[Elecraft] [K3] - Odd SWR readings ANT1 v ANT2

[GW0ETF]

Joe,

Just been playing with this some more and there does seem something odd
about 28MHz.

If I do as you instruct the swr does indeed now indicate 1:1 on bypass to a
dummy load. However if I turn on the ATU and 'tune' it to match to an
antenna and then go back and check bypass into the dummy load I get a high
reading again. It's as if invoking the ATU to match the antenna is wiping
the 50 ohm setting previously set up - all other bands seem fine. ANT1 and 2
behave the same...TUNE power by the way is 10 watts.

Stewart, GW0ETF 


Joe Subich, W4TV-4 wrote:
> 
> 
> Stewart,
> 
> The K3ANT does not do a "hard" bypass.  Instead it sets the
> tuner to the memorized 50 Ohm : 50 Ohm position.
> 
> Since the tuner memories are "by band" and "by antenna" - plug
> the dummy load into the ANT 1 position, enable the tuner and
> hit the "ATU Tune" button.  That will "teach" the tuner the 50
> Ohm setting for ANT 1 and you won't see the issue in the future.
> 
> 73,
> 
>     ... Joe, W4TV
> 
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