Re: [AMRadio] Thordarson Transformer ID
B. Morgan Sherrod wrote: - Original Message - From: "David Knepper" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; Sent: Monday, May 24, 2004 10:37 AM Subject: [AMRadio] Thordarson Transformer ID I have a very large high voltage Thordarson transformer that appears to be a PUV type. There are no identification labels, etc. but the original owner did identify it as a Thordarson. Does it look similar to this one? http://www.arksky.org/temp/01080001.JPG Yeow! Looks like the big brother to the T11M78 300-500w Multi-Match mod transformer I have here. Right down to the nice plated acorn nuts. When you get ready to use it Brian, clean it up with a toothbrush and cleaner, then use some lemon oil on it. Makes the wrinkle paint look like new. Seems a shame these things get hidden inside and seldom seen. Definitely from a time when craftsmanship ruled the day... de Todd/'Boomer' KA1KAQ
Re: [AMRadio] Thordarson Transformer ID
Thanks, Dennis. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com - Original Message - From: <[EMAIL PROTECTED]> To: "Discussion of AM Radio" Sent: Tuesday, May 25, 2004 3:17 PM Subject: Re: [AMRadio] Thordarson Transformer ID > In a message dated 5/25/2004 11:42:51 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: > > > > > > Does it look similar to this one? > > > > > > http://www.arksky.org/temp/01080001.JPG > > > > > Looks just like the Thordarson "CHT" in my 3-1000Z linear that I built about 20 years ago. My unit has small tabs on the secondary terminals identifying the various output voltages. The secondary is 3000 volts CT with taps at 1500, 2000 & 2500 V. It has a dual primary allowing for 115 or 230 vac input. Weighs at least 100 lbs. > > Dennis D. W7QHO > Glendale, CA > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio
Re: [AMRadio] Thordarson Transformer ID
In a message dated 5/25/2004 11:42:51 AM Eastern Daylight Time, [EMAIL PROTECTED] writes: > > > Does it look similar to this one? > > > > http://www.arksky.org/temp/01080001.JPG > > Looks just like the Thordarson "CHT" in my 3-1000Z linear that I built about 20 years ago. My unit has small tabs on the secondary terminals identifying the various output voltages. The secondary is 3000 volts CT with taps at 1500, 2000 & 2500 V. It has a dual primary allowing for 115 or 230 vac input. Weighs at least 100 lbs. Dennis D. W7QHO Glendale, CA
Re: [AMRadio] Thordarson Transformer ID
That seems like the dimensions of mine. Let me check this evening when I go up to the Collins Radio Center. Thank you for all you assistance. Oh, one more thing, when do you suppose this transformer was manufactured? Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com - Original Message - From: "B. Morgan Sherrod" <[EMAIL PROTECTED]> To: "Discussion of AM Radio" Sent: Tuesday, May 25, 2004 12:54 PM Subject: Re: [AMRadio] Thordarson Transformer ID > - Original Message - > From: "David Knepper" <[EMAIL PROTECTED]> > To: "Discussion of AM Radio" > Sent: Tuesday, May 25, 2004 10:42 AM > Subject: Re: [AMRadio] Thordarson Transformer ID > > > > Yes, that is the exact physical size. > > Any more particulars like size, etc. > > > > I could probably match the size with the voltage output. > > > > This unit is a model T-15P2 1690 watts. I can't find it in my old catalog. Also it is called a "Multi Volt" for > various outputs. I also discovered it can run either 120 or 220 volts by moving a tap on the primary side. It is about > 12" long, 7.5" wide and 9" tall. Probably weighs about 90 to 100 lbs. Feels like more with my aching back. > > Preston Gaddis who originally owned the Bartlesville Kilowatt ran a pair of 304TL's, among a few other varieties. > According to log entries, etc., his output was in the KW range, so I suspect he ran around 2800 - 3000vdc on the plates > using this transformer. > > I thought I had the specs on this thing, but can't seem to remember where I saw them. Maybe someone on the list has > them. > > As mentioned by someone else, it would be easy enough to determine the output with some test voltage, however the "Multi > Volt" taps might be difficult to decipher! > > Brian/w5ami > > > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio
Re: [AMRadio] Thordarson Transformer ID
- Original Message - From: "David Knepper" <[EMAIL PROTECTED]> To: "Discussion of AM Radio" Sent: Tuesday, May 25, 2004 10:42 AM Subject: Re: [AMRadio] Thordarson Transformer ID > Yes, that is the exact physical size. > Any more particulars like size, etc. > > I could probably match the size with the voltage output. > This unit is a model T-15P2 1690 watts. I can't find it in my old catalog. Also it is called a "Multi Volt" for various outputs. I also discovered it can run either 120 or 220 volts by moving a tap on the primary side. It is about 12" long, 7.5" wide and 9" tall. Probably weighs about 90 to 100 lbs. Feels like more with my aching back. Preston Gaddis who originally owned the Bartlesville Kilowatt ran a pair of 304TL's, among a few other varieties. According to log entries, etc., his output was in the KW range, so I suspect he ran around 2800 - 3000vdc on the plates using this transformer. I thought I had the specs on this thing, but can't seem to remember where I saw them. Maybe someone on the list has them. As mentioned by someone else, it would be easy enough to determine the output with some test voltage, however the "Multi Volt" taps might be difficult to decipher! Brian/w5ami
Re: [AMRadio] Thordarson Transformer ID
> Working for me... Working now. before, I just got a box, with a red 'x' in it... oh, well 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Thordarson Transformer ID
Yes, that is the exact physical size. Any more particulars like size, etc. I could probably match the size with the voltage output. Thank you. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com - Original Message - From: "B. Morgan Sherrod" <[EMAIL PROTECTED]> To: "AMRadio" Sent: Tuesday, May 25, 2004 11:20 AM Subject: Re: [AMRadio] Thordarson Transformer ID > - Original Message - > From: "David Knepper" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; > Sent: Monday, May 24, 2004 10:37 AM > Subject: [AMRadio] Thordarson Transformer ID > > > > I have a very large high voltage Thordarson transformer that appears to be a PUV type. There are no identification > labels, etc. but the original owner did identify it as a Thordarson. > > > > Does it look similar to this one? > > http://www.arksky.org/temp/01080001.JPG > > I forget the exact specs on this, however I know it is 120v primary and the output is something like 3300vdc ct. This > is the plate xfmr from the "Bartelsville Transmitter" I have. I also have a Thordarson catalog from the late 30's > packed up somewhere. I'll see if I can find it. > > 73 > Brian / w5ami > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio
Re: [AMRadio] Thordarson Transformer ID
- Original Message - From: "B. Morgan Sherrod" <[EMAIL PROTECTED]> To: "AMRadio" Sent: Tuesday, May 25, 2004 10:20 AM Subject: Re: [AMRadio] Thordarson Transformer ID > > I forget the exact specs on this, however I know it is 120v primary and the > output is something like 3300vdc ct. Correction. 3300 vac not vdc ;) Brian
Re: [AMRadio] Thordarson Transformer ID
Working for me... - Original Message - From: "Geoff/W5OMR" <[EMAIL PROTECTED]> To: "Discussion of AM Radio" Sent: Tuesday, May 25, 2004 10:23 AM Subject: Re: [AMRadio] Thordarson Transformer ID > > > I have a very large high voltage Thordarson transformer that appears to > > > be a > PUV type. There are no identification > > labels, etc. but the original owner did identify it as a Thordarson. > > > > > > > Does it look similar to this one? > > > > http://www.arksky.org/temp/01080001.JPG > > > > I forget the exact specs on this, however I know it is 120v primary and the > output is something like 3300vdc ct. This > > is the plate xfmr from the "Bartelsville Transmitter" I have. I also have a > Thordarson catalog from the late 30's > > packed up somewhere. I'll see if I can find it. > > No picture there, Brian... > > I have some that I've taken, however - of the recent (past weekend) Belton > Hamfest... > > http://w5omr.shacknet.nu/~w5omr/hamstuff/belton-may-2004/ > > 73 = Best Regards, > -Geoff/W5OMR > > > ___ > AMRadio mailing list > AMRadio@mailman.qth.net > http://mailman.qth.net/mailman/listinfo/amradio
Re: [AMRadio] Thordarson Transformer ID
> > I have a very large high voltage Thordarson transformer that appears to be a PUV type. There are no identification > labels, etc. but the original owner did identify it as a Thordarson. > > > > Does it look similar to this one? > > http://www.arksky.org/temp/01080001.JPG > > I forget the exact specs on this, however I know it is 120v primary and the output is something like 3300vdc ct. This > is the plate xfmr from the "Bartelsville Transmitter" I have. I also have a Thordarson catalog from the late 30's > packed up somewhere. I'll see if I can find it. No picture there, Brian... I have some that I've taken, however - of the recent (past weekend) Belton Hamfest... http://w5omr.shacknet.nu/~w5omr/hamstuff/belton-may-2004/ 73 = Best Regards, -Geoff/W5OMR
Re: [AMRadio] Thordarson Transformer ID
- Original Message - From: "David Knepper" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; Sent: Monday, May 24, 2004 10:37 AM Subject: [AMRadio] Thordarson Transformer ID > I have a very large high voltage Thordarson transformer that appears to be a > PUV type. There are no identification labels, etc. but the original owner did identify it as a Thordarson. > Does it look similar to this one? http://www.arksky.org/temp/01080001.JPG I forget the exact specs on this, however I know it is 120v primary and the output is something like 3300vdc ct. This is the plate xfmr from the "Bartelsville Transmitter" I have. I also have a Thordarson catalog from the late 30's packed up somewhere. I'll see if I can find it. 73 Brian / w5ami
