I agree that 20 meters is the band with the lowest output, but I get
2050 watts key down in CW and with a whistle 2150 watts peak power into
a dummy load with 100 watts drive. The grid reads 25ma by the way. The
power measured with an LP-100. I easily get 1500 watts key down with 60
watts of drive on 20 meters and 1677 watts peak power on a SSB whistle
as measured on the LP-100 into a dummy load. I don't know if this
helps.
Mike
-----Original Message-----
On 20 meters the amp takes close to 100 watts to get 1500 watts out.
The other bands only take around 55 watts (max ever used on 10m is
1000w).
Same results on two different antennas
In standby the HV meter reads around 36-3700 volts.
The amp tunes ok on 20 meters. Only difference is the grid is up around
50
on 20 whereas on the other bands it is around 20 on 1500w out. Ameritron
states the meters could be up to 25 percent off on the readings.
I do not use ALC to the amp.
On occasion I can hear a barely audible crack or pop. This is in standby
or
full op whether I am keying the amp or not keying.
Removing the cover I see no arching indication or black spots on the
band
switch.
The amp is around 10 years old and has seen a lot of contesting (rtty).
Thanks
Charles/kk5oq
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