[Elecraft] K3 Ant 1?

Ron D'Eau Claire ron at cobi.biz
Fri Nov 26 10:30:00 EST 2010


A relay switches the KAT3 output between Ant 1 and Ant 2 and there's a
discharge tube on each Ant circuit. It sounds like the relay or the
discharge tube circuit on Ant 1 has been damaged. 

Suggest you send an e-mail to k3support at elecraft dot com and they'll help
you get it put right. 

73, 

Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of cx7tt at 4email.net
Sent: Friday, November 26, 2010 2:24 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 Ant 1?

Need help with some troubleshooting...here is the background:
After being gone for a month I returned to find that my iMac would not 
boot up, the LP100 display had noticeably dimmed and my Steppir 3 ele 
beam had super high SWR on 20m only. Although I had disconnected p/s and 
antennas, we had an unusual amount of t-storm activity while gone. I 
assumed that static discharges had somehow placed gremlins into my 
shack. The local Apple guy was able to get the iMac running with no loss 
of data and Larry kindly helped with getting the latest display chips 
installed but that left the Steppir...why it worked great on 17-6m and 
it was a mystery on 20m with  infinite swr across the band, even after 
doing the calibrate procedure.
Yesterday I decided to upgrade the software of my Orion II and then 
later the K3. After the O II upgrade I connected the Steppir and was 
surprised to see that the swr was normal across the 20m band; I then 
tried it on the K3, infinite swr...I then tried a dummy load on the k3 
and yes, infinite swr but only on 20m. I then moved the dummy load to 
Ant 2 and all was fine. I then hooked the Steppir to Ant 2 and 
everything is working great.
So, here is the question. If the SO239 was bad at Ant1, why does it work 
on all bands except 20m? Unfortunately, this was a factory built unit, 
#250, so my knowledge of the insides is very sketchy.
What do I need to look for?
Tnx
Tom
CX7TT
aka CW7T in CQ WW cw...

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