Paul,
At first glance, I would attribute that behavior to RF Feedback, but
since I assume the KX1 was in receive when that happened, RF Feedback is
out of the picture.
I would be suspicious of the encoder itself and would be inclined to
replace it.
However, the fact that it works fine into a dummy load negates that thought.
You might want to try a Reset To Factory Defaults, but first record ALL
the menu settings in your KX1, especially the BFO and DDS and SIG menu
settings. Restore those settings after the reset.
73,
Don W3FPR
On 6/9/2017 10:39 AM, Paul Huff wrote:
My 3-band (40, 30, 20) KX-1 with built-in antenna tuner has given me faithful
service for portable operations for the past 11 years but yesterday an issue
developed.
I had just completed a QSO on 40-meters (about 7.038) and started to turn the
tuning knob up the band. After a couple of turns the digital frequency display
went blank. When I reversed direction and tuned down the band the display
returned but again, after several turns it went blank. I turned the radio off
and back on and got the same results - after a few turns of the tuning knob in
either direction the frequency display would blank out. So I shut my operation
down and headed home. I should add that I had inadvertently done some
transmitting for two or three minutes on 20-meters with a rather high SWR
before my QSO on 40. The antenna match on 30 and 40 meters was very good.
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