Re: [AMRadio] Thordarson Transformer ID
- Original Message - From: Todd Bigelow - PS [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Wednesday, May 26, 2004 5:29 PM Subject: Re: [AMRadio] Thordarson Transformer ID Talk about finding a time capsule! Where does one find spare 849s, though? 833A's. They don't use the same mount of course, but the 849 was pretty much the predecessor of the 833. I'll use the the big bottles until they give out, or me before. -Brian
Re: [AMRadio] Thordarson Transformer ID
- Original Message - From: David Knepper [EMAIL PROTECTED] To: [EMAIL PROTECTED]; amradio@mailman.qth.net 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
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
Working for me... - Original Message - From: Geoff/W5OMR [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net 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
- Original Message - From: B. Morgan Sherrod [EMAIL PROTECTED] To: AMRadio amradio@mailman.qth.net 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
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 amradio@mailman.qth.net Sent: Tuesday, May 25, 2004 11:20 AM Subject: Re: [AMRadio] Thordarson Transformer ID - Original Message - From: David Knepper [EMAIL PROTECTED] To: [EMAIL PROTECTED]; amradio@mailman.qth.net 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
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
- Original Message - From: David Knepper [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net 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
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 amradio@mailman.qth.net 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 amradio@mailman.qth.net 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
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
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 amradio@mailman.qth.net 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
B. Morgan Sherrod wrote: - Original Message - From: David Knepper [EMAIL PROTECTED] To: [EMAIL PROTECTED]; amradio@mailman.qth.net 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
This design was the so-called CHT series from the 1930's. CHT was Mr. Thordarson's initials and these were supposed to be his signature quality transformers. I think I have some info on these. But there was a whole line of them. Without any tag, there is probably no way to ID which one you have except scoping out the windings, applying a test voltage and checking the outputs. Let me know if you want a copy of whatever I have on these. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Knepper Sent: Monday, May 24, 2004 11:38 AM To: [EMAIL PROTECTED]; amradio@mailman.qth.net 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. The end bells have slotted handles to move the transformer around. Never have seen this before. The high voltage connectors are very unusual in that they are meant to be used with plug type connectors that slip into the white porcellin insulators. There are 10 of these, with five in a row vertically. I suspect that this transformer was manufactured in the 1950's or so. The primary side has four terminals. The original owner told me that it was for 120 volts AC. Can anyone help in identifying this unit. Thank you. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com ___ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A)
Re: [AMRadio] Thordarson Transformer ID
Don, thank you for this information. I have several CHT transformers here but nothing like this one. It has no markings whatsoever and that really surprises me. It does resemblem the PUV series. I assume that you will be at Butler, flying about trying to find some nice equipment. Let's hope that it does not rain as it did in Dayton several weeks ago when I was there. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com - Original Message - From: Merz Donald S [EMAIL PROTECTED] To: Discussion of AM Radio amradio@mailman.qth.net Sent: Monday, May 24, 2004 12:00 PM Subject: RE: [AMRadio] Thordarson Transformer ID This design was the so-called CHT series from the 1930's. CHT was Mr. Thordarson's initials and these were supposed to be his signature quality transformers. I think I have some info on these. But there was a whole line of them. Without any tag, there is probably no way to ID which one you have except scoping out the windings, applying a test voltage and checking the outputs. Let me know if you want a copy of whatever I have on these. 73, Don Merz, N3RHT -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of David Knepper Sent: Monday, May 24, 2004 11:38 AM To: [EMAIL PROTECTED]; amradio@mailman.qth.net 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. The end bells have slotted handles to move the transformer around. Never have seen this before. The high voltage connectors are very unusual in that they are meant to be used with plug type connectors that slip into the white porcellin insulators. There are 10 of these, with five in a row vertically. I suspect that this transformer was manufactured in the 1950's or so. The primary side has four terminals. The original owner told me that it was for 120 volts AC. Can anyone help in identifying this unit. Thank you. Dave, W3ST Secretary to the Collins Radio Association Publisher of the Collins Journal www.collinsra.com ___ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio The information contained in this e-mail may be confidential and is intended solely for the use of the named addressee. Access, copying or re-use of the e-mail or any information contained therein by any other person is not authorized. If you are not the intended recipient please notify us immediately by returning the e-mail to the originator.(A) ___ AMRadio mailing list AMRadio@mailman.qth.net http://mailman.qth.net/mailman/listinfo/amradio
