[Elecraft] [KPA500] Front panel AUX button?

[Jack Brindle]

When the K3 is set to a transverter band, its BAND outputs on the AUX cable go to all zeros.
This is described on page 19 of the K3 manual. The KPA will see this as a switch to the
60m band, and thus will go to that band, displaying 5.3. Thus the behavior you guys
describe is the correct one for both devices.

You can actually fool the KPA into changing to a different band (although you’ll have a
very difficult time getting it to go to 2 meters…) by setting the CONFIG:KIO3 to TRN, and
then assigning the TRN settings in the menu. Again this is described on page 19 of the K3
user manual. Note, however, that if you do this, the K3 will not output the BAND signals
for HF band operation, instead setting them to all zeros. This doesn’t make the KPA500
unusable, though, since it will automatically select the proper HF band when it does see
HF energy on its input. Still, this might not provide the desired user interface for most
ops.

Since the K144XV (or any other transverter) does not output power through the
standard K3 SO-239 connectors, there should be no problems with the KPA seeing
RF on its input. Still, setting the KPA to STBY would be a good idea when you are
using the 2 meter transverter. 

- Jack Brindle, W6FB
Elecraft Engineering

> 
> On Mar 15, 2015, at 6:21 PM, Harry Yingst via Elecraft <elecraft at mailman.qth.net> wrote:
> 
> 
> Mine does the same
> Maybe a feature request to have the display in the KPA500 to show AUX?
> 
> 
> 
> 
> 
> 
> 
>      From: "kb2m at arrl.net" <kb2m at arrl.net>
> To: 'Jim Miller' <jim at jtmiller.com>; 'Elecraft Reflector' <elecraft at mailman.qth.net> 
> Sent: Sunday, March 15, 2015 3:29 PM
> Subject: Re: [Elecraft] [KPA500] Front panel AUX button?
> 
> The AUX button on my KPA500 switched my K3 to 144.200 mHz, and itself to 5.3
> MHZ. Whatever that's good for...
> 
> 73 Jeff kb2m
> 
> 
> 
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