[Elecraft] K3:VSWR meter readings?
Craig
vk3he at yahoo.com
Mon May 5 07:08:02 EDT 2008
Anyone else observe this on their K3?
I terminate my K3 in a perfect dummy load. I then
repeatedly test under SSB voice, then without reason
it appears as if the K3;s VSWR meter spikes upwards to
a higher reading. It seems to do it on every 4th or
5th voice peak. It seems to settle down back to where
it should be, then it mysteriously shoots up. Is this
normal or is it just the sampling thats slow or
something like that?
I initially thought it was a faulty cable or dummy
load, however I can make the same observation on all
my other microwave dummy loads. I checked all my
cables, and they are all in fine condition. The VSWR
on the loads are as perfect as they can be.
I did redo my calibration at all power levels and
thats all fine. There is no observable power drop on
the scope and the peak reading wattmeter. Under
constant carrier conditions its perfect and does not
move. I just don't know what to make of this
observation.
Initially when I was driving the AMP i thought it
might have been a tuned input or RF problem, however
the dummy load has confirmed that this issue exists
independently without the amplifier.
73
Craig
VK3HE
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