Jim,
You do need a good 50 ohm dummy load to run the TX Gain Calibration.
If it fails with K3 Utility, you can try running it band by band as
indicated in the manual. After having success with the manual
calibration, try running it from K3 Utility again.
If you do not have a good 50 ohm
Completed building my K3S (2.7kHz stock filter only, KP3A 100 W PA). Carried
out 5 W and 50 W calibration successfully. Subsequently upgraded Software
successfully. Shut down but next day noticed power out was low. Re-run
Calibration but now it fails even on 5 W showing "ERR TXGN". I'd
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