[Elecraft] KX3 and KPA500

Wayne Burdick n6kr at elecraft.com
Sun Jun 10 13:56:16 EDT 2012


The keying output at the KX3 is on the ring, not the tip, of ACC2.  
This is mentioned in the latest manual errata.

73,
Wayne
N6KR


On Jun 10, 2012, at 10:34 AM, Carlson David wrote:

> Thanks Adrian for you advice. I did change the ACC2 IO setting to  
> LO=PTT. The KX3 still will not key the KPA500 when I press the mic  
> button. The KX3 goes into transmit but not the KPA500.  I have the  
> center wire from the KPA500 PA Key connected to the tip of the 2.5mm  
> plug going into the KX3. If I reverse the lead on the cable (from  
> the PA Key to the ACC2IO) the KPA500 does go into transmit without  
> me keying the KX3. That is where I was before, I have to put the  
> KPA500 into standby to receive and then put it into operate when I  
> want to transmit. For your information I do use my KPA500 with my K3  
> and it works perfectly. I did discount the custom cable between the  
> K3 and KPA500 when I connected my KX3 to the KPA500.
>
> Is there any setting on the KPA500 menu that I need to change? Any  
> ideas?
>
> Thanks
>
> Dave WA6DKN
>
>
>
>
>> I can't figure out how to set the ACC2IO on the KX3 so that it will  
>> key
> the KPA500 properly. I currently have the >ACC2IO in the off  
> position. When
> I connect the cable between the ACC2IO and the PA Key on the back of  
> the
> KPA500 it puts >the KPA500 in a transmit mode. I have to manually  
> put the
> KPA500 in standby to receive and then Operate to transmit. I >have  
> tried a
> number of different settings on the KX3 and KPA500 with no success.   
> What am
> I doing wrong?  (incidentally >the KX3 will drive the KPA500 to  
> almost 200
> watts output).
>
> ACC2 IO     setting > LO=PTT (input; apply 0 V or ground to
>
> activate PTT)
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