[Elecraft] K3 Fault 6 and loss of power control

Mike Cizek W0VTT mgcizek at gmail.com
Fri Mar 8 08:22:23 EST 2024


Hello Pete,

This happens to my K3S regularly.  After it spent WAY too much time back at the mother ship three years ago without them being able to reproduce the fault (RSA #10260, in case Keith is reading this), I was finally able to narrow down the cause.  

I can reproduce the fault by going from FL2 to FL3, FL3 to FL4 or by exiting the QRQ mode.  This makes me think it may be a firmware problem.  I'm running v5.67, the most recent version.  I can't figure out how to force a load of an earlier version to see if that cures the problem.

Has anyone else experienced this?  I can't be the only one.

---
73,
Mike Cizek WØVTT

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Pete Smith N4ZR
Sent: Wednesday, 6 March, 2024 22:12
To: Elecraft List <elecraft at mailman.qth.net>
Subject: [Elecraft] K3 Fault 6 and loss of power control

Today I started seeing this in my K3 driving a KPA-1500.  It only needs around 30-34 watts to drive it to full power on CW, but when I set the K3's power to that, and everything looks fine, occasionally the K3 displays Fault 6 on its panel and causes the KPA-1500 to fault, displaying 65 watts input on the amp's display and well over 1500 watts on the power bargraph.

I can't find any reference to Fault 6 in the manual for the K3 - can anyone clue me in?  Is something dying in the K3?

--
73, Pete N4ZR
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