Change #037 to use the USB serial port and not the back panel port. Also ensure that
CAT RTS #040 is enabled as this will permit hardware flow control with the PC.
Menu settings applicable to the serial port
When you setup HRD to connect to the rad
io ensure that the “Enhanced port” is being
used and that the speed is the same as what was set in radio option #038.
Also as shown here ensure that DTR is unchecked and RTS is checked.
Typical serial port settings
