What is Project GMRS?

Project GMRS connects radio operators through 76 pages for profiles, club forums, messages, repeater tools, contact logs, and secure member access.

All tools

Frequency Calculator

Calculate repeater input/output frequencies and offsets. Informational only.

Enter the output frequency

GMRS Frequency Preset

Offset (MHz)

Offset Direction

Input Frequency

467.550 MHz

Output = 457.550 MHz · Offset +5.000 MHz

GMRS repeater channels (15–22) use a +5.000 MHz offset: output 462.550–462.725 MHz, input 467.550–467.725 MHz.

These tools provide estimates and general information for educational and planning purposes. They do not replace FCC rules, official licensing information, equipment documentation, or professional engineering advice. Always operate within applicable laws and regulations.