[BC] Can someone identify an old Collins 5?

[seaberg1@sbcglobal.net]

Dave
Are you sure it was a Collins ?  Your description somewhat fits that of the 
RCA 5E which used the same tube lineup except it had a blank tube socket 
next to the final rf  892R.  I believe this was to hold another 892R for a 
physically close located standby 892R or for converting to a 10kw power 
level.  Don't know if the power supply had to be up-graded to do this or 
not.
Bob -- W3MDM

----- Original Message ----- 
From: <DHultsman5 at aol.com>
To: <broadcast at radiolists.net>
Sent: Monday, August 14, 2006 12:25 PM
Subject: Re: [BC] Can someone identify an old Collins 5?


>
> In a message dated 8/6/06 1:18:53 PM Central Daylight Time,
> reader at oldradio.com writes:
>
> Hello,  Barry.
>
> Perhaps you could help me on a question:  Back in the early  '70s, I
> worked at a station that had two Collins transmitters.  The  standby
> transmitter was the model 20T, which you have a picture of in your
> Collins section.  Next to it was the 5/10kW version, which looked
> exactly like the 1kW, but was built in 4 cabinets, and used 892R mods
> & finals, and 8008 rectifiers.  All of the tubes were visible  through
> those big cabinet windows, and the rectifiers cast a glow in the  room
> that pulsated with modulation.  It was a very impressive
> installation, especially for a youngster, just getting into the  business.
>
> Since then, I have not been able to find any reference to  that 5kW
> transmitter, either pictures of even the model number.  Do  you have
> any idea what it was?
>
>
>
>
> **********************************
>
> Depending on the model and the photos,  I am guessing that it was a  21B. 
> I
> have send info to Barry on the 21-A and the 21-B  both being 5  kW AM from
> Collins and preceeded the Collins 21E/M.
>
> Dave Hultsman
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