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
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