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

[Ken Winterling]

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> 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> 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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