[Amps] HV/Tune-up Procedure for AL-80A

[Harold B. Mandel]

Dear Scott,

You might wish to open the HV circuit and let the tubes cook with just
filament
voltage applied for about a day.  This might serve to prolong the tube
life
and to prepare them for the shock of RF and HV.

Hal Mandel
W4HBM


> I just got a very nice Ameritron AL-80A, which seems to be in very 
> nice 
> shape- certainly excellent cosmetically. Unfortunately, the fellow I 
> bought 
> it from neglected to pack the manual with it and I'm expecting it in 
> the 
> mail in a day or two. In the meantime, I'm wondering if anyone can 
> let me 
> know what I should see for high voltage (I'm seeing about 3000-3100 
> volts, 
> on a 115 volt line) and what the tune up procedure is for this amp. 
> I've had 
> it on for a few hours idling, just in case the tube- an Eimac- might 
> be a 
> bit gassy from lack of use, but haven't put any RF into it, but I'd 
> like to 
> get on line ASAP. Is 3000-3100 volts reasonable for this amp at 115v 
> line 
> voltage? Any assistance any of you can offer will be most 
> appreciated!