[Milsurplus] 28d7 tube

[Al Klase]

I was confused.  Actually, the output tube in the 392 is a 26A7, a 
similar tube, but with an octal base.  The heater power is even worse. 
it draws 0.6 amps at 26.5 volts.

Apologies for the bum data,
Al

Al Klase wrote:
> Yes, it's used in the R-392.  Dual beam-power tube.  11 watts of heater
> power for 200mW of audio output, but that's what happens when you run
> only 28 volts on the plates.  They run quite hot, and chew themselves
> up.  They're pretty reasonable from AES.
>
> Merry Christmas,
> Al
>
> Rob Flory wrote:
>> Good morning and happy Christmas,
>>
>> I just came across a new tube, the 28d7 used in the Navy MBF VHF 
>> transceiver.
>>
>> Anybody know other rigs that use it?  Maybe R-392?
>>
>> Rob
>>
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/