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Communication Timeout Error - IC-2820

If you are using the orange colored USB-RTS05 cable, this error may indicate that the radio's data port has been disabled. Plugging a cable into the radio's speaker jacks will disable the data port.
Cable Selection for Programming
On some Icom radios the USB-29A and the USB-RTS05 cables are offered for programming. This comparison will help you decide between the two cables. USB-29A
RT Systems Programmers for the Mac Operating System

RT Systems is proud to announce release of these programmers for the Mac operating system. These programmers will continue to be maintained for Windows and the Mac. As each of the programmers i