[Elecraft] K2 connecting to N1MM on Laptop

[Don Wilhelm]

Ray,

The cable is a 3 wire, not a 4 wire.
Yes, the shield is connected to pin 1 at the K2 end, but the shield 
should not connect to anything at the KUSB to serial adapter end.  The 
shield is used as a Faraday Shield by connecting to ground at only one end.

Is that possibly your problem.

Make sure the N1MM+ baud rate is set to 4800 baud and not its default.

You might try connecting with something more simplistic than N1MM+.  Try 
a terminal application running on the PC and see if the commands listed 
in the KIO2 manual produce good results.

73,
Don W3FPR

On 7/28/2019 4:43 PM, Ray S via Elecraft wrote:
> Hi Don
> Yes, I guess I was expecting to be able to assign the COM port in the K2. However I followed your suggestion & the laptop assigned COM3 to the USB/RS232 adaptor & confirmed that the driver is OK & the device is working.
> But when I connect the K2 to the 4 wire cable, open N1MM+ & enter COM3 in the N1MM Config/Hardware tab it doesn’t recognize the K2 frequency etc. Maybe I’d better check the cable before anything else.
> 73 Ray G3XLG