Joe
Looking at the circuit I see it doesn't have a tuned input but relies on
that 25w resistor, 150 ohms to divide power between it and the cathodes. I
guess you can measure that resistor to ensure it really is 150 ohms. That
15m module could be renived and bypassed to see what happens on the lower
bands. Maybe this is normal?
Have fun...
Steve N4LQ
On Thu, Feb 16, 2017 at 11:01 AM, Joe Papworth via TenTec <
tentec@contesting.com> wrote:
> I've been ignoring an input SWR problem on my Centaur for a while and
> decided to take a look at it today.
> 10 and 15 are higher than the others, (about 1.8 to 1) The others range
> from 1.1 to 1.3 to 1.
> Is that typical?
> If not, the 81763 10/15 meter optional filter board seems to be a likely
> culprit, but there's not much circuitry on it.
>
> Thanks, Joe, K8MP
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