[TenTec] Hercules II power output (low?)

[Steve N4LQ]

I think full power is 500 watts so you're doing good on 10m which seems odd. 
Full power output normally requires 13.8vdc and your battery is a bit lower. 
Also check for voltage drop on your dc cable. What is the actual dc voltage 
at the amp? Don't mess with the pots.
What's with TenTec lately? I would have thought they would tell you about 
the same thing.

Steve Ellington
N4LQ at iglou.com
----- Original Message ----- 
From: <jon_kanter at charter.net>
To: <tentec at contesting.com>
Sent: Monday, March 28, 2005 1:19 PM
Subject: [TenTec] Hercules II power output (low?)


> 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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