[MRCA] wuzzit?

[Mike Feher]

Yes, the UV204A was born in the 20's as a high power triode transmitting
tube. However, the example shown with the aluminum base and Graphite plate
is WWII vintage. 73 - Mike 

 

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

 

From: mrca-bounces at mailman.qth.net <mrca-bounces at mailman.qth.net> On Behalf
Of Ray Fantini
Sent: Friday, February 3, 2023 9:08 AM
To: Jeep Platt <jeepcomms at outlook.com>; Gene Smar <ersmar at verizon.net>;
Military Radio Collectors Association <mrca at mailman.qth.net>
Subject: Re: [MRCA] wuzzit?

 

That's a pre WW2 transmitting triode, think it goes back to around the late
twenties. Used in Westinghouse and RCA broadcast transmitters and is rated
at around 250 watts when used in the PA. they would use four together in a
500 watt transmitter.

Weird trivia! Before deregulation in the seventies the FCC required that you
had to be able to see and directly control the transmitter in a broadcast
station so a lot of the transmitters built from back in the beginning up to
the seventies used huge glass tubes with quiet forced air cooling but after
deregulation most manufactures switched to metal tubes and high volume
forced air cooling that was loud being you no longer had to see the
transmitter when you were on the air.

That's why everyone wants the old Collins, Gates and RCA transmitters for AM
Ham opps but the newer generation of transmitters are not as desired.

 

Ray F/KA3EKH

 

 

From: mrca-bounces at mailman.qth.net <mailto:mrca-bounces at mailman.qth.net>
<mrca-bounces at mailman.qth.net <mailto:mrca-bounces at mailman.qth.net> > On
Behalf Of Jeep Platt
Sent: Thursday, February 2, 2023 9:04 PM
To: Gene Smar <ersmar at verizon.net <mailto:ersmar at verizon.net> >; Military
Radio Collectors Association <mrca at mailman.qth.net
<mailto:mrca at mailman.qth.net> >
Subject: Re: [MRCA] wuzzit?

 

 

Looks like an old X-ray tube I once had.  A curio, to be sure!  K3HVG 

 

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From: mrca-bounces at mailman.qth.net <mailto:mrca-bounces at mailman.qth.net>
<mrca-bounces at mailman.qth.net <mailto:mrca-bounces at mailman.qth.net> > on
behalf of Gene Smar via MRCA <mrca at mailman.qth.net
<mailto:mrca at mailman.qth.net> >
Sent: Thursday, February 2, 2023 9:00:05 PM
To: Military Radio Collectors Association <mrca at mailman.qth.net
<mailto:mrca at mailman.qth.net> >
Subject: [MRCA] wuzzit? 

 

Anybody know for sure what this is? I'm thinking a vacuum cap. 

 

The father (non-ham) of a friend recently died and I'm told had a collection
of old tubes. I've been asked if someone can use them. Not sure if that
means they will be given away or sold but I will be sent more photos of the
collection and will post them here. I'll find out more about the giving vs
selling question for y'all.

 

73 de 

Gene Smar AD3F



 

Sent from my Radio Shack TRS-80 model 100 laptop

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