KXPA100 Amp Issue

[Elecraft mailing list]

My KXPA 100 is switching from antenna 1 to antenna 2 on its own when I go from band to band on the KX3.  Anybody know what could be causing this?  Also, I only have one antenna.
Thanks,JimW7JHR 

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[Don Wilhelm]

Jim,

ANT1/ANT2 is a per band setting.  If you have not set the antenna port
to the antenna you are using, then the antenna selected could be random.

Go to each band and set the antenna to whichever antenna is connected,
then test the behavior by switching from band to band.

If you bought the KXAT100 and KX3 used, the prior owner may have had
specific antenna selections set per band - if you bought it new, it may
just be a matter of initializing things.

73,
Don W3FPR

On 8/11/2016 7:32 PM, Jim via Elecraft wrote:
> My KXPA 100 is switching from antenna 1 to antenna 2 on its own when I go from band to band on the KX3.  Anybody know what could be causing this?  Also, I only have one antenna.
> Thanks,JimW7JHR
>
>

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[Elecraft mailing list]

Thanks folks.
Problem solved!
JimW7JHR
 

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    On Thursday, August 11, 2016 5:15 PM, Don Wilhelm <[hidden email]> wrote:
 

 Jim,

ANT1/ANT2 is a per band setting.  If you have not set the antenna port
to the antenna you are using, then the antenna selected could be random.

Go to each band and set the antenna to whichever antenna is connected,
then test the behavior by switching from band to band.

If you bought the KXAT100 and KX3 used, the prior owner may have had
specific antenna selections set per band - if you bought it new, it may
just be a matter of initializing things.

73,
Don W3FPR

On 8/11/2016 7:32 PM, Jim via Elecraft wrote:
> My KXPA 100 is switching from antenna 1 to antenna 2 on its own when I go from band to band on the KX3.  Anybody know what could be causing this?  Also, I only have one antenna.
> Thanks,JimW7JHR
>
>



   
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[Bob N3MNT]

It is also possible to accidentally switch if you hold the ATU button to long.  If you only have one antenna and want to prevent this, connect to the KXPA100 utility and you can disable ant 2 so it can not be selected by accident.