Peak SSB power can exceed the 100 watts if all the calibrations are not current. You should very carefully make sure that the actual peak power and the steady CW power are the same. Make sure that all the manual's calibrations have been run. In order to run right, the firmware needs to know a small pile of things about your particular K3 to make performance standard. "Recently" does not give me warm fuzzies about being adjusted to spec.
I have found that sometimes doing a firmware update will unglue some of the stored data in the K3, both calibration and others, despite Elecraft's protestations that shouldn't happen. Doesn't hurt to rerun the ENTIRE set of calibration exercises every couple of years. Not with every firmware update for sure, but whenever an update is followed by some previously unnoticed quirkiness I'll run them. That way I'm on the clean side of things if I report a quirk to be related to an update. If the quirk was cleaned up by a calibration, one can be assured that Big E will never be able to duplicate it and figure out what was going on if I reported it without recalibration. I really don't want to waste any of their time. They're more interesting when they're working on their projects. 73, Guy K2AV On Tue, Aug 19, 2014 at 3:33 PM, Fred Townsend <[email protected]> wrote: > > Mark I have not seen your problem so I tend to discount your explanation. It > sounds like something is breaking down. Perhaps bad coax, antenna, insulator, > or lightning arrestor. You could test with a TDR (Time Domain Reflectometer) > or Hipot tester. If you lack the equipment connect a dummy load to the K3 and > test. If that passes your problem is not in the K3. > 73 > Fred, AE6QL > > -----Original Message----- >>From: Mark N2QT via Elecraft <[email protected]> >>Sent: Aug 19, 2014 12:15 PM >>To: "[email protected]" <[email protected]> >>Subject: [Elecraft] K3 false SWR indication with SSB >> >>My k3 flashes a higher swr indication with ssb voice peaks than with a steady >>carrier. >> >>If using an antenna with 1:1 SWR the bar graph flashes the first segment. If >>swr is 1.5:1 >>all the segments illuminate on voice peaks, as if swr was greater than 3:1. >>To reduce the >>uncertainty introduced by my antennas, I connected a 50 ohm load after an >>external tuner >>so I could create the 1.5:1 SWR, and got the same results. >> >>I assume this is a benign problem and likely caused by the non simultaneous >>sampling >>of FWD and REV power by the CPU. >> >>However, if no one else sees this I'll do some more checking. >> >>FW 4.81/2.83 and TX Gain Cal done recently. >> >>Mark. N2QT > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
