[Milsurplus] Wanted: 838 Tubes

[WA5CAB at cs.com]

John,

I've never seen an 838.  But looking at its specs in an early RCA Air 
Cooled Transmitting Tube manual, it's no pantywaist.  1250 volts on the plate, 
100 watts dissipation.  Power gain of about 35 in push-pull zero-bias Class B 
operation.  There aren't many substitutes in that class.

In a message dated 3/15/2010 4:28:52 PM Central Standard Time, 
jfor at quik.com writes: 
> The Battleship Massachusetts is getting its 1MC (PA System operating) and
> needs some 838 tubes.
> 
> Unfortunately, these seem to be highly coveted by the Audiophools for
> their nutty triode amps, so are hard to get.
> 
> If anybody has any, please drop me a note off-list.
> 
> Also, I've thought about making a plug-in substitute from either a more
> plentiful tube, or even from VMOS transistors.
> 
> Does anybody have thoughts on this approach. Response from DC to X-Band is
> NOT a requirement as with the "golden ears" crowd.
> 
> Best,
> -John
> 

Robert & Susan Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480