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

[Dick Dievendorff]

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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