My friend has a AL80A...generic amplifier. In fact, I sold it to him. He was
having some issues loading it so I went over to his house and took a look.
This amp worked great for me for about 5 years or so.
We were going into a 40 meter antenna which gave an SWR reading of 1.1 to 1.
Very low. Seemed to me to be OK.....
The amp would go to 400 mills and 160-170 mills on the grid with about 73 watts
of drive. Around 600 watts. I could dip the plate and see the peak on the watt
meter. Seems reasonable to me. But, the load control on the amp had no
effect on the grid current or the plate current. I could almost put the load
control anywhere and it would not affect the meters what so ever. Now, this
had never happened to me before when I owned the amp. The load control was
.... working normally to my thinking and I could adjust the load of the amp and
bring down the grid current to around 120 mills. Kind of has be baffled as to
why it is doing this. I do not think it is normal.
Does this "august" group have any words of wisdom?
Lee - K0WA
In our day and age it seems that Common Sense is in short supply. If you don't
have any Common Sense - get some Common Sense and use it. If you can't find
any Common Sense, ask for help from somebody who has some Common Sense. Is
Common Sense divine?
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