[Amps] Original Ameritron AL-80 question

R.Measures r at somis.org
Fri Jan 13 04:33:33 EST 2006


On Jan 12, 2006, at 8:32 PM, John wrote:

> Hi Butch
>
>   go to ameritron and download the manual you need or one like it.
>
>    Click on the link below. select your manual you want  and then  
> click on the view pdf
>
>   http://www.ameritron.com/manuals.php
>
>   john kb9tc
>   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>
> Butch <k4nau at comcast.net> wrote:
>   Hi folks,
>
> I'm new to this list and quite frankly, not much of a technician. I am 
> also
> the new owner of an AL-80 amplifier - my first tube-type amp. SO....I 
> guess
> I'm asking if one or more of you would be willing to "elmer" me through
> getting this thing up and operating without destroying the tube? If so,
> here's what I've done so far:
>
> 1. I didn't know how long since the unit had been run, so I wiped down 
> the
> tube with denatured alcohol to remove any oils, etc. and installed it 
> into
> the socket. I turned it on and the plate voltage is 2700V, which I 
> have been
> told is what it is supposed to be.
>
> 2. I let the amp run in stand-by for 8 hours to de-gas the tube.

I have never observed that the measured leakage-current through the 
vacuum in a 4-400A, 8163, 3-400Z or 3-500Z decreases by operating the 
filament.  Neither Eimac or Amperex state that such a thing occurs.   
Does anyone know where such a story originated?
>  ...
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org



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