>
>
>
>> > 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!!
Bingo.
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
|