[Elecraft] K2 and N1MM+

[Victor Rosenthal 4X6GP]

I made a simple modification to allow this. I don't use ALC, so I 
repurposed the ALC pin in the interface connector. On the control board 
I added two 1n4148 diodes, cathodes to the former ALC pin of the 
connector and anodes to the dit and dah lines that go to the paddle.
Then I connected that wire in the plug that goes to the computer serial 
port to the DTR pin.

At this point all you have to do is activate the K2 feature that allows 
simultaneous closing of the dit and dah lines to be treated as a 
straight key, and set up N1MM for DTR keying.

73,
Victor, 4X6GP
Rehovot, Israel
CWops #5
Formerly K2VCO
https://www.qsl.net/k2vco/
On 07/12/2021 23:13, edauer at aya.yale.edu wrote:
> I need advice for getting N1MM+ to play well with a K2.  I have tried it
> with two different K2 rigs:  a K2 with a KIO2, and a different K2-100 with
> the built in IO.  Same problem.  The K2 Port parameter is set to ON and N1MM
> tracks the RX frequency, so I know the rig and the computer are
> communicating.  But a keyboard command from N1MM to the rig returns the
> error message --  "Unable to send this CW because there is no CW Port set in
> Config."
> 
> But the CW box in the N1MM configuration screen IS checked, and "set," and
> config is: 4800 N 8 1 DTR and RTS Always On (and every other possible
> combination thereof); Radio on Nr 1, and PTT via radio command mode CW.  I
> have also tried every possible permutation of KIO2 and KUSB cables, on both
> rigs, in case of a badness there.  No change.  Same problem every time.
> 
> I know that when using my K3 with N1MM it's necessary to have the K3's menu
> settings for DTR and RTS set properly to CW to match the settings in N1MM .
> . . but I have found no such option in the K2 menus.  I have also read that
> it can be done using a W1EL keyer, but having outboard dongles sort of
> defeats my purpose.
> 
> Can it be done with just the K2/KIO2, a KUSB cable, and an ordinary
> computer?
> 
> Thanks, anyone.
> 
> Ted, KN1CBR
> 
>   
> 
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