[Elecraft] Different SWRs on K3 and External Meter

[John Woodard]

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
>