, Norman Braithwaite referred me to you as a possible source of Hallicrafters production information based on serial numbers. I recently acquired a McMurdo Silver 20-tube radio that says "Masterpiece VI" on the front dial. The Masterpiece VI radios are 21-tube radios; this is a previously-unrecognized variant of the MPVI. No schematic seems to have ever been found for it. By searching the internet, I have found that there are 3 known to exist in the online collecting community... the one I have, and two others that belong to members of antiqueradios.com: y2k Bruce and Jonboy55 . Jon described the radio in this thread in 2009, although its unique attributes do not seem to have been generally recognized at that time: http://antiqueradios.com/forums/viewtopic.php?t=127105 The thing about these 3 radios is, they were all built in the Hallicrafters factory, and none of them have the typical McMurdo Silver tag on the rear of the chassis. They do have Hallicrafters tags under their chassis. All have very similar Hallicrafters serial numbers: H-80934 (Jon's), H-83995 (mine), and H-84028 (Bruce's). I'm writing to you, to inquire whether you have ever done a timeline of Hallicrafters production in the 1938 timeframe, that could be used to date these radios by their serial numbers? For instance, I have a late-version Hallicrafters SX-17 (with the 6H6 noise limiter) that has an identical-style serial number tag in it as my MPVI. The serial number on the SX-17 is H-94822. If you assume it was built in spring of 1939, and knowing that the Hallicrafters plant opened in April of 1936, then you could conclude very approximately that the factory was making maybe 2700 radios/month over those 34-35 months. That would be about 90 radios/day. Bruce's and my radios could have been built on the same day or subsequent days, since their serial numbers are only 33 apart. Jon's was built about 5 weeks earlier, if the assignment of serial numbers is linear. All 3 of these Silvers would have been built in the mid-Sept. to mid-Oct., 1938, time frame... just before McMurdo Silver closed its doors. I was wondering whether you have any information that might confirm or disprove these very rough guesstimates of dates? Thanks and talk to you soon, Rodney Boleyn Bellevue, WA ---------- Forwarded message ---------- From: Gerry Steffens Date: Sat, Nov 8, 2014 at 7:22 PM Subject: Hallicrafters serial numbers To: hallicrafters at mailman.qth.net Cc: Rodney Boleyn Is there any documentation or knowledge of how Hallicrafters assigned serial numbers? I have a collection of McMurdo Silver radios in addition to the Hallicrafters collection. Hallicrafters began assembling radios for McMurdo Silver in September 1936 which was near the end of the Masterpiece V production. Hallicrafters attached license tags under the McMurdo Silver chassis they assembled. The early Masterpiece VI radios had a paper version of the Hallicrafters license tag with a serial number. Later Masterpiece VIs had metal license tags with serial numbers. Both the paper and metal tags are identical to the metal tag on my SX-28 and tags on other Hallicrafters equipment of that vintage, complete with the preprinted "h" followed by a number. Is there a connection of the serial numbers to when the unit was assembled? If so, do we know what that connection is? Do we know when they switched to metal tags from paper? A variant of the Masterpiece VI has surfaced. We know of three of them, I have one. I am attempting to determine when they were produced as there is no Silver documentation of any such variant. Were these early pre-production models? Late production modifications? Or what? After the Silver bankruptcy in November 1938, Davega City of New York bought the inventory of hardware and continued to sell Masterpiece VI and 15-17 radios into 1941. Might these radios be of that genre? Or, Radio News magazine published one ad for the 1939 Masterpiece, actually after the Silver shutdown. Could these radios be a planned 1939 version? If there is any knowledge of Hallicrafters serial numbers, it might be helpful in finding answers to these questions. Thanks for any assistance, Gerry Gerald L Steffens P.E. Oronoco MN Radio Historian, collecting & restoring E.H. Scott, Heath, McMurdo Silver, Hallicrafters, National, Zenith Transoceanic & any other interesting radios & classic Oldsmobiles Collections stand at about 300 radios, 5 Oldsmobiles & a 1950 GMC long bed 1/2 ton From r390a.urr at gmail.com Tue Nov 11 14:19:39 2014 From: r390a.urr at gmail.com (Dave Merrill) Date: Tue, 11 Nov 2014 13:19:39 -0600 Subject: [Hallicrafters] [ARC5] Englewood Colo Craigslist In-Reply-To: <8D1CB48FCBE201E-834-439E@webmail-va174.sysops.aol.com> References: <8D1CB48FCBE201E-834-439E@webmail-va174.sysops.aol.com> Message-ID: I met up with Paul (the seller) when I was in Denver in September. Very nice fellow to deal with. These are items he inherited from his uncle and they are in a storage locker. Paul is not a ham but he knows audio gear. Be aware that some of the items in the photos are sold and gone, but he had a pretty good pile left when I was there. I picked up two HRO-60 coils for broadcast band coverage, a like new HRO-60 speaker and a speaker for an HRO-5. He's not giving the stuff away but I thought the price we negotiated was very fair. Dave N9ZC On Mon, Nov 10, 2014 at 4:01 PM, wrote: > http://denver.craigslist.org/ele/4709589002.html > > Looks like a lot of neat stuff. Says he's willing to ship purchases. > > Wayne > WB4OGm > ______________________________________________________________ > ARC5 mailing list > Home: http://mailman.qth.net/mailman/listinfo/arc5 > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:ARC5 at mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > From radio at daileyservices.com Tue Nov 11 18:30:09 2014 From: radio at daileyservices.com (radio at daileyservices.com) Date: Tue, 11 Nov 2014 16:30:09 -0700 Subject: [Hallicrafters] FS R-42 Reproducer References: Message-ID: Sale - Hallicrafters R-42 "Reproducer" - works, case intact - no dents or prangs, but a few pings in the paint - $50. Contact Robert KC0VRH - robert.fireguy at gmail.com Tom - W0EAJ --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From larry112249 at mindspring.com Wed Nov 12 13:29:45 2014 From: larry112249 at mindspring.com (Larry Young) Date: Wed, 12 Nov 2014 10:29:45 -0800 Subject: [Hallicrafters] Model 117B Special Scintillator Message-ID: <000d01cffea6$a2be7210$e83b5630$@com> Once again I am seeking the individual who restores/repairs Geiger Counters. I apologize, I thought I had retained his contact information and am embarrassed to say I cannot find it. Larry Young Ventura, CA From k1lky68 at gmail.com Wed Nov 12 15:51:46 2014 From: k1lky68 at gmail.com (Roy Morgan) Date: Wed, 12 Nov 2014 15:51:46 -0500 Subject: [Hallicrafters] Old HRO: Was: [ARC5] Englewood Colo Craigslist In-Reply-To: References: <8D1CB48FCBE201E-834-439E@webmail-va174.sysops.aol.com> Message-ID: <2A877A69-452B-43FC-B0CE-E703CB540564@gmail.com> was On Nov 11, 2014, at 2:19 PM, Dave Merrill wrote: > I picked up two HRO-60 coils for broadcast band coverage, a like new HRO-60 > speaker and a speaker for an HRO-5. On the Craig?s listing he shows a link to photos: https://www.flickr.com/photos/65027490 at N07/sets/72157628932413723/ There I see at least one VERY nice looking HRO receiver - the old one. There was a very old HRO at my college radio club, (Tufts, circa 1964). I seem to remember that it was unfinished aluminum. Does anyone know if they made them without paint? Roy Roy Morgan RoyMorgan at alum.mit.edu K1LKY Since 1958 From cateswa at msn.com Fri Nov 14 13:08:13 2014 From: cateswa at msn.com (Walt Cates) Date: Fri, 14 Nov 2014 12:08:13 -0600 Subject: [Hallicrafters] O'Malley's axiom to Murphy's law. Message-ID: I received an email from a fellow who had read one of the documents I had posted. In the document I had referred to O'Malley's axiom to Murphy's law. He said he knew what Murphy's law states, but he had never heard of O'Malley's axiom. O'Malley's axiom simply states that Murphy was an optimist. Best Regards, Walt Cates, WD0GOF A generous person will prosper; whoever refreshes others will be refreshed. From rbethman at comcast.net Fri Nov 14 15:49:45 2014 From: rbethman at comcast.net (rbethman) Date: Fri, 14 Nov 2014 15:49:45 -0500 Subject: [Hallicrafters] O'Malley's axiom to Murphy's law. In-Reply-To: References: Message-ID: <54666AE9.8050602@comcast.net> All, While I was in uniform, we named that as "O'toole's Law". It stated the same thing! O'toole's Law: Murphy was an optimist. Never has a truer statement been made! Regards, Bob - N0DGN On 11/14/2014 1:08 PM, Walt Cates wrote: > I received an email from a fellow who had read one of the documents I had posted. In the document I had referred to O'Malley's axiom to Murphy's law. He said he knew what Murphy's law states, but he had never heard of O'Malley's axiom. > > O'Malley's axiom simply states that Murphy was an optimist. > > Best Regards, Walt Cates, WD0GOF From hallicrafters at mailman.qth.net Fri Nov 14 17:33:09 2014 From: hallicrafters at mailman.qth.net (ron via Hallicrafters) Date: Fri, 14 Nov 2014 17:33:09 -0500 Subject: [Hallicrafters] O'Malley's axiom to Murphy's law. In-Reply-To: References: Message-ID: <8D1CE721A213D62-C6C-20D39@webmail-va037.sysops.aol.com> Walt, I have to agree. You know you're getting desperate, when you drop a screw and after looking 'forever', you drop another to find the first! ha ha ron N4UE (btw, I always find the screw the next day) -----Original Message----- From: Walt Cates To: hallicraftersradios ; hallicrafters Sent: Fri, Nov 14, 2014 3:19 pm Subject: [Hallicrafters] O'Malley's axiom to Murphy's law. I received an email from a fellow who had read one of the documents I had posted. In the document I had referred to O'Malley's axiom to Murphy's law. He said he knew what Murphy's law states, but he had never heard of O'Malley's axiom. O'Malley's axiom simply states that Murphy was an optimist. Best Regards, Walt Cates, WD0GOF A generous person will prosper; whoever refreshes others will be refreshed. ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From magnuson at mac.com Sat Nov 15 10:35:04 2014 From: magnuson at mac.com (Waldo Magnuson) Date: Sat, 15 Nov 2014 07:35:04 -0800 Subject: [Hallicrafters] Rectifier replacement Message-ID: Hi, I've used several Weber CopperCap SS replacements for 5Z3 (SX-28) and other Hallicrafters boat anchors to reduce the heat and strain on the power transformer. Recently I had a CopperCap short and blow fuses. Weber is graciously replacing it but the tech expressed concern over the "high voltages" in the vacuum tube outfits. My question is; have any of used anything else, constructed your own, have used Webers, or what? Thanks. Skip Magnuson. W7WGM Spokane, WA From hallicrafters at mailman.qth.net Sat Nov 15 11:57:28 2014 From: hallicrafters at mailman.qth.net (Greg Gore via Hallicrafters) Date: Sat, 15 Nov 2014 11:57:28 -0500 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: References: Message-ID: <8D1CF0C5F2D65F0-2904-27EB6@webmail-m233.sysops.aol.com> The Weber tech is probably right when you add together the higher input line voltage of today and the higher B+ the Weber solid state rectifier produces. I've had good results running old equipment on 110V through a variac which reduces power transformer stress and a great deal of excess heat which would otherwise be produced from the 120 and higher input volts. The Weber would certainly be useful for bringing up a long dormant receiver on a variac though because it will conduct B+ at low voltage settings where a vacuum tube rectifier will not. Greg WA1KBQ -----Original Message----- From: Waldo Magnuson To: hallicrafters Sent: Sat, Nov 15, 2014 10:35 am Subject: [Hallicrafters] Rectifier replacement Hi, I've used several Weber CopperCap SS replacements for 5Z3 (SX-28) and other Hallicrafters boat anchors to reduce the heat and strain on the power transformer. Recently I had a CopperCap short and blow fuses. Weber is graciously replacing it but the tech expressed concern over the "high voltages" in the vacuum tube outfits. My question is; have any of used anything else, constructed your own, have used Webers, or what? Thanks. Skip Magnuson. W7WGM Spokane, WA ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From radio at daileyservices.com Sat Nov 15 10:33:59 2014 From: radio at daileyservices.com (radio at daileyservices.com) Date: Sat, 15 Nov 2014 08:33:59 -0700 Subject: [Hallicrafters] Murphy, O'Malley, & Sod References: Message-ID: <4C8F1F08D3B547F28F94A2A59AEC99DD@w0eaj> My good friend Ron (Capt USAF - A1 pilot) said it was "Sod's Law", but yes, I'd heard of O'Malley in the Navy. Tom - W0EAJ --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From jpinner33 at att.net Sat Nov 15 13:23:18 2014 From: jpinner33 at att.net (Joseph Pinner) Date: Sat, 15 Nov 2014 13:23:18 -0500 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: <8D1CF0C5F2D65F0-2904-27EB6@webmail-m233.sysops.aol.com> References: <8D1CF0C5F2D65F0-2904-27EB6@webmail-m233.sysops.aol.com> Message-ID: <54679A16.3000107@att.net> I do the same here. My boatanchors run fron a variac at 110V. I do believe it helps extend the life of tubes and components. On 11/15/2014 11:57 AM, Greg Gore via Hallicrafters wrote: > The Weber tech is probably right when you add together the higher input line voltage of today and the higher B+ the Weber solid state rectifier produces. I've had good results running old equipment on 110V through a variac which reduces power transformer stress and a great deal of excess heat which would otherwise be produced from the 120 and higher input volts. -- Joseph Pinner Kingston, TN KC5IJD Roane County OES 408 From 1oldlens1 at ix.netcom.com Mon Nov 17 00:06:58 2014 From: 1oldlens1 at ix.netcom.com (Richard Knoppow) Date: Sun, 16 Nov 2014 21:06:58 -0800 Subject: [Hallicrafters] Rectifier replacement References: <8D1CF0C5F2D65F0-2904-27EB6@webmail-m233.sysops.aol.com> <54679A16.3000107@att.net> Message-ID: <79660D7E44274688B4776981B21F95C4@VALUED20606295> ----- Original Message ----- From: "Joseph Pinner" To: Sent: Saturday, November 15, 2014 10:23 AM Subject: Re: [Hallicrafters] Rectifier replacement >I do the same here. My boatanchors run fron a variac at >110V. > > I do believe it helps extend the life of tubes and > components. > > On 11/15/2014 11:57 AM, Greg Gore via Hallicrafters wrote: >> The Weber tech is probably right when you add together >> the higher input line voltage of today and the higher B+ >> the Weber solid state rectifier produces. I've had good >> results running old equipment on 110V through a variac >> which reduces power transformer stress and a great deal >> of excess heat which would otherwise be produced from the >> 120 and higher input volts. > > -- > Joseph Pinner > Kingston, TN > The difference in voltage when using a solid state rectifier in place of a vacuum tube one is considerable. Its difficult to state a definite value because vacuum tube diodes are not linear resistors but for argument's sake lets say you have a normal B+ of about 300 volts you may find it as high as 350 or 400 volts. Where the current demand is fairly constant you can correct for this with a fixed power resistor in series with the rectifier. Since the tube is a non-linear resistor a regular resistor will correct the voltage for only one value of current but will be close enough for most cases. Where one is replacing a mercury vapor or gas rectifier the problem is somewhat simpler because mercury, gas, and SS rectifiers have a constant voltage drop. For a mercury vapor rectifier its about 15 volts regardless of current demand and I think the gas tubes are about the same. Since silicon diodes have something on the order of one volt drop one can string a series of diodes to get the same drop as the tube. Not a problem because the diodes are cheap and you need the high voltage capability anyway. Probably the most practical method of correcting for high line voltage is to use a bucking transformer. There are several articles on the web on how to do this. Most ham equipment was designed when standard supply voltage was about 115 volts, at least in the U.S. Currently (no pun intended) line voltage in many places is as high as 125 volts. Depending on the average line voltage a 6 or 12 volt filament transformer will work well as a bucking transformer. Ideally, one could use a line voltage regulator. There have been two types in general use, the first is the mechanical type made by General Radio among others. This is a motorized Variac with a control circuit. The response time is very fast and the output has no distortion and has approximately the overall efficiency of the Variac. The other type is the Ferro-resonant type such as the well-known Sola constant voltage transformer. Sola type transformers work very well and have the advantage of being very good line transient filters. They also shut down if the secondary is shorted so provide some degree of protection. The older ones produced a lot of distortion of the output wave but newer ones put out a reasonably pure sine wave. The other problem is that they tend to be noisy, run hot, and are not terribly efficient especially when running at minimum load. They are best when they run under at least half load all the time. Nonetheless, they turn up on the used market fairly often at reasonable prices and work very well. A word of caution: test any Sola or other brand of CVT before buying it. Sometimes the capacitors go bad and I have also had Solas that did not regulate very well despite replacing the caps. I don't know what the other problem is but suspect it may have something to do with the laminations being displaced. -- Richard Knoppow Los Angeles WB6KBL dickburk at ix.netcom.com From hallicrafters at mailman.qth.net Mon Nov 17 00:17:56 2014 From: hallicrafters at mailman.qth.net (Chris Farley via Hallicrafters) Date: Mon, 17 Nov 2014 05:17:56 +0000 (UTC) Subject: [Hallicrafters] Rectifier replacement In-Reply-To: References: Message-ID: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> There was a thread on those "Coppercap" rectifiers some time ago in a different group, I'll be darned if I can find it now.? From what I remember, PIV of the diodes they use can't hold up to the HV found in most boatanchor transmitters.? Someone dissected one which had let the smoke out, and confirmed this.? For guitar amps or receivers with B+ of say 500v or less they're fine, but for (example) a HT-32/37 running more like 800-1000v, they're no bueno.? I would build my own in a tube base.? The higher voltage realized by switching to solid state rectifier is valid, make sure you're not exceeding the voltage rating of filter caps, etc as others have suggested. Regards, Chris From: Waldo Magnuson To: hallicrafters at mailman.qth.net Sent: Saturday, November 15, 2014 9:35 AM Subject: [Hallicrafters] Rectifier replacement Hi,? I've used several Weber CopperCap SS replacements for 5Z3 (SX-28) and other Hallicrafters boat anchors to reduce the heat and strain on the power transformer.? Recently I had a CopperCap short and blow fuses.? Weber is graciously replacing it but the tech expressed concern over the "high voltages" in the vacuum tube outfits. ? My question is; have any of used anything else, constructed your own, have used Webers, or what?? Thanks. Skip Magnuson. W7WGM Spokane, WA ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From k7sz at live.com Mon Nov 17 00:48:53 2014 From: k7sz at live.com (Rich Arland) Date: Mon, 17 Nov 2014 00:48:53 -0500 Subject: [Hallicrafters] New to the list Message-ID: I just joined this list after about a 10 yr hiatus. Got some Halli gear to restore and off-load, so I thought I'd hang out here and absorb the corporate knowledge of this group. Current Halli gear to restor: SR-160 (2 each) SR-150 (1 each) FMP-300 (1 each) PSU 150/120 (1 each) Gear I'm looking for (to keep) SX-117 HT-44 I have restored three of these complete stations (sans HT-45) and let them all go to good homes. Now I find, in my later ham radio years, I'd like to have one to keep. This was my old college club station (including the HT-45) so I'm kinda fond of that vintage and style. Vy 73 Rich Arland K7SZ WPE7BYR Bent Dipole Ranch, Dacula, GA Author: "The ARRL's Low Power Communications, the Art and Science of QRP" (all 4 editions) Blog: http://commobunker.blogspot.com/ "Faith is not about everything turning out OK. It's about being OK, no matter how things turn out." "Every day we are given the opportunity to sign our name to history", Gen. Mark A. Welsh III, Chief of Staff, USAF "Ideals are peaceful. History is violent", Ssgt Don "Wardaddy" Collier, 2nd Armored Division, US Army From radio at daileyservices.com Mon Nov 17 00:51:05 2014 From: radio at daileyservices.com (radio at daileyservices.com) Date: Sun, 16 Nov 2014 22:51:05 -0700 Subject: [Hallicrafters] AC voltage input References: Message-ID: <6FB873B2929444CD8C1DEB7D92498227@w0eaj> Indeed.. definately indicated (for earlier radios) is the use of a Variac for lower AC input voltages (as espoused by several, thus far), OR with a bucking xfmr - ELECTRIC RADIO had a nice article about them last year. In my commercial Fire Alarm business, I've measured line voltages as high as 131.4 vac. Tom - W0EAJ --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com From k9cox at charter.net Mon Nov 17 03:58:09 2014 From: k9cox at charter.net (Ross Stenberg) Date: Mon, 17 Nov 2014 02:58:09 -0600 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> References: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> Message-ID: <248E943568B24CD18A4E4B0DCAF3DE19@RossFlexSDR> 1N4007 1000V PIV 1 amp diodes will set you back about 9 cents each if you pay full retail. From w4bws1 at gmail.com Mon Nov 17 08:34:48 2014 From: w4bws1 at gmail.com (Don Sanders) Date: Mon, 17 Nov 2014 08:34:48 -0500 Subject: [Hallicrafters] New to the list In-Reply-To: References: Message-ID: Welcome back Rich. Yes, the Ht44/HT45 are fine pieces, I had the SX101 with mine. I restored a SR150 and several Ht37s, SX111, SX99 and SX100s and had them adoopted to fine homes. Regretably I had to sell my personal SX100 I got new in 1957, I believe, when I moved to Ecuador. Enjoy your old beauties. Dr. Don HC4/W4BWS On Mon, Nov 17, 2014 at 12:48 AM, Rich Arland wrote: > I just joined this list after about a 10 yr hiatus. Got some Halli gear to > restore and off-load, so I thought I'd hang out here and absorb the > corporate knowledge of this group. > > Current Halli gear to restor: > > SR-160 (2 each) > SR-150 (1 each) > FMP-300 (1 each) > PSU 150/120 (1 each) > > Gear I'm looking for (to keep) > > SX-117 > HT-44 > > I have restored three of these complete stations (sans HT-45) and let them > all go to good homes. Now I find, in my later ham radio years, I'd like to > have one to keep. This was my old college club station (including the > HT-45) so I'm kinda fond of that vintage and style. > > Vy 73 > Rich Arland > K7SZ > WPE7BYR > Bent Dipole Ranch, Dacula, GA > > Author: "The ARRL's Low Power Communications, the Art and Science of QRP" > (all 4 editions) > > Blog: http://commobunker.blogspot.com/ > > "Faith is not about everything turning out OK. It's about being OK, no > matter > how things turn out." > > "Every day we are given the opportunity to sign our name to history", Gen. > Mark A. Welsh III, Chief of Staff, USAF > > "Ideals are peaceful. History is violent", Ssgt Don "Wardaddy" Collier, > 2nd Armored Division, US Army > > > > > > > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > From k9sth at sbcglobal.net Mon Nov 17 10:00:21 2014 From: k9sth at sbcglobal.net (Glen Zook) Date: Mon, 17 Nov 2014 07:00:21 -0800 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: <248E943568B24CD18A4E4B0DCAF3DE19@RossFlexSDR> References: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> <248E943568B24CD18A4E4B0DCAF3DE19@RossFlexSDR> Message-ID: <1416236421.53448.YahooMailNeo@web181301.mail.ne1.yahoo.com> And less than 2-cents each if you purchase a quantity of 100 from sources like Mouser. Having them available, at a moment's notice, is, at least to me, a good thing. Glen, K9STH website: http://k9sth.net On Monday, November 17, 2014 2:58 AM, Ross Stenberg wrote: 1N4007 1000V PIV 1 amp diodes will set you back about 9 cents each if you pay full retail. ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From pincon at erols.com Mon Nov 17 10:23:52 2014 From: pincon at erols.com (Charlie T, K3ICH) Date: Mon, 17 Nov 2014 10:23:52 -0500 Subject: [Hallicrafters] Rectifier replacement References: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com><248E943568B24CD18A4E4B0DCAF3DE19@RossFlexSDR> <1416236421.53448.YahooMailNeo@web181301.mail.ne1.yahoo.com> Message-ID: <174A3661C1094488A325EDD795BA1F01@pinnacle05df05> I would add that diode quality now days is such that you don't need all those "balancing" resistors and caps in parallel. Just splurge and add one or two of those terribly expensive 2? diodes in each string. 73, Charlie k3ICH ----- Original Message ----- From: "Glen Zook" To: "Ross Stenberg" ; "Hallicrafters" Sent: Monday, November 17, 2014 10:00 AM Subject: Re: [Hallicrafters] Rectifier replacement > And less than 2-cents each if you purchase a quantity of 100 from sources > like Mouser. Having them available, at a moment's notice, is, at least to > me, a good thing. > > Glen, K9STH > > website: http://k9sth.net > > > On Monday, November 17, 2014 2:58 AM, Ross Stenberg > wrote: > > > > 1N4007 1000V PIV 1 amp diodes will set you back about 9 cents each if you > pay full retail. > > > > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html From hallicrafterssr2000 at k9axn.com Mon Nov 17 10:30:23 2014 From: hallicrafterssr2000 at k9axn.com (Jim Liles) Date: Mon, 17 Nov 2014 09:30:23 -0600 Subject: [Hallicrafters] New to the list In-Reply-To: References: Message-ID: Welcome back Rich, Good luck and let us know as you bring those radios on line. Kindest regards Jim K9AXN -----Original Message----- From: Rich Arland Sent: Sunday, November 16, 2014 11:48 PM To: hallicrafters at mailman.qth.net Subject: [Hallicrafters] New to the list I just joined this list after about a 10 yr hiatus. Got some Halli gear to restore and off-load, so I thought I'd hang out here and absorb the corporate knowledge of this group. Current Halli gear to restor: SR-160 (2 each) SR-150 (1 each) FMP-300 (1 each) PSU 150/120 (1 each) Gear I'm looking for (to keep) SX-117 HT-44 I have restored three of these complete stations (sans HT-45) and let them all go to good homes. Now I find, in my later ham radio years, I'd like to have one to keep. This was my old college club station (including the HT-45) so I'm kinda fond of that vintage and style. Vy 73 Rich Arland K7SZ WPE7BYR Bent Dipole Ranch, Dacula, GA Author: "The ARRL's Low Power Communications, the Art and Science of QRP" (all 4 editions) Blog: http://commobunker.blogspot.com/ "Faith is not about everything turning out OK. It's about being OK, no matter how things turn out." "Every day we are given the opportunity to sign our name to history", Gen. Mark A. Welsh III, Chief of Staff, USAF "Ideals are peaceful. History is violent", Ssgt Don "Wardaddy" Collier, 2nd Armored Division, US Army ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From hallicrafterssr2000 at k9axn.com Mon Nov 17 11:15:20 2014 From: hallicrafterssr2000 at k9axn.com (Jim Liles) Date: Mon, 17 Nov 2014 10:15:20 -0600 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> References: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> Message-ID: <7653ACD14F0946EE8BEFC5A0520CEC31@LILESJLAPTOP> I believe switching to solid state rectifiers in these old radios is not a good idea. The radio is protected from incredibly high B+ by the rectifier tube. The B+ is not supplied to the radio until the tubes are warm enough to present a load for the high voltage. Without that load the B+ will be approximately 30% higher than with load. If you have solid state rectifiers, measure the B+ at turn on and watch it drop as the tubes warm up. Most boat anchors were not designed for that kind of B+. The later tubed radios were designed to use solid state rectifiers i.e. (SR-150, SR-400, and SR-2000). When an SR-2000 is first powered on the B+ will measure at approximately 380 volts and drop to 285 as the tubes warm up but it?s designed for that kind of abuse. If your going to use solid state diodes, do something to quench the over B+ while the tubes are warming. Use a Zener diode sufficiently higher than the design voltage with a load resistor in series to ground for a load that is sufficient to prevent the B+ voltage from exceeding safe design limits. A good Zener clamp for a 185 volt radio is a BZT03C220 by Vishay. Select an appropriate bleeder resistor to mimic the load. The Zener will conduct at 220 volts and the bleeder resistor will limit the current to normal load conditions until the tubes warm up, dropping the voltage below Zener conduction. Kindest regards Jim K9AXN ---Original Message----- From: Chris Farley via Hallicrafters Sent: Sunday, November 16, 2014 11:17 PM To: Hallicrafters Subject: Re: [Hallicrafters] Rectifier replacement There was a thread on those "Coppercap" rectifiers some time ago in a different group, I'll be darned if I can find it now. From what I remember, PIV of the diodes they use can't hold up to the HV found in most boatanchor transmitters. Someone dissected one which had let the smoke out, and confirmed this. For guitar amps or receivers with B+ of say 500v or less they're fine, but for (example) a HT-32/37 running more like 800-1000v, they're no bueno. I would build my own in a tube base. The higher voltage realized by switching to solid state rectifier is valid, make sure you're not exceeding the voltage rating of filter caps, etc as others have suggested. Regards, Chris From: Waldo Magnuson To: hallicrafters at mailman.qth.net Sent: Saturday, November 15, 2014 9:35 AM Subject: [Hallicrafters] Rectifier replacement Hi, I've used several Weber CopperCap SS replacements for 5Z3 (SX-28) and other Hallicrafters boat anchors to reduce the heat and strain on the power transformer. Recently I had a CopperCap short and blow fuses. Weber is graciously replacing it but the tech expressed concern over the "high voltages" in the vacuum tube outfits. My question is; have any of used anything else, constructed your own, have used Webers, or what? Thanks. Skip Magnuson. W7WGM Spokane, WA ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From hallicrafterssr2000 at k9axn.com Mon Nov 17 11:58:12 2014 From: hallicrafterssr2000 at k9axn.com (Jim Liles) Date: Mon, 17 Nov 2014 10:58:12 -0600 Subject: [Hallicrafters] Rectifier replacement In-Reply-To: <7653ACD14F0946EE8BEFC5A0520CEC31@LILESJLAPTOP> References: <957714314.1308764.1416201476976.JavaMail.yahoo@jws10644.mail.bf1.yahoo.com> <7653ACD14F0946EE8BEFC5A0520CEC31@LILESJLAPTOP> Message-ID: <43F3817500344576B11B37EB9FD48E26@LILESJLAPTOP> Heads up, the BZT03C220 zener is a 220v 3 watt diode --- not correct for a 100 watt receiver. Determine the power requirement and select an appropriate 200 or 220 volt diode to handle the load for a radio that has 185 volt B+. Kindest regards Jim K9AXN -----Original Message----- From: Jim Liles Sent: Monday, November 17, 2014 10:15 AM To: Chris Farley ; Hallicrafters Subject: Re: [Hallicrafters] Rectifier replacement I believe switching to solid state rectifiers in these old radios is not a good idea. The radio is protected from incredibly high B+ by the rectifier tube. The B+ is not supplied to the radio until the tubes are warm enough to present a load for the high voltage. Without that load the B+ will be approximately 30% higher than with load. If you have solid state rectifiers, measure the B+ at turn on and watch it drop as the tubes warm up. Most boat anchors were not designed for that kind of B+. The later tubed radios were designed to use solid state rectifiers i.e. (SR-150, SR-400, and SR-2000). When an SR-2000 is first powered on the B+ will measure at approximately 380 volts and drop to 285 as the tubes warm up but it?s designed for that kind of abuse. If your going to use solid state diodes, do something to quench the over B+ while the tubes are warming. Use a Zener diode sufficiently higher than the design voltage with a load resistor in series to ground for a load that is sufficient to prevent the B+ voltage from exceeding safe design limits. A good Zener clamp for a 185 volt radio is a BZT03C220 by Vishay. Select an appropriate bleeder resistor to mimic the load. The Zener will conduct at 220 volts and the bleeder resistor will limit the current to normal load conditions until the tubes warm up, dropping the voltage below Zener conduction. Kindest regards Jim K9AXN ---Original Message----- From: Chris Farley via Hallicrafters Sent: Sunday, November 16, 2014 11:17 PM To: Hallicrafters Subject: Re: [Hallicrafters] Rectifier replacement There was a thread on those "Coppercap" rectifiers some time ago in a different group, I'll be darned if I can find it now. From what I remember, PIV of the diodes they use can't hold up to the HV found in most boatanchor transmitters. Someone dissected one which had let the smoke out, and confirmed this. For guitar amps or receivers with B+ of say 500v or less they're fine, but for (example) a HT-32/37 running more like 800-1000v, they're no bueno. I would build my own in a tube base. The higher voltage realized by switching to solid state rectifier is valid, make sure you're not exceeding the voltage rating of filter caps, etc as others have suggested. Regards, Chris From: Waldo Magnuson To: hallicrafters at mailman.qth.net Sent: Saturday, November 15, 2014 9:35 AM Subject: [Hallicrafters] Rectifier replacement Hi, I've used several Weber CopperCap SS replacements for 5Z3 (SX-28) and other Hallicrafters boat anchors to reduce the heat and strain on the power transformer. Recently I had a CopperCap short and blow fuses. Weber is graciously replacing it but the tech expressed concern over the "high voltages" in the vacuum tube outfits. My question is; have any of used anything else, constructed your own, have used Webers, or what? Thanks. Skip Magnuson. W7WGM Spokane, WA ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From davemarquart at gmail.com Mon Nov 17 12:05:52 2014 From: davemarquart at gmail.com (Dave) Date: Mon, 17 Nov 2014 10:05:52 -0700 Subject: [Hallicrafters] Skyrider 32 Message-ID: I look forward to each discussion here because of the depth of information available. Would anyone have a answer to this question? My Skyrider 32 says exactly that on the face. However, some refer to the receiver as SX 32. I am aware of the "SX" designation by Hallicrafter. What's up? How should one refer to this receiver? 73. Dave Sent from my iPad From 1oldlens1 at ix.netcom.com Mon Nov 17 14:03:58 2014 From: 1oldlens1 at ix.netcom.com (Richard Knoppow) Date: Mon, 17 Nov 2014 11:03:58 -0800 Subject: [Hallicrafters] Skyrider 32 References: Message-ID: ----- Original Message ----- From: "Dave" To: Sent: Monday, November 17, 2014 9:05 AM Subject: [Hallicrafters] Skyrider 32 >I look forward to each discussion here because of the depth >of information available. > > Would anyone have a answer to this question? My Skyrider > 32 says exactly that on the face. However, some refer to > the receiver as SX 32. I am aware of the "SX" > designation by Hallicrafter. What's up? > > How should one refer to this receiver? > > 73. Dave > > Sent from my iPad Hallicrafters used both designations. Its called a Sky Rider, a brand name Hallicraters used for a number of receivers, and its a Model SX-32. Hallicrafters liked to name receivers with Sky as part of the name such as Sky Rider, Sky Champion, Sky Buddy, etc. The S in model numbers probably means "Sky", the X in the model number indicates the receiver has a crystal filter in the IF. Basically, the SX-32 was a simplified version of the SX-28 which was named the Super Sky Rider. The SX-32 does not have the Lamb noise blanker and some other features of the SX-28 and was cheaper. Hallicrafters seems to have marked front panels with both the model name and model number until after WW-2 when the names seem to have been dropped. My S-20R, for instance, has the name "Sky Champion" on the front along with the S-20R. The later version, the S-40/ has the model number but not the name and I don't think Hallicrafters continued the use of names after WW-2 until some of the very late equipment. There is lots of information about Hallicrafters equipment on the web. -- Richard Knoppow Los Angeles WB6KBL dickburk at ix.netcom.com From hallicrafters at mailman.qth.net Mon Nov 17 22:04:21 2014 From: hallicrafters at mailman.qth.net (John via Hallicrafters) Date: Mon, 17 Nov 2014 22:04:21 -0500 Subject: [Hallicrafters] Skyrider 32 Message-ID: <15c28.243c623a.419c1135@aol.com> Mine says SKYRIDER 32 also, but I have always called it an SX-32. Perhaps the confusion stems from the fact that at first glance, it looks like an SX-28 until you notice that "Model SX-28" is not engraved below the word SKYRIDER. I never oaid any attention to that before you brought it up. 73, John, W4AWM In a message dated 11/17/2014 7:05:53 P.M. Eastern Standard Time, davemarquart at gmail.com writes: I look forward to each discussion here because of the depth of information available. Would anyone have a answer to this question? My Skyrider 32 says exactly that on the face. However, some refer to the receiver as SX 32. I am aware of the "SX" designation by Hallicrafter. What's up? How should one refer to this receiver? 73. Dave Sent from my iPad ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From bcarling at cfl.rr.com Tue Nov 18 15:01:53 2014 From: bcarling at cfl.rr.com (bcarling at cfl.rr.com) Date: Tue, 18 Nov 2014 15:01:53 -0500 Subject: [Hallicrafters] FS: Transformers etc. Message-ID: <546BA5B1.15909.6E2F5B@bcarling.cfl.rr.com> FOR SALE: 1) P-1781 Power Transformer for Johnson Viking II Transmitter. Excellent shape with long leads. Primary 120v AC. 1800V CT AC Secondary. QTY 1 available for $45.00 plus shipping. 2) Audio Driver transformer Part No. 51-23 for Heathkit DX100 QTY 1 available for $25.00 plus shipping 3) HV Choke P1783 for Johnson Viking II - 10 Henries at mA. This might also be a Heathkit DX100 HV Choke but they are similar. Qty 1 Available for $32.00 plus shipping 4) Isolation transformer for 120V AC to 120 V AC at 1500 watts - has 12 IEC outlets. Uses standard AC able (included) - will also include two IEC adapters for standard cables. This is a heavy duty industrial grade transformer in a white cabinet. Excellent shape. QTY 1 available for $45.00 plus shipping. 5) HV Capacitor - oil filled, with mounting hardware; 8 uF at 1000V DC by Sprague. Excellent condition. Tested and 100% fine. QTY 1 available for $8.00 plus shipping. Please reply via e-mail to: af4k at hotmail.com 73 - Brian, Af4K Brian Carling, Radio AF4K From dfischer at usol.com Tue Nov 18 21:17:56 2014 From: dfischer at usol.com (Duane Fischer, W8DBF) Date: Tue, 18 Nov 2014 21:17:56 -0500 Subject: [Hallicrafters] New On The HHI Web Site Message-ID: <002201d0039f$0fd2c8e0$f954e8cc@hpdc5100mt> Hi All, Thanks to KA9TMY, Doug Moore for his fantastic contribution to the Hallicrafters web site! Thanks also to our Web Master W5JT, Jim Thayer for posting it. Doug is sharing with us his restoration information for Hallicrafters receivers. He has included both instructional text and detailed drawings. A lot of hard work went into Doug's efforts, so go check them out! www.w9wze.net Duane Fischer, W8DBF - WPE8CXO E-Mail: dfischer at usol.com Hallicrafters web site: www.w9wze.net HHRP web site: hhrp.w9wze.net ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 4189/7984 - Release Date: 10/31/14 Internal Virus Database is out of date. From hallicrafters at mailman.qth.net Wed Nov 19 09:04:28 2014 From: hallicrafters at mailman.qth.net (John King via Hallicrafters) Date: Wed, 19 Nov 2014 06:04:28 -0800 Subject: [Hallicrafters] Origonal color of SX 28 cabinet Message-ID: <1416405868.68779.YahooMailBasic@web160303.mail.bf1.yahoo.com> I own 71 year old SX28 and a 69 year old SX 28A receiver and am trying to determine the original color of the two cabinets for repainting. I have the bottom cover from The SX 28A and the color of the inside of the cover ( side that faced inside) looks as if the cover was originally a shade of blue. The paint isn't bright blue and is smooth with no texture such as wrinkle or grainy texture. Both of my cabinets have badly faded paint with no rust, but splotches of weathered or worn off paint. The front panels appear very nice and good condition except for needing a good cleaning and enhancing the red and silver lettering with the sticks for that purpose. Does anyone on the list have an SX 28 or SX 28A with the original paint that is in good enough shape to tell what color the cabinets were? I have read many pages of the articles detailing the restoration of SX 28s but have not gotten a clear picture of the original paint on the receiver cabinets. I have seen everything from light to medium gray and some shade of blue. While my cabinets have paint weathered smooth by time and use, I have a feeling that the SX 28 cabinets were NOT smooth textured. I have seen where the color of the R12 speaker (bass reflex wood cabinet) was supplied wit a "gun metal blue" finish If anyone has first hand knowledge of what the color and texture was originally, please email me and tell me about it. If anyone has a good color photo of an SX28 showing color and texture as original, I would greatly appreciate having a look at it. Somewhere there must be a pristine SX 28 that looks almost original. The benefit of your first hand knowledge and experience will be greatly appreciated. Thanks and 73, John, K5PGW From anchor at ec.rr.com Thu Nov 20 09:31:33 2014 From: anchor at ec.rr.com (Al Parker) Date: Thu, 20 Nov 2014 09:31:33 -0500 Subject: [Hallicrafters] Original color of SX 28 cabinet In-Reply-To: <1416405868.68779.YahooMailBasic@web160303.mail.bf1.yahoo.com> References: <1416405868.68779.YahooMailBasic@web160303.mail.bf1.yahoo.com> Message-ID: <546DFB45.8020207@ec.rr.com> Hi John, I don't believe anyone can answer your question, if "--anyone has first hand knowledge of what the color and texture was originally,--" original was 70+ yrs ago. I think you have the answer in your hands. Here what I did, almost 15 yrs ago: "the cabinet and speaker were painted with a custom blended match to the best unfaded area of a bottom panel, a bluish gray" You can see that, and pix of the result at but your screen might show it differently than that of others. I think that sample is about the best you can find, but even that painted area probably has changed since it was original. Nobody's going to be able to tell you that you've got the wrong shade, they can't prove just what it did look like 70 yrs ago. Use what suits you, you're the judge. 73, Al, W8UT www.boatanchors.org www.hammarlund.info "There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats" Ratty, to Mole On 11/19/2014 9:04 AM, John King via Hallicrafters wrote: > I own 71 year old SX28 and a 69 year old SX 28A receiver and am trying to determine the original color of the two cabinets for repainting. I have the bottom cover from The SX 28A and the color of the inside of the cover ( side that faced inside) looks as if the cover was originally a shade of blue. The paint isn't bright blue and is smooth with no texture such as wrinkle or grainy texture. Both of my cabinets have badly faded paint with no rust, but splotches of weathered or worn off paint. > > The front panels appear very nice and good condition except for needing a good cleaning and enhancing the red and silver lettering with the sticks for that purpose. > > Does anyone on the list have an SX 28 or SX 28A with the original paint that is in good enough shape to tell what color the cabinets were? I have read many pages of the articles detailing the restoration of SX 28s but have not gotten a clear picture of the original paint on the receiver cabinets. I have seen everything from light to medium gray and some shade of blue. While my cabinets have paint weathered smooth by time and use, I have a feeling that the SX 28 cabinets were NOT smooth textured. I have seen where the color of the R12 speaker (bass reflex wood cabinet) was supplied wit a "gun metal blue" finish > > If anyone has first hand knowledge of what the color and texture was originally, please email me and tell me about it. If anyone has a good color photo of an SX28 showing color and texture as original, I would greatly appreciate having a look at it. Somewhere there must be a pristine SX 28 that looks almost original. > > The benefit of your first hand knowledge and experience will be greatly appreciated. Thanks and 73, John, K5PGW > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > From k9sth at sbcglobal.net Thu Nov 20 10:09:08 2014 From: k9sth at sbcglobal.net (Glen Zook) Date: Thu, 20 Nov 2014 07:09:08 -0800 Subject: [Hallicrafters] Original color of SX 28 cabinet In-Reply-To: <546DFB45.8020207@ec.rr.com> References: <1416405868.68779.YahooMailBasic@web160303.mail.bf1.yahoo.com> <546DFB45.8020207@ec.rr.com> Message-ID: <1416496148.15182.YahooMailNeo@web181306.mail.ne1.yahoo.com> I try to find somewhere, on the cabinet, that has been in contact with the chassis, etc., and has not been exposed to light, etc., to have "computer matched". That area can be considerably different from what the outer cabinet color has become. I have a local Sherwin-Williams store that does an excellent job of getting the color matched. Although I have not had to have the SX-28 colors matched, I have had a number of "boat anchor" cabinet paints matched. The "formula" for those can be found in the article at: http://nebula.wsimg.com/94662f1b14642593d71fa3dd7f9649a1?AccessKeyId=5DDC3F25F0398F58962E&disposition=0&alloworigin=1 Please note that all of these formulas EXCEPT for the Collins S-Line cabinet are for 1-quart. The S-Line cabinet formula is for 1-gallon. However, a good paint store can adjust the formula for only 1-quart. Also, any good paint store can use the formulas, not just Sherwin-Williams. Frankly, I have not had good experiences with home improvement centers, Walmart, etc., where getting "spot on" color matches are concerned. A specialty paint store is going to generally do a much better job of matching the color, texture, etc. Glen, K9STH website: http://k9sth.net On Thursday, November 20, 2014 8:32 AM, Al Parker wrote: Hi John, I don't believe anyone can answer your question, if "--anyone has first hand knowledge of what the color and texture was originally,--" original was 70+ yrs ago. I think you have the answer in your hands. Here what I did, almost 15 yrs ago: "the cabinet and speaker were painted with a custom blended match to the best unfaded area of a bottom panel, a bluish gray" You can see that, and pix of the result at but your screen might show it differently than that of others. I think that sample is about the best you can find, but even that painted area probably has changed since it was original. Nobody's going to be able to tell you that you've got the wrong shade, they can't prove just what it did look like 70 yrs ago. Use what suits you, you're the judge. 73, Al, W8UT www.boatanchors.org www.hammarlund.info "There is nothing -- absolutely nothing -- half so much worth doing as simply messing about in boats" Ratty, to Mole On 11/19/2014 9:04 AM, John King via Hallicrafters wrote: > I own 71 year old SX28 and a 69 year old SX 28A receiver and am trying to determine the original color of the two cabinets for repainting. I have the bottom cover from The SX 28A and the color of the inside of the cover ( side that faced inside) looks as if the cover was originally a shade of blue. The paint isn't bright blue and is smooth with no texture such as wrinkle or grainy texture. Both of my cabinets have badly faded paint with no rust, but splotches of weathered or worn off paint. > > The front panels appear very nice and good condition except for needing a good cleaning and enhancing the red and silver lettering with the sticks for that purpose. > > Does anyone on the list have an SX 28 or SX 28A with the original paint that is in good enough shape to tell what color the cabinets were? I have read many pages of the articles detailing the restoration of SX 28s but have not gotten a clear picture of the original paint on the receiver cabinets. I have seen everything from light to medium gray and some shade of blue. While my cabinets have paint weathered smooth by time and use, I have a feeling that the SX 28 cabinets were NOT smooth textured. I have seen where the color of the R12 speaker (bass reflex wood cabinet) was supplied wit a "gun metal blue" finish > > If anyone has first hand knowledge of what the color and texture was originally, please email me and tell me about it. If anyone has a good color photo of an SX28 showing color and texture as original, I would greatly appreciate having a look at it. Somewhere there must be a pristine SX 28 that looks almost original. > > The benefit of your first hand knowledge and experience will be greatly appreciated. Thanks and 73, John, K5PGW > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Hallicrafters mailing list Home: http://mailman.qth.net/mailman/listinfo/hallicrafters Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Hallicrafters at mailman.qth.net List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html From ncgilder at tesco.net Sun Nov 23 03:26:46 2014 From: ncgilder at tesco.net (Nick) Date: Sun, 23 Nov 2014 08:26:46 +0000 Subject: [Hallicrafters] New member -help with SX24 please Message-ID: <1416731206.2751.13.camel@main-computer> Hello Although I've had vintage radios for a number of years it is only recently that I have acquired my first Hallicrafters a SX24 which I intend to restore as original as possible. For a 70 odd year old set it still works well but has had several alterations over the years including a new output transformer (seem fairly common) and has had its first bottle replaced with what looks like a ECC82 ( less common I think). Although I have a circuit diagram and service instructions I was a little surprised to find that neither quotes typical voltages for the tubes. Was this practice normal for Hallicrafters or have I missed something? Either way could some kind sole tell me what the voltages should be? Just for clarification, being in the UK my set has the "universal" mains transformer which I don't think should make any difference - but I've been wrong before. Many thanks Nick From w4hqf at att.net Tue Nov 25 01:18:06 2014 From: w4hqf at att.net (w4hqf) Date: Mon, 25 Nov 2014 06:18:06 +0000 Subject: [Hallicrafters] =?iso-8859-1?q?FW=3Apepemartinez7?= Message-ID: http://www.villa-shanti.be/dpjcd/dsetucwrqohracysh.jyodczmschjwyyqxg w4hqf at att.net 11/25/2014 6:18:06 AM From hallicrafters at mailman.qth.net Wed Nov 26 00:08:53 2014 From: hallicrafters at mailman.qth.net (lane denune via Hallicrafters) Date: Wed, 26 Nov 2014 05:08:53 +0000 (UTC) Subject: [Hallicrafters] New Guy & HT-37 Message-ID: <968044427.706799.1416978533636.JavaMail.yahoo@jws10095.mail.ne1.yahoo.com> Hello Group ; Am new to Hallicrafters gear and am restoring an HT-37 that is in operating condition with some minor exceptions, hi.?I work mainly CW and am interested in where to find info for the QSK modification I have read about for these transmitters. I have to imagine it was in a back issue of QST. ?Thanks for having me and 73 from Lane in Ohio.? de n8aft? sk? .. From karinann at tampabay.rr.com Thu Nov 27 19:23:04 2014 From: karinann at tampabay.rr.com (Karin Johnson) Date: Thu, 27 Nov 2014 19:23:04 -0500 Subject: [Hallicrafters] New Guy & HT-37 Message-ID: <411A51D1B0FF4BBD9B07F83FD9D215A8@karinspc> I did a search for HT-37 and QSK and came up with a link to a file on the BAMA site. After looking at that link schematic it appears that this mod incorporates the circuit from the HT-32B into the HT-37. In my opinion it does not really provide a full QSK type of operation. YMMV. I designed and laid out a PCB for a true QSK for my HT-32B based upon an old QSK article for a Collins S-Line years ago. My design uses an external vacuum relay and has circuitry to set up the timing so the transmitter does not "HOT KEY" the relay. It requires a bit of modification, although not complicated, to the HT-32B. So for the purist this may not be acceptable, but the modifications can be easily retrofitted. I'm not in the business of selling these things but if you're interested I can you an Extra board I have plus a BOM. I was considering doing a newer version to make it easier to install and retrofit, but never got around to doing this due to other priorities. Karin K3UU Palm Harbor, FL From bcarling at cfl.rr.com Sat Nov 29 06:05:23 2014 From: bcarling at cfl.rr.com (bcarling at cfl.rr.com) Date: Sat, 29 Nov 2014 06:05:23 -0500 Subject: [Hallicrafters] HAM XTALS: Cyber Monday comes early Message-ID: <5479A873.15607.509666@bcarling.cfl.rr.com> For Sale: Amateur Band Crystal Deals for CYBER MONDAY. Beginning now through Midnight DEC 1 we have amateur band FT243 and hc49 crystals for sale from $3.00 to $7.00 each. Some hc6u as low as $2.00 each. These are primarily 80m and 40m band crystals. http://af4k.com/CyberMondaySpecials.htm See you on the air! 73 de AF4K, "Bry" Brian Carling, Radio AF4K From dfischer at usol.com Sun Nov 30 00:50:12 2014 From: dfischer at usol.com (Duane Fischer, W8DBF) Date: Sun, 30 Nov 2014 00:50:12 -0500 Subject: [Hallicrafters] New Guy & HT-37 References: <411A51D1B0FF4BBD9B07F83FD9D215A8@karinspc> Message-ID: <004e01d00c62$cdf04bb0$cf54e8cc@hpdc5100mt> Try doing a search in the Hallicrafters files! You can do it from the Halli web site: www.w9wze.net >From the home page locate the link for the archives and follow the screen prompts. Good luck - ----- Original Message ----- From: "Karin Johnson" To: Sent: Thursday, November 27, 2014 7:23 PM Subject: Re: [Hallicrafters] New Guy & HT-37 >I did a search for HT-37 and QSK and came up with a link to a file on the > BAMA site. > After looking at that link schematic it appears that this mod incorporates > the circuit > from the HT-32B into the HT-37. In my opinion it does not really provide > a > full QSK > type of operation. YMMV. > I designed and laid out a PCB for a true QSK for my HT-32B based upon an > old > QSK > article for a Collins S-Line years ago. My design uses an external vacuum > relay and > has circuitry to set up the timing so the transmitter does not "HOT KEY" > the > relay. > It requires a bit of modification, although not complicated, to the > HT-32B. > So for > the purist this may not be acceptable, but the modifications can be easily > retrofitted. > I'm not in the business of selling these things but if you're interested I > can you an > Extra board I have plus a BOM. I was considering doing a newer version to > make it easier > to install and retrofit, but never got around to doing this due to other > priorities. > > Karin K3UU > Palm Harbor, FL > > > ______________________________________________________________ > Hallicrafters mailing list > Home: http://mailman.qth.net/mailman/listinfo/hallicrafters > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Hallicrafters at mailman.qth.net > > List Administrator: Duane Fischer, W8DBF > ** For Assistance: dfischer at usol.com ** > > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2247 / Virus Database: 4189/7984 - Release Date: 10/31/14 > Internal Virus Database is out of date. > ----- No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 4189/7984 - Release Date: 10/31/14 Internal Virus Database is out of date. From hallicrafters at mailman.qth.net Sun Nov 30 11:25:31 2014 From: hallicrafters at mailman.qth.net (Lee via Hallicrafters) Date: Sun, 30 Nov 2014 11:25:31 -0500 Subject: [Hallicrafters] Looking to buy a Halli HA-20 Message-ID: <8D1DAD164DB8812-F98-35120@webmail-vm103.sysops.aol.com> Anyone have a nice HA-20 I can buy from them....??? Want to add it to my SR-400 73, Lee Lee Simmonds Summit DCS LLC 260-799-4077 Office 260-403-6936 Cell From hallicrafters at mailman.qth.net Sun Nov 30 11:28:29 2014 From: hallicrafters at mailman.qth.net (Lee via Hallicrafters) Date: Sun, 30 Nov 2014 11:28:29 -0500 Subject: [Hallicrafters] Looking for a nice HA-20 Message-ID: <8D1DAD1CF76A93B-F98-35180@webmail-vm103.sysops.aol.com> Hi, Anyone have a nice HA-20 I can buy to add to my SR-400??? Thanks, 73, Lee Lee Simmonds Summit DCS LLC 260-799-4077 Office 260-403-6936 Cell From cateswa at msn.com Sun Nov 30 15:35:06 2014 From: cateswa at msn.com (Walt Cates) Date: Sun, 30 Nov 2014 14:35:06 -0600 Subject: [Hallicrafters] PS-150 Message-ID: I have lost my copy of the TEST SPECIFICATIONS for the PS-150-120 and PS-150-12. Does anyone have a copy??? Best Regards, Walt Cates, WD0GOF A generous person will prosper; whoever refreshes others will be refreshed. From larry112249 at mindspring.com Sun Nov 30 22:52:49 2014 From: larry112249 at mindspring.com (Larry Young) Date: Sun, 30 Nov 2014 19:52:49 -0800 Subject: [Hallicrafters] Hallicrafters in movies Message-ID: <000801d00d1a$46b2d420$d4187c60$@com> Spotted two Hallicrafters in the digital movie "The Adventures of TinTin 2" about 16 minutes in. If anyone is still making note of such. Larry Young Ventura

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