[Elecraft] KRC2 relay control

[Jack Brindle]

Byron is on the right track here. The best way to control the KRC2’s ACx pins is to do it through the K3’s menu. The KRC2 is listening to the K3 to get band and status information, and not necessarily to a computer. So setting the state in the K3 will cause it to be changed in the KRC2.

Take a good look at the K3’s MN command, specifically MN049. I suspect that testing with the K3 Utility’s command pane will quickly show you the correct command to do what you want. From there is is a pretty simple matter to plug the command into N1MM+.

By the way, the K3S/K3//KX3 Programmer’s Reference has been seeing a lot of update activity recently. If you haven’t downloaded the latest, you may be missing out on some interesting stuff. 

Jack Brindle, W6FB



> On Jul 4, 2015, at 11:57 AM, Byron Servies <byron at n6nul.org> wrote:
> 
> Hi,
> 
> See the KRC2 manual and search for AC1.  On Page 15 of the rev.C
> manual, the KRC2 test procedure includes using F4 for accessory
> drivers, and page 19 has the default behavior of F4.
> 
> I am not in front of my ham pc right now, but I believe there is a way
> to trigger those from the utility. Perhaps someone else knows if there
> is a command in the K2 programmers manual for triggering these
> outputs.
> 
> 73, Byron N6NUL
> 
> On Sat, Jul 4, 2015 at 10:24 AM, Rich <rwnewbould at comcast.net <mailto:rwnewbould at comcast.net>> wrote:
>> I have research this idea on my own and do not see a way to do what I want.
>> I know there are really smart folks on this list so I am looking for some
>> help.
>> 
>> I was hoping to control the 12vdc (ON/OFF) for my RX ant preamp via the K3
>> keyboard commands (Writelog, N1MM).  I was thinking this could possibly be
>> done via the sink/source relays in the KRC2.   I already use the KRC2 for
>> band decoding,  but it appears to me that the relays only react to band
>> changes.  Are there  computer controllable commands for the A B C D relays
>> in the KRC2 or any other ideas?
>> 
>> I hope this is clearer than mud.
>> 
>> Rich
>> K3RWN
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> 
> 
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