[Elecraft] Different SWRs on K3 and External Meter

[Ken K6MR]

The dummy load needs to be connected to the XVTR OUT jack, not the main 
antenna connector.  The tuner path has nothing to do with it.

See K3 manual around page 53 or so.

Ken K6MR



On 05-Feb-18 20:59:03, "John Woodard" <john.l.woodard at gmail.com> 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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