K3 sudden loss of output power

[Pete Smith N4ZR]

I was routinely calling VK9WA on 40 when my amp suddenly started showing
only 300 watts out.  A little exploration, with the amp out of the
circuit, showed that my K3's output has fallen off to only about 30
watts on 40and 45 on 20.  It shows 85 watts on 15 but full power on
10M.  Indicated SWR is 1-1.5:1 on all bands.

Any diagnostic ideas much appreciated!

--

73, Pete N4ZR
Download the new N1MM Logger+ at
<http://N1MM.hamdocs.com>. Check
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<http://reversebeacon.net>, now
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For spots, please use your favorite
"retail" DX cluster.

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[Oliver Dröse]

Tried TX gain calibration again, Peter?

73 & gl, Olli

Contest, DX & radio projects: http://www.dh8bqa.de


Am 22.11.2015 um 12:48 schrieb Pete Smith N4ZR:
> I was routinely calling VK9WA on 40 when my amp suddenly started
> showing only 300 watts out.  A little exploration, with the amp out of
> the circuit, showed that my K3's output has fallen off to only about
> 30 watts on 40and 45 on 20.  It shows 85 watts on 15 but full power on
> 10M.  Indicated SWR is 1-1.5:1 on all bands.
>
> Any diagnostic ideas much appreciated!
>

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