Phil,
That is not normal behavior. Check (by replacement) the BNC cable
between the K3 IF output and the P3. In the past there were a few bad
ones found.
73,
Don W3FPR
On 2/10/2013 4:14 PM, Phil Hystad wrote:
I have a K3/P3, actually, have KPA500 and KAT500 too but this question is about
my P3.
If I switch to 10-meters (and, there is activity on the band), the P3 shows the
signals and the waterfall for about two seconds. After about two seconds,
there is a change. The waterfall signal disappears and the signals almost
disappear except for the stronger ones if any. Essentially, at times I have
nothing but that horizontal line dividing the top from the bottom waterfall
region. If the signal is strong, it does show a waterfall display. When I say
no waterfall display, I mean no blue fuzzy noise color at all.
So, it looks like there is a huge dB drop in signal strength, maybe 20 dB I am
guessing. And, Preamp is on during this too. Antenna is a Traffie Hex Beam.
Note: although I do not have a P3 for my Icom 756 Pro III it does have a
spectrum display and it does not have this behavior of an apparent huge drop in
signal so I don't think it is huge loss on my antenna at 10 meters or
transmission cable.
What puzzles me is that this change occurs two or two-and-a-half seconds after
the switch and after the P3 repaints to show the 10-meter band (usually around
28.020 to 28.050 is where I operate, CW).
Is this normal behavior? Can someone explain what is happening?
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