Jack it is "sort of simple"... I was playing with N1MM's program only a few minutes ago... These are the settings I use with my K3, the serial cable is a proper 9 way RS232 cable courtesy of having a multi-serial board in my PC.

K3 set for PTT - KEY <OFF - dtr>

N1MM set for:
DTR (pin 4) = CW
RTS (pin 7) = Always Off
Radio/VFO Nr 1

Speed 19200, Parity N, Databits 8, Stop Bits 2.
NootSwitch (pin 6) = None
CW/PTT Port Addr = 3E8

I also use Winkey, but these settings work for me to key the K3 via the serial port.

73 Dave, G4AON
K3/100 #80
----------------------------------------

I just tried to interface N1MM software with my K3 using the Elecraft
USB to RS-232 cable. Problrm is that as the program comes up the PTT
line is asserted. I tried monkeying with the DTR and RTS settings
resulting that the transceiver continued to be in the transmit mode. I
could only release rig by shutting down N1MM software.

Now this must be simple! HELP !
73,
Jack, W3TMZ
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