[Elecraft] ERR TXG

[Dave G4AON]

Have you tried starting with a different power level setting on the
front panel control? I've had a similar problem and that fixed it.

Alternatively, have you tried manual gain calibration?

73 Dave, G4AON
K3/100 #80
-------------------
I assembled a K3/10 + KBPF3 + AM filter (+ default 2.7Khz filter). After
synth calibration, filter setup, ref oscillator calibration I performed TX
gain calibration using Electraft K3 utility, but it fails immediately
with *ERR
TXG*.

Filter setup is
Fil1: none
Fil2: 6.0Khz (0hz), 0db
Fil3: 2.7 (-0.85Khz), 0dB

Any idea of what the problem could be?
Thanks

Eric ve2shf