Hello,
My K3 is exhibiting some SWR meter behavior I don’t quite understand. To
eliminate any possible effects of antennas or cabling, I hooked a Palstar DL2K
dummy load directly to the K3 antenna connector. All bands except 40 meters
seem fine, with SWR reading as you would expect with a dummy load. The anomaly
I am seeing is that SWR as shown on the K3 meter looks fine at 7.01 MHz
(approx. 1.2:1), but as I go up in frequency, the SWR as shown on the K3 meter
rises. When I transmit into the dummy load on 7.298 MHz, the K3 meter reads
almost 3:1. I can switch in the K3 internal tuner and bring the SWR down to
1:1.
I also tried an older Cantenna dummy load with the same puzzling results.
Any ideas as to what may be causing this 40 meter only problem? I first
noticed this problem during NAQP SSB when using my Steppir, which of course
retunes itself as I change frequency. When going from the low part of the phone
band to the high part on 40 meters, I noticed SWR increasing on the K3 meter,
even though it was not increasing and stayed at 1.2:1 on my inline LP-100A.
The K3 also started to fold back power. That prompted me to do the further
testing with the dummy load as I discussed above.
--Ed—
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