Channels & Frequencies

GMRS uses 30 channels in the UHF 462/467 MHz band. Channels 1-22 are shared with FRS, while the 8 repeater input channels (15R-22R) are GMRS-only.

Channels 1-7: Interstitial (shared with FRS)

General-purpose channels. FRS radios can use up to 2W; GMRS radios up to 5W.

Channel	Frequency	GMRS Power	FRS Power	Notes
1	462.5625	5W	2W	Shared
2	462.5875	5W	2W	Shared
3	462.6125	5W	2W	Shared
4	462.6375	5W	2W	Shared
5	462.6625	5W	2W	Shared
6	462.6875	5W	2W	Shared
7	462.7125	5W	2W	Shared

Channels 8-14: Low-power interstitial (shared with FRS)

Low-power only. Limited to 0.5W for both FRS and GMRS. Good for close-range, quiet channels.

Channel	Frequency	GMRS Power	FRS Power	Notes
8	467.5625	0.5W	0.5W	Shared
9	467.5875	0.5W	0.5W	Shared
10	467.6125	0.5W	0.5W	Shared
11	467.6375	0.5W	0.5W	Shared
12	467.6625	0.5W	0.5W	Shared
13	467.6875	0.5W	0.5W	Shared
14	467.7125	0.5W	0.5W	Shared

Channels 15-22: Main channels (repeater-capable)

The workhorse channels. GMRS radios can transmit up to 50W and use repeaters. FRS radios are limited to 2W simplex.

Channel	Frequency	GMRS Power	FRS Power	Notes
15	462.5500	50W	2W	Shared, repeater-capable
16	462.5750	50W	2W	Shared, repeater-capable
17	462.6000	50W	2W	Shared, repeater-capable
18	462.6250	50W	2W	Shared, repeater-capable
19	462.6500	50W	2W	Shared, repeater-capable
20	462.6750	50W	2W	Shared, repeater-capable
21	462.7000	50W	2W	Shared, repeater-capable
22	462.7250	50W	2W	Shared, repeater-capable

Channels 15R-22R: Repeater input (GMRS only)

These are the input frequencies for repeaters, paired with channels 15-22. The standard offset is +5 MHz. These channels are not available to FRS.

Channel	Input Freq	Output Freq	GMRS Power	Notes
15R	467.5500	462.5500	50W	GMRS Only
16R	467.5750	462.5750	50W	GMRS Only
17R	467.6000	462.6000	50W	GMRS Only
18R	467.6250	462.6250	50W	GMRS Only
19R	467.6500	462.6500	50W	GMRS Only
20R	467.6750	462.6750	50W	GMRS Only
21R	467.7000	462.7000	50W	GMRS Only
22R	467.7250	462.7250	50W	GMRS Only

Simplex vs. Repeater

Simplex means radio-to-radio on a single frequency. Both sides transmit and receive on the same channel. This is how most FRS and basic GMRS communications work.

Repeater operation uses two frequencies. You transmit on the input frequency and the repeater rebroadcasts your signal on the output frequency from a high location, greatly extending your range. Only channels 15-22 support repeater operation on GMRS.