[Elecraft] K3 for CW

[Don KB1YBG]

I received my K3/10 kit on Friday and compleated the build yesterday. 
Everything went very smoothly and I believe very worthwhile to become
familar with the K3 construction.  Nothing like building the K2 but a good
experience none the less.

Today I began the calibration using the K3 Utility on Win XP, and
encountered the following.  While performing Calibrating Transmitter Gain,
it starts the 5W calibration and reports Calibrating at 1.900 MHz and then
the K3 powers off immediately.  I continued to the mw calibration and that
completed successfully.
I am using the Elecraft 20W dummy load and got the same results on both Ant
1 and Ant 2.  I tried this with same results with power set to 5W and 10W.

I also noticed that while trying to auto-tune on 20m the receiver also
powered off.  The auto-tune worked on other bands.  Currently I'm not
connected to my outside antennas, just a wire with counter poise cut for
17m.

The power supply is a 20Amp bench supply set at 13.8 V.  It shows a current
of 1.04 Amp.

The K3 MCU Ver is 4.48.  The utility is 1.12.3.28.

Anyone encountered this?

Thanks,
Don

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