[Elecraft] [K3] TX gain calibration

[Dick Dievendorff]

Results of the most recent calibration are saved in a folder under
%APPDATA%\Elecraft\K3 Tx Gain.  But only the most recent calibration.
There's no history of prior calibrations.

73 de Dick, K6KR


-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Poul Erik Karlshøj
(PKA)
Sent: Wednesday, November 28, 2012 8:09 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] [K3] TX gain calibration

K3 ser. No 03674
MCU 4.39
Utility 1.2.12.28

I recently had to make a new TX gain calibration.  Apparently it was only
80m where the K3 every now and then  displayed  "High Current" and reduced
the transmit power. Even when setting power to a low value (e.g. 25W) then
the very first CW character would create an output signal >100W  and the
High Current would briefly be displayed and the power then would be reduced.

The calibration went smooth and all is now again OK.

It might be interesting to compare the previous calibration result with the
new one. Unfortunately I didn't save the old calibration result before
making a new calibration and the results seem not to be automatically saved
on the PC. Is that correct, also in more recent versions of the utility?

My main question, however, is: what could have changed over time in the K3
which in turn makes a new calibration required? Maybe someone in this group
could make a complete list of the factors which could potentially have
changed and making a new calibration required.

Vy 73
OZ4UN



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