[ARC5] [armyradios] Re: OSS in Burma

[J. Forster]

Hmm...   Octal battery tubes. Interesting, but probably near unobtanium now.

The heater strings are a power hog, hence my query. Starved plate does
certainly work, and is currently reccomended by some.

Best,

-John

=================



> Hi John,
>
> I have read reports from a few people who have or saw those receivers
> with FETs in them. Others have reported running them from much lower
> plate voltages - down to 12 or 24 volts DC. I know there were octal
> "battery" tubes but I don't know if the right types are available. I
> would think they made all of the functions available in that style of
> tube. I have only one. That would save changing the sockets even if some
> rewiring is needed for different pinouts.
>
> I have run the plate circuits on a bank of 9 volt batteries for 45 volts
> but with the stock configuration of 24 volts on the heater strings. I
> did not evaluate the performance with 45 volts B+ beyond go-no go. It
> was go. The heater strings are the real power hogs in those receivers.
> Using battery tubes might actually be worth the trouble if extended
> operation on batteries was the goal..as in this thread. I'm reluctant to
> move a 100 pound radio across the room and never mind about using 25
> native porters to move it across a big island!
>
> I have a BC-1306 receiver here - provenance unknown. It uses battery
> tubes. It's a reasonable proposition.
>
> 73,
>
> Bill  KU8H
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