[Elecraft] [K3] splitting RS232 output for 2 serial ports

[Joe Subich, W4TV]

If you're going to use two ports on the computer anyway, why not
simply build the usual resistor/NPN transistor driver into the
DB9 shell (or CW plug) and connect CW to the key in jack on the
K3?

That keeps the cables separate and avoids the need for a custom
cable for computer control.


73,

    ... Joe, W4TV


On 8/7/2012 5:38 PM, John Shadle wrote:
> Hi all,
> I'm trying to accomplish keying with my K3 using the RS232 port and a
> COM port on my desktop computer.
>
> I currently use the RS232 for station logging to provide frequency,
> mode, etc. information and for rig control (e.g., click on a spot and
> then the radio changes frequency/mode). Unfortunately, the program I
> use (AC Log by N3FJP) does not allow you to choose the same COM port
> for both rig control and CW keying.
>
> My question is whether or not I could use a splitter of some type (at
> the K3) to go to 2 separate ports (e.g., COM 1 and COM 2), then use
> COM 1 for rig control and COM 2 for keying. Has anyone else done this?
> Is this acceptable practice?
>
> Thanks!
> -john W4PAH
> Madison, WI
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