Try it on several bands. It may be the ALC is set a tad too high and it is
limiting the transceivers output just as it should. In which case readjust
the ALC. It may also be bad tuned input tanks and/or a bad tube(s).

My AL-80B had high vswr on 15/17M tuned input b ut the problem was a soft
3-500Z. Fortunately it was covered under warranty. I made a night light out
of the old tube. See here...

1. http://deepsouthnet.net/images/3-500Z-NiteLite.jpg

--

Charlie-AD5TH
www.ad5th.com






"Dick, AA5VU" wrote in message
...

When attempting to adjust the ALC limit on the rear of the amplifier as
suggested in the manual I am not noticing any effect on the rig. I
have driven the amplifier up to to 85W, and still do not notice and
reduction of power on the radio as indicated in the manual.

I have an external power meter between my rig and the Ameritron Amplifer
and have noticed the power output of the rig is less with the amp on.
If I follow the normal tune up procedure using about five watts of drive
then increase in increments, I can get the max output at about 45 to 50
watts. I cannot get the rig output more than 55 to 60 watts with the
amp ON. Is this normal?

Dick AA5VU