K3/KPA500 question

[Joe K2UF]

I have my K3-KAT500-KPA500 working great.  The amp is off to the left side
and I can't see the display easily.  while working on building an auto
antenna switch  I noticed  that the band display on the amp does not synch
with the K3.  It seems to be random.  If I hit  one dit on the key  the amp
will synch the band with the K3.  I am not sure if this has been working
like this right along and just did not  notice.
 
Any ideas guys.
 
73 Joe K2UF
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[Michael Coogan]

https://kv5j.com/

Get one of these!
Mike KB7ME

> On Apr 23, 2021, at 18:17, Joe K2UF <[hidden email]> wrote:
>
> I have my K3-KAT500-KPA500 working great.  The amp is off to the left side
> and I can't see the display easily.  while working on building an auto
> antenna switch  I noticed  that the band display on the amp does not synch
> with the K3.  It seems to be random.  If I hit  one dit on the key  the amp
> will synch the band with the K3.  I am not sure if this has been working
> like this right along and just did not  notice.
>
> Any ideas guys.
>
> 73 Joe K2UF
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[Dave wo2x]

Still won’t fix why the amp and radio are losing sync.

Sent from my waxed string and tin cans.

> On Apr 23, 2021, at 9:33 PM, Michael Coogan <[hidden email]> wrote:
>
> https://kv5j.com/
>
> Get one of these!
> Mike KB7ME
>
>
>> On Apr 23, 2021, at 18:17, Joe K2UF <[hidden email]> wrote:
>>
>> I have my K3-KAT500-KPA500 working great.  The amp is off to the left side
>> and I can't see the display easily.  while working on building an auto
>> antenna switch  I noticed  that the band display on the amp does not synch
>> with the K3.  It seems to be random.  If I hit  one dit on the key  the amp
>> will synch the band with the K3.  I am not sure if this has been working
>> like this right along and just did not  notice.
>>
>> Any ideas guys.
>>
>> 73 Joe K2UF
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
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[Elecraft mailing list]

Check the AuxIO cables. They carry the band data from the K3 to the KPA500 (BAND0-3 signals). If they are not connected correctly or either cable is damaged, I would expect the behavior you describe.
The AuxIO cable goes from the K3 to the KAT500, then another from the KAT500 to the KPA500. Be sure to check both.

73!
Jack, W6FB

> On Apr 23, 2021, at 8:17 PM, Joe K2UF <[hidden email]> wrote:
>
> I have my K3-KAT500-KPA500 working great.  The amp is off to the left side
> and I can't see the display easily.  while working on building an auto
> antenna switch  I noticed  that the band display on the amp does not synch
> with the K3.  It seems to be random.  If I hit  one dit on the key  the amp
> will synch the band with the K3.  I am not sure if this has been working
> like this right along and just did not  notice.
>
> Any ideas guys.
>
> 73 Joe K2UF
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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