[AMRadio] Thordarson Transformer ID

David Knepper cra at floodcity.net
Wed May 26 21:17:10 EDT 2004

  I measured the transformer this evening and it measures 9 high x 6-1/4
wide x 11 inches deep or long.

  There is no visible holes on the top for fixing an ID plate.

  It is definitely a plate transformer, probably around 2500 volts each side
of center tap with two separate secondary windings.

  Thank you for all you assistance.

  Dave, W3ST
  Secretary to the Collins Radio Association
  Publisher of the Collins Journal
  ----- Original Message -----
  From: "Todd Bigelow - PS" <tbigelow at pop.state.vt.us>
  To: "Discussion of AM Radio" <amradio at mailman.qth.net>
  Sent: Wednesday, May 26, 2004 6:29 PM
  Subject: Re: [AMRadio] Thordarson Transformer ID

  > B. Morgan Sherrod wrote:
  > >
  > >
  > >>Seems a shame these things get hidden inside and seldom seen.
  > >>from a time when craftsmanship ruled the day...
  > >>
  > >>de Todd/'Boomer'  KA1KAQ
  > >>
  > >>
  > >
  > >Thanks Todd.  Hopefully I will get back to rebuilding this transmitter
soon.  Most of the transformers in this rig are
  > >the CHT series, of course this one is the largest.  The audio/modulator
section is primarily UTC stuff.  I have a more
  > >recent T368 plate xfmr I plan to use for the modulators (pair of 849's)
as a separate supply.
  > >
  > >Brian/w5ami
  > >
  > >
  > I remember seeing that rig in ER after it was discovered. Certainly
  > looks like an interesting restoration project. I recall that all of the
  > gear, logbook, etc were still sitting there just as they'd been left
  > decades earlier. Talk about finding a time capsule! Where does one find
  > spare 849s, though?
  > I'm sure folks are looking forward to the day of seeing the finished
  > product. Especially for such a piece of history. Most of us have a few
  > irons in the fire at any given time, so we can relate to the
  > 'eventually' part. The broadcast transmitter project from last summer is
  > still sitting here in the diningroom, waiting to be completed. Good
  > thing I'm single.
  > Best of luck with the Bartlesville project, Brian. Always nice to see
  > these rigs get saved and enjoyed.
  > 73, Todd  KA1KAQ
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