Re: [TenTec] Hercules II power output (low?)

[Alan Zaur <AlanZaur@Adelphia.Net>]

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