GMRS Channels and Frequencies: Which Ones to Use

On this page (8 sections)

1. Which GMRS channels should you use?
2. What frequencies do GMRS channels use?
3. How do GMRS privacy codes work?
4. When should you use a GMRS repeater channel?
5. Do channels determine how far a GMRS radio reaches?
6. Which GMRS radios can help you use these channels?
7. What should you check before transmitting?
8. Which GMRS channels should you choose?

GMRS channels 1–7 and 15–22 are for standard radio-to-radio use, while channels 15–22 also carry the main GMRS repeater inputs. Channels 8–14 use lower power, and privacy codes don't make a channel private.

For a basic group call, pick an allowed channel, set every radio the same way, and check that your group is within range. Use a repeater channel only when you have access to a repeater and know its settings.

Which GMRS channels should you use?

Use channels 1–7 or 15–22 for regular GMRS radio-to-radio calls. Keep the same channel and privacy code on every radio in your group.

Channels 8–14 are lower-power channels intended for handheld radios. They're useful for short-range conversations when everyone is nearby, but they're not a substitute for a repeater.

Channels 15–22 can also be used to reach a compatible repeater. A repeater receives a signal on one frequency and retransmits it on another, which can extend communication when the repeater is within reach and configured correctly.

If you're learning the service itself, start with what GMRS is and who needs a license. A license is generally required for GMRS use in the United States.

What frequencies do GMRS channels use?

Each GMRS channel number corresponds to a specific frequency or frequency pair. Radios may label a channel by number, while their manuals show the underlying frequencies.

The frequency chart in your radio manual is the practical reference for its channel labels. For repeater use, look for both the transmit and receive frequency, often shown as an input and output pair.

A channel number alone doesn't tell you whether a repeater is available nearby or whether your radio is set to use it. Check the repeater's published channel and access requirements before transmitting.

How do GMRS privacy codes work?

Privacy codes don't give you a private frequency. They tell your radio which incoming signals to play through its speaker.

A code can reduce the chatter you hear from other users on the same channel, but those users may still hear your transmission. Anyone with a compatible radio and no matching code, or with the same code, may receive it.

Some radios call these settings privacy codes, while others use terms such as CTCSS or DCS. Set the code to match across your group, or use no code if you want to hear all traffic on that channel.

For a similar explanation of channel and code settings on other handheld radios, see walkie-talkie channels and privacy codes.

When should you use a GMRS repeater channel?

Use a repeater channel when a compatible repeater is in range and you have its access settings. A repeater can retransmit your signal from a better location, but it doesn't guarantee a connection.

Channels 15–22 are the main GMRS repeater channels. The repeater owner may require a particular tone or code, and radios in your group must use settings that match the repeater.

A repeater can help when hills, buildings, or distance block direct radio-to-radio communication. Read what a GMRS repeater does and whether you need one before choosing a channel for repeater use.

Do channels determine how far a GMRS radio reaches?

A channel number doesn't set a guaranteed communication distance. Range depends on terrain, antenna height, obstacles, radio setup, and whether a repeater is available.

A direct handheld call usually relies on a clear path between radios. Hills, dense trees, buildings, and low antenna height can reduce the distance, even when both radios are set to the same channel.

A repeater can improve coverage in some areas, but only if your radio can reach it and you use the right settings. See how far a GMRS radio can reach for more on the factors that affect range.

Which GMRS radios can help you use these channels?

A GMRS radio with clear channel controls can make it easier for your group to choose a shared channel and set codes consistently. These 2-pack options include channel controls for handheld use.

The Midland GXT1000VP4 includes 50 channels and 142 privacy codes, along with rechargeable battery packs and a desktop charger.

The Midland GXT3000 also has 50 channels and 142 privacy codes. Its listed features include repeater capability and USB-C charging.

The Retevis RB48 Plus has 30 channels and is repeater capable on 8 channels. It also has dual large push-to-talk buttons.

Before a trip, agree on the channel and code, then confirm each radio can select those settings. For a broader comparison, see the best GMRS handheld radios.

What should you check before transmitting?

Confirm your radio, channel, and license rules before transmitting. Use the radio manual for channel options and the FCC's current GMRS rules for legal requirements.

In the United States, GMRS generally requires an FCC license. The FCC's GMRS information and rules explain licensing and operation.

Keep messages brief and listen before you speak. If another group is already using the channel, choose another channel that your group can use consistently.

Which GMRS channels should you choose?

For a direct group call, choose a channel from 1–7 or 15–22 and match the settings on every radio. Use channels 8–14 for lower-power handheld communication.

For repeater use, pick a supported channel from 15–22 and follow the repeater's access instructions. If you need help deciding whether repeater access would improve your coverage, start with the GMRS repeater guide.

Frequently asked questions

What GMRS channel should I use?

For a simple radio-to-radio call, choose a channel from 1–7 or 15–22, then make sure everyone in your group selects the same channel and privacy code. Channels 8–14 are lower-power channels.

If you're using a repeater, choose a repeater channel supported by that repeater and follow its access instructions.

Are GMRS channels 1–22 the same frequency on every radio?

The standard GMRS channel numbers map to set frequencies, but radios can differ in which features or channel options they offer. Check your radio's manual for its channel chart, especially for repeater use.

Everyone in the group must use compatible channel settings to communicate.

Do GMRS privacy codes make a channel private?

No. Privacy codes are tone or digital squelch settings that help a radio ignore calls without the matching code.

Other people can still use the same frequency and may hear your transmission.

Use a code to reduce unwanted radio noise, not to protect a private conversation.

Can I use GMRS channels without a license?

In the United States, GMRS operation generally requires an FCC license, with certain exceptions for emergency communications. A license covers the licensee and eligible immediate family members.

Review current FCC rules before transmitting, since permitted use and technical limits depend on the service rules.