[Collins] FRT-24 or 431D transmitters

[Dr. David Knepper]

I have had two responses to my query on identifying an early Collins
transmitter.  It is either an FRT-24 or 431D.

Can anyone tell me what either unit looks like.  I am trying to locate
either one for the Collins Radio Center.
All that I can remember is this rather large cabinet unit that used a
4-1000A modulated by, I believe, a pair of 4-400A's.  All pressurized
compartments and front doors.  Dimensions were at least 7 feet tall by 4
feet wide and 4 feet deep, approximately.  I am inclined to say that it was
a 431D series.  Of course, it was manufactured by Collins Radio back in the
60's.  Thank you.

David Knepper - W3ST
Publisher of the Collins Journal
Secretary to the Collins Radio Association
CRA website:  http://www.collinsra.com