I had the chance to use a K3 during SS CW. I liked the rx and found it easy to remove most of the QRM. Something I'm not used to! Since I usually operate with antennas fed with open wire I have been accustomed to fine tuning an external antenna tuner during automated CQing. The first time I tried this the K3 shut down. I tried it again to be sure and it shut down again. Each time I powered it back up and it came on with a different freq and filter setting than I was using. It also shut down another time when I wasnt adjusting SWR but cant recall the exact cicumstance other than I was adjusting something on the RX during a CQ. I found many adjustments that couldnt be made while transmitting. Not a big deal but some of them caused the sidetone to disappear or be distorted. Not sure what the actual transmitted signal was doing. I can get used to not adjusting the rx during xmit but a shutdown is not acceptable during a contest. It seems that swr power foldback should alleviate a shutdown. Any thoughts? This wasnt at my station so I dont have much other information. I dont believe this is a power supply issue as I have used other rigs at this qth with the same power supply without incident. This K3 was using the latest firmware and is around serial #1700. Thanks, Steve WA3A
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