[Elecraft] Different SWRs on K3 and External Meter

[Michael Eberle]

I had an issue getting the TX gain calibration to pass at 52 MHz once, 
but it was because SPLIT was enabled on 6 meters.  For some reason my K3 
will not transmit a carrier on 6 meters by holding the TUNE button if 
SPLIT is enabled.  It will on every band but 6.

Mike - KI0HA


On 2/5/2018 22:59, John Woodard wrote:
> On Sun, Feb 4, 2018 at 17:45 John Woodard <john.l.woodard at gmail.com> wrote:
>
>> I just installed the KXV3B board, upgrading from the KXV3A. When I went to
>> do the 1mW calibration at the end, the calibration failed because the SWR
>> was 2.9:1 on 52 MHz. I tried a couple more times, with different dummy
>> loads and cables and found the same result.
>>
>>
>> I then connected an external SWR meter to the dummy load and found that
>> the external SWR meter showed a flat 1:1 SWR with the dummy load (as
>> expected) but the K3 SWR value was always higher, typically 1.4 or 1.5:1 up
>> to 2.9:1 on 52 MHz into the dummy load. The tuner works perfectly on all
>> bands, however.
>>
>>
>> Has anyone had a similar issue? I can’t quite tell if the problem is in
>> the KAT3 or on the K3 main board, and more importantly what the fix might
>> be.  Also, since the 1mW calibration failed, are there any other
>> workarounds? Many thanks in advance!
>>
>>
>> 73 de John, WK8A
>>
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