Hi Ashhar,
Doesn't work yet. Pulled FTDI cable and replaced it with the usb cable connected to the Arduino nano. Set up wsjt-x as instructed - baud rate at 38,400.Test button fails for every combination possible.
Went to device manager for usb Serial and it says the drivers for this device not installed. I have it search automatically for the driver, but it can't find one. Not sure if this is the problem or not. I am using a usb sound card for audio in and out - that seems to work fine. The USB connection should be ok as I used it to upload the updated sketch.
73, Dennis
W7DRW