[AMRadio] Re: 450T amp

Geoff/W5OMR ars.w5omr at gmail.com
Wed Jun 13 01:33:02 EDT 2007

D. Chester wrote:
> I wouldn't run the tube filament at half voltage.  That will shorten 
> the tube life just as much as too much voltage.

it was just for a test, to see if the circuit was working.  It probably 
wasn't on more than 15 mins.

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