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

[Dave Cole]

That helps triage the issue...  Something in my antenna must have gone 
wonky...  I am using a 6BTV, with the 18 Meter add on kit, so the same 
feedpoint is used for all bands, and they are fine...  I was worried it 
was the tuner.  I'll go check the antenna out tonight, and in the 
morning as well...  THANK YOU!  Knowing the tuner is bypassed in Bypass, 
helps...  Next is to put a dummy load on the tuner...

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 3:57 PM, Dick Dievendorff 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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