What voltage is supplying the radio? There was a bug for the ATU centered around falling supply voltage and this may have something to do with that - even though you do not have a tuner.
The factory had to change a resistor value to correct along with some firmware.
----- Original Message -----
From: Len (
[hidden email])
Date: 07/23/19 01:27
To:
[hidden email]
Subject: [Elecraft] KX3 SWR issue
Curious if anyone on the reflector has experienced false SWR readings on their KX3? No antenna tuner is installed. Radio tested on a dependable dummy load and SWR/Power meter. On transmit at 5.8 W or less, the radio displays "full-scale" SWR reading (> 1.4-1) with power output consistent with radio power setting. At 6w and above, display jumps down to 0 SWR and 0 RF output even though the radio is still able to transmit.
Receiver functions perfectly.
I have initiated an EENT, and re-loded latest software from Elecraft site. I loaded the original factory configuration provided to me by Elecraft. If anyone has any further suggestions that I might consider before I send the unit back to Elecraft for evaluation, I would be very grateful. Tnx and 73
Len, K6LEN
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