jon_kanter@charter.net wrote:
>Hi All,
>I recently purchased an old Hercules II power amp. I'm running it on a marine
>deep cycle battery that I got at Walmart (115AmpHour- biggest one they had),
>with a 15amp charger.
>The problem is that the amp doesn't appear to produce rated power on all
>bands. In fact, driving it with a 100W transmitter, I can only get the rated
>500W output on 10m. On 40m and 20m I can only get about 300W out. This is
>either into a dummy load or the antenna tuner.
>
>The schematic shows pots for bias adjustment, but no indication of what it
>should be.
>
>I called Ten-Tec, but they just recommended to send it in for service. I
>thought I'd first see if anybody on this list had some knowledge about this
>they were willing to pass along. Does anyone out there have experience that
>might be of help?
>
>Appreciate any assistance you can provide.
>Thanks!
>73,
>Jon AF1M
>
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>
>
>
Hi Jon,
That is a strange problem. Generally speaking, you would expect to get
more output on the lower bands from a Herc II than on 10. Hard to
figure.......
I am back from my travels and can probably work in a sked this weekend
if you are planning to be around. Either early or late in the day is
best since I have a variety of chores that I should attend to. I also
bought a fancy new bike that I am trying to ride as much as possible to
offset the guilt I feel for spending so much money on a bicycle at my
advanced age. There was a time when I biked 100 miles a week. I
haven't ridden that much in the past ten years.
Are you sure that the input filters on the Herc II are okay?
Alan
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