System Requirements:
A PC running
Windows 7 (32 or 64 bit),
Windows 8 or 8.1 (full version), Windows 10.

Tech Support:
Tech Support Hours:
8:00AM - 5:30PM
Mountain Time

9:00AM - 1:00PM
Mountain Time
Phone: 800-921-4834
Fax: 770-216-1836
Sales Hours:
8:00AM - 5:00PM
Mountain Time
Email Sales:

RT Systems
Product Guide
RT Systems
510 Compton St, #105
Broomfield, CO 80020
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Knowledge Base:  
Knowledge Base > Icom > IC-2820

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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.
Dual Display

This is a single band/dual watch operation radio.  Dual watch operation allows you to monitor two frequencies simultaneously.   This radio accepts the information from the memory file
Software and Cables

The blue USB-29A cable plugs into the outside speaker jack on the back of this radio. Page 9 in the owners manual will refer to this as #10 external speaker jack. (Cable is used for programming only)
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