Re: [IRCA] 2 NEAT Transmitter Tubes today @ London, ONTARIO Hamfest.....GE GL-892R and Western Electric 357-A........

["Robert S.Ross VA3SW" <va3sw@xxxxxxxxxx>]

 On 26/09/2010 3:47 PM, Craig Healy wrote:
> > I attended my Hometown Local Hamfest in London, ONTARIO today and 
> > picked up a pair of Great Looking RF TRANSMITTER TUBES......
> >
> > General Electric GL-892-R  5 KW Forced Air Cooled RF Amplifier and 
> > Class B Modulator  (Weighs about 25 Pounds at least!!) Used in 
> > Commercial AM Broadcast Transmitter.
>
> The 892-R was used in a pre-WWII RCA 5DX 5kw AM transmitter.  Also a 
> pair of 891-R tubes.  Probably used in other transmitters as well.  I 
> think they were the first higher power air-cooled tubes.  Previous 
> versions of the same ones were water cooled.  The big glass part and 
> the side grid connection is a very cool sight.
>
> Around 1974 WPRO-630 in Providence, RI updated their transmitters and 
> got rid of the RCA 5-DX they had since 1939.  I removed it and had it 
> stored for a few years.  Finally sold most of it and junked the rest.  
> I do have a few parts left for it in my basement.  Mostly variable 
> capacitors and some coils.
>
> Craig Healy
> Providence, RI



Thanks to everyone for all the information supplied on the 2 Transmitter 
Tubes I obtained yesterday!!  I appreciate the help IDing and helping me 
to understand what these tubes were used for.....

Regards......ROB VA3SW

Robert S. Ross
London, Ontario CANADA
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