Running the low and high power TX gain calibration via the K3
Utility gave the following result:
"TX Gain calibration failed because power reading did not
converge to a consistent value. 5W calibration failed."
"TX Gain calibration failed because power reading did not
converge to a consistent value. 50 W calibration failed."
The low power calibration failed on 40 meters and stopped there.
The 50 W calibration failed on 160 meters and stopped there.
The radio also gave an error message: ERR TXG (Transmit gain
constant out of range).
73, Arliss
Arliss,
I would suggest that you run the Transmit Gain Calibration and
see if that improves the situation.
73,
Don W3FPR
On 3/13/2013 9:10 PM, Arliss wrote:
>I'm experiencing a problem with instability in power output
>from my K3/100. No word back from Elecraft yet (it's only been
>a few days), so I thought I'd try here.
>
> The problem is that at relatively low power output levels
>(approximately 10 to 40 watts), the power output does not
>remain constant. If I engage TUNE, the power will vary
>plus/minus 3 or 4 watts, then jump up briefly by as much as 10
>watts or more before resuming smaller excursions. Although the
>power variations are brief, they cause the grid protection
>circuit in the amp to trip. This behavior seems to be
>independent of mode and frequency.
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