17 Feb
2019
17 Feb
'19
4:48 p.m.
If the cable is a USB, why are you using COM3?
Because the programming cable is manufactured with a USB-to-Serial chip that, when used with a compatible device driver, creates a virtual COM port. This is necessary because virtually all radios programmed by CHIRP use serial communications and it is rare to see a modern computer with a legacy serial port.
Jim KC9HI