Re: Peculiar problem on 80 M
Posted by
Geoffrey Mackenzie-Kennedy-2 on
Sep 25, 2006; 3:07pm
URL: http://elecraft.85.s1.nabble.com/More-information-Need-help-with-fluctuating-power-output-on-K2-tp386379p386393.html
Stephen W. Kercel AA4AK wrote:
> I have a strange problem with my K2/100 on 80 meters.
>
> The situation is as follows:
>
> I work QRP DX at the low end of 80 M, (say 3508 kHz or thereabouts) with a
> requested power of 4.5 watts, and get an indicated 5 watts out.
>
> I then check into the Pine Tree Net on 3596 kHz and crank up the requested
> power to 10 watts (this is before the relay clicks; I'm still in QRP
> mode), and I get about 10 watts out. So far so good, right?
>
> Then I go back to 3508 kHz, without resetting the power request level
> knob, but the rig puts out 5 watts, even though the display acknowledges
> my ten watt request. If I go back to 3596 the output goes back to 10 watts
> in agreement with the requested level.
>
<snip>
>
> Has anyone else run into this phenomenon?
-----------------------------------------------------------------
Steve,
After checking I find that my K2/100 #3255 behaves in the same way on 80m
when feeding a good dummy load. - do not have any 80m antenna. As you say
the problem does not appear to arise on other bands. I notice other strange
behaviour on 80m related to 'power request', but I would need to run various
tests before making any comment.
73,
Geoff
GM4ESD
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