[Elecraft] KAT500 question...

[Dave Cole]

Hi,

Thank you for the response...  I was running the tuner in MAN mode...  I 
did the tuner training a while ago...  No relay clicks are associated 
with the SWR jump.

Interestingly enough, the entire issue seems to have ceased happening... 
  I am sure it will come back, as I have seen it before...

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

On 11/18/20 1:38 PM, Don Wilhelm wrote:
> Dave,
> 
> Are you running with the KAT500 in MAN or TUN?
> After you have trained the KAT500 to the antenna (see the manual for the 
> bin sizes for each band), you should switch it to MANual.  That will 
> keep it from trying to TUNe when you first transmit.
> 
> 73,
> Don W3FPR
> 
> On 11/18/2020 2:56 PM, Dave Cole wrote:
>> Hi,
>>
>> I have a quick question regarding operation of my KAT500 tuner.  I 
>> have a K3 feeding a KPA500, feeding the KAT500, feeding a 6BTV 
>> vertical which is tuned up well, and can run with the tuner in bypass, 
>> and keep SWR below 1.7:1 on all bands...
>>
>> If I am using the KAT500 as a tuner, and I watch the SWR indicator on 
>> the KAT500, for an instant, at key-down, I see greater than 3:1 SWR, 
>> then it drops to normal, all in within a few milliseconds, to 
>> microseconds.  Every so often this will fault the amp.
>>
>> If I put the tuner in bypass everything is normal...  No issues, the 
>> SWR indicator operates as normal, the amp never faults...
>>
>> Anyone have a guess as to what is happening?