[Elecraft] [acom-list] Re: Elecraft K3 and ACOM 2000A

[Jim Brown]

On Sat,9/13/2014 7:33 AM, Dick Dievendorff wrote:
> RS-232 is not a protocol that permits two senders. It's ok to "sniff" the Rx
> line, multiple receivers.
>
> I doubt that the ACOM (or the Expert) polls the K3.  I bet they are passive
> listeners.
>
> You need frequency messages to be presented to the ACOM on QSY.
>
> The "normal" technique for this is to turn on K3 Auto Info (a K3 menu
> configuration selection). Then as you QSY (or actually, your QSY stops), the
> K3 sends a message with the new frequency.
>
> If you are running a logging program, it probably polls the K3 for frequency
> often, and the ACOM can "sniff" those responses, and then the K3 Auto Info
> isn't as necessary.

Good advice. I have no experience with these amps, but I do have a 
SteppIR controller that functions as Dick describes. I used it with 
Commander, the rig control program that is part of the DXLog suite, and 
with N1MM. I found that I had to use the computer to set the K3's 
frequency.

I no longer use that connection, because I switch the SteppIR between 
two radios for SO2R.

73, Jim K9YC