Rules note: You need an FCC license to transmit on GMRS (47 CFR 95.1705). Use only FCC-certified GMRS radios, and stay within the power and channel limits for your station type. This is general information, not legal advice. The eCFR text of Part 95 Subpart E is the authority.
You’ve found a GMRS repeater on a hill near you. Here’s how to get on it properly: permission, programming, a test, and the on-air habits the rules expect. For how repeaters work, see GMRS repeaters explained.
On this page
Before you start
- License: you need your own GMRS license, unless you’re an immediate family member operating under the licensee’s (95.1705). See how to get a GMRS license.
- Radio: it must be GMRS-certified and able to transmit on the 467 MHz main channels with a tone. Look for “repeater capable” or “8 repeater channels” on the spec sheet, as with Midland’s GXT67 Pro, MXT275 and MXT575 (GXT67 Pro, MXT275, MXT575).
Step 1: Ask the owner
Repeaters are privately run. The owner may let anyone use the repeater, limit it to specific people, or block specific users (95.1705(d)). Contact them through the club or directory where you found the repeater. Ask for:
- The output frequency.
- The input tone (CTCSS or DCS).
- Any output tone.
- Any house rules, such as hours or emergency-only channels.
Step 2: Program your radio
| Setting | Value |
|---|---|
| Receive | Repeater output: a 462 MHz main channel, e.g. 462.6750 |
| Transmit | Input = output + 5 MHz, e.g. 467.6750 |
| Transmit tone | The owner’s input tone, e.g. 141.3 Hz |
| Receive tone | The output tone, if any, or none (carrier squelch) |
Frequencies follow 95.1763(a) and (c). On radios with numbered repeater channels (often “RP15–RP22”), pick the channel whose output matches, then set the tones. Our repeater planner prints these settings for you.
Step 3: Listen, then test
- Listen on the output for a while to learn the regulars and the style.
- If the channel is quiet, make a short test: “This is [call sign], testing.” Brief test transmissions are permitted (95.1731(b)(3), 95.319(c)).
- Listen for the repeater’s carrier tail or courtesy tone after you unkey. That confirms you got in.
No response? Check the tone, the transmit offset and your antenna, or move higher.
Step 4: Talk like a good neighbor
- Listen before you talk. The FCC says licensees must cooperate under a “listen-before-talk” etiquette, because no channel belongs to any one system (FCC, 95.359).
- Leave gaps between exchanges so others, especially emergency traffic, can break in. Emergency communications always have priority (95.1731(a)).
- Keep it short. Repeaters often time out on long transmissions, and continuous transmissions are prohibited except for immediate safety of life or property (95.1733(a)(10)).
- Identify with your call sign at the end and at least every 15 minutes (95.1751).
- No music, ads or entertainment (95.1733(a)).
Step 5: Don’t expect linked coverage
Some users expect repeaters to be networked over the internet. The FCC says internet-linked GMRS repeaters that carry communications violate 95.1733(a)(8) and 95.1749 (FCC). Expect local coverage only.
Example exchange
“[Call sign] unit 1, monitoring.” (pause) “[Call sign] unit 1, this is [second call sign]. Good copy, you’re full quieting here.” “Thanks, just checking in from the trailhead. [Call sign], clear.”
Short transmissions, a pause before replying, and each station identifying at the end.
Troubleshooting
| Symptom | Likely cause |
|---|---|
| You hear the repeater, but it doesn’t hear you | Wrong input tone, wrong offset, or too far and too low |
| You hear nothing, but others say it’s active | Receive tone set when the repeater sends none, or the wrong one |
| Choppy audio | Marginal path. Get higher or use an external antenna |
| You get in only sometimes | Your handheld is at the edge of coverage |
Programming several repeaters
If you travel or live between coverage areas, store each repeater in its own memory channel with its output, its +5 MHz input and its tones. Many radios label repeater channels RP15–RP22 and don’t let you rename them, so keep a printed card with each repeater’s location, owner contact and tone. Delete or update entries when an owner changes tones or takes a machine off the air. Before relying on a repeater, check it again from where you’ll actually be. A repeater that’s easy to reach from a hilltop may be out of range from a valley a few miles away. Remember that every 462 MHz main channel shares its frequency with simplex users and FRS radios on channels 15–22 (95.563), so expect other traffic.
FAQ
Can I hand a radio to a friend to use on the repeater?
Only if they’re your immediate family, or they’re sending an emergency message (95.1705(c)). Otherwise they need their own license.
Can I use privacy codes on a repeater?
Repeater access tones are privacy codes (CTCSS/DCS). They control access; they don’t encrypt anything.
Is it OK to just “kerchunk” a repeater?
A brief, identified test is allowed. Repeated unidentified keying is not good practice and may count as interference (95.333(d)).