[Elecraft] KPA500: strange behaviour - any ideas?
hawley, charles j jr
c-hawley at illinois.edu
Wed Jan 23 08:21:12 EST 2013
Mine does that too...about the same as yours. I figured it was a small amount of rf getting into the data cable on occasion.
Chuck, KE9UW
Lionel Trains, TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWMOA #224
________________________________________
From: elecraft-bounces at mailman.qth.net [elecraft-bounces at mailman.qth.net] on behalf of zendoc at netspace.net.au [zendoc at netspace.net.au]
Sent: Wednesday, January 23, 2013 6:38 AM
To: Elecraft Group
Subject: [Elecraft] KPA500: strange behaviour - any ideas?
Hello Group,
I'm running KPA500 #1076 with firmware 1.23 installed. It's
connected to my K3 via the elecraft AUX cable and is connected to my
PC via serial to USB adapter cable using FTDI chipset. Interfacing
functions with the PC and K3 work flawlessly.
It runs perfectly apart from one intermittent peculiarity:
unpredictably, when in QSO, the amp will switch from operate to
standby mode. This does not trigger the Fault indicator and no fault
# is ever reported by the KPA500 to the utility program or to the K3
LCD. It can't identify any triggers for these auto-tripping events.
I simply return the KPA500 to operate mode and continue the QSO
normally. This occurs on average once per hour of operation, rarely
more frequently.
Any ideas where to look for the cause?
Thanks and 73,
John
VK7JB
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