[Elecraft] KAT500: Fails to tune, and shows 3:1 on good antenna on 18 MHz.

[Dave Cole]

Thanks Ken...  That is the next step...  Now I need to locate one...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 9/13/20 4:24 PM, Ken Winterling wrote:
> When you have issues like this the best test is to use a known good 
> dummy load. That removes the antenna system from the equation. See what 
> happens on 18mHz when transmitting into the summy load.
> 
> Ken
> WA2LBI
> 
> 
> 
> 
> On Sun, Sep 13, 2020 at 6:58 PM Dick Dievendorff <dick at elecraft.com 
> <mailto:dick at elecraft.com>> wrote:
> 
>     When unpowered the KAT500 is bypassed, ANT1.
> 
>     When the ATU is in mode BYP, yes, it’s bypassed.
> 
>     73 de Dick, K6KR
> 
>      > On Sep 13, 2020, at 15:52, Dave Cole <dave at nk7z.net
>     <mailto:dave at nk7z.net>> wrote:
>      >
>      > Hello,
>      > My KAT500 which worked yesterday, now shows a 3:1 on 18 MHz.,
>     only. Antenna is a single feedline to a 6BTV, and an analyzer says
>     all is good at low power.  At 100 watts, all seems good.
>      >
>      > All other bands seem OK at high power.
>      >
>      > Question:  When in bypass, is the entire tuner bypassed?
>      > Question:  When turned off is the tuner bypassed?  Which antenna
>     is default?
>      > --
>      > 73, and thanks,
>      > Dave (NK7Z)
>      > https://www.nk7z.net
>      > ARRL Volunteer Examiner
>      > ARRL Technical Specialist
>      > ARRL Asst. Director, NW Division, Technical Resources
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