[Top] [All Lists]

[Amps] al80a

To: <>
Subject: [Amps] al80a
From: (2)
Date: Fri, 2 Aug 2002 07:40:28 -0700
>> >  One more comment here,
>> Please??  I turned the amp on
>> and noted that the
>> > plate(anode to the new
>> generation) turned a little
>> red, indicating that
>> > the
>> > plate (anode) is drawing
>> current !! ( maybe too much??)
>> >  Carl / kz5ca
>> >
>>      //When you power "on"
>> the amp but it remains in
>> standby (unkeyed),
>> it shouldn't draw any plate
>> current and the anode should
>> be dark gray.  If
>> it's drawing current, either
>> it's keyed or its cutoff bias
>> isn't there.
>> What happens if you flip the
>> switch to STBY?  -WB2WIK/6
>Or there's a grid to filament short,
>while hot or cold.  With an elevated B-
>rail and grid metering between B- and
>ground,  plate current will flow through
>the grid meter shunt and can't be
>cut-off.  This is the wrong direction
>for the grid meter hence the negative
>grid meter reading, the big clue!!


-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,  

<Prev in Thread] Current Thread [Next in Thread>