Update - after several experiments with Ben, I have reproduced the problem on TRN6 100% of the time, but not on TRN3, which I have been using for a long time now. I am using TRN1-4. I turned on and played with TRN5 also, and tried different ADDR values on both TRN 5 and 6, but TRN 5 works fine, and TRN 6 always locks up when the VFO dial is moved. Ben still has the problem on TRN3 for some reason. Maybe some firmware differences? A mystery to be solved.

After setting up the TRN3 and/or TRN6 parameters in the K2 and returning to normal operation, as soon as VFO knob turned the frequency on the display go to
what seems to a randome one, AND VFO input is ignored (?) as dispaly is
"locked".  Other TRN bands (TRN1, 2, 4, 5) work OK.

I have not seen this problem quite as described, and am running the latest firmware in the QRP configuration with internal tuner. One thing that might be happening is the initial displayed frequency might be uninitialized so is randomly set out of band. Try to use the direct frequency input method to set the expected frequency. (Band- and + together, enter digits).

73,

Mike, K7MDL


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