Say your GMRS call sign at the end of a conversation, and every 15 minutes if the conversation runs longer. That's the whole requirement in 47 CFR 95.1751. Family members on your license use your call sign too, and the rule lets them add a unit number so everyone knows who's talking.
The rule, quoted
Here's the core of 95.1751, word for word from the eCFR (current as of October 1, 2026):
"Each GMRS station must be identified by transmission of its FCC-assigned call sign at the end of transmissions and at periodic intervals during transmissions except as provided in paragraph (c) of this section. A unit number may be included after the call sign in the identification."
Paragraph (a) then spells out the timing. The call sign goes out:
- following a single transmission or a series of transmissions, and
- after 15 minutes, then at least once every 15 minutes, during a series that lasts longer than 15 minutes.
Paragraph (b) covers the method: voice in English, or international Morse code sent as an audible tone. Paragraph (c) is the repeater exemption, covered further down.
Notice what the rule doesn't say. It doesn't require the call sign at the start of a conversation, on every push of the talk button, or in phonetics. Plenty of operators do all three, and that's good manners, but it's practice, not law.
What "a series of transmissions" looks like
A series is one conversation: you call, they answer, you go back and forth. You identify once when it ends. If it drags past 15 minutes, you also identify at the 15-minute mark and every 15 minutes after.
Say it like this
These scripts all meet the rule. Put the one you use on a card in the radio case, or on the printable GMRS channel card, which has blank lines for your group's call signs.
| Situation | Script |
|---|---|
| Calling someone | "Dad, this is Sam." (Optional to add the call sign here; most people do.) |
| Ending a conversation | "Copy, see you at camp. WRXX123 clear." |
| Family member on your license | "Heading back now. WRXX123 unit 3." |
| Long trail day, at the 15-minute mark | "WRXX123 unit 1, still with you." Then carry on. |
| With phonetics (clearer on a weak signal) | "Whiskey Romeo X-ray X-ray One Two Three." |
WRXX123 is a made-up example pattern, not a real call sign.
Two practical notes. First, a unit number is only useful if the whole family agrees on who is which number, so write it down. Our family emergency radio plan has a line for each person's unit number. Second, when two licensed households talk to each other, each one identifies with its own call sign. Nobody IDs for the other station.
Who can use your call sign
The license is in your name, and 95.1705(c)(2) lets you allow your immediate family to operate your GMRS stations. The rule lists them: spouse, children, grandchildren, stepchildren, parents, grandparents, stepparents, brothers, sisters, aunts, uncles, nieces, nephews and in-laws. They identify with your call sign because they're operating your station.
Friends are a different case. A friend who isn't family can't transmit on your license for everyday use. They need their own license, and then they use their own call sign. The exception is an emergency: under 95.1705(c)(3) you may let anyone operate your station when it's needed to send an emergency message.
You stay responsible either way. Paragraph (b) makes the licensee responsible for proper operation at all times, and paragraph (d)(1) says the licensee decides which individuals may operate. If a child on your license forgets to identify, that's on you.
What the call sign looks like
The FCC assigns the call sign when it grants your license. You don't pick it, and GMRS has no vanity call sign option (that's an amateur radio thing). Licenses issued in recent years typically carry four letters and three numbers. Some very old licenses still in renewal use other patterns.
The license lasts 10 years from grant or renewal (95.1705(e)), and the call sign stays with you through renewals. If you don't have one yet, start with how to get a GMRS license. The application fee is $35 (47 CFR 1.1102), and the FCC fee page lists no separate regulatory fee for GMRS. No exam.
How to look up a GMRS call sign
All GMRS licenses are public records in the FCC's Universal Licensing System (ULS).
- Open the ULS license search.
- Search by call sign, or by name if you're looking up a person (last name first works best).
- In the advanced search, set the radio service to ZA, the FCC's code for GMRS. That filters out ham and business licenses with similar names.
- Open the record. It shows the licensee, the grant and expiration dates, and whether the license is active.
Lost your own call sign? The same search by your name finds it. The ULS also lets you log in and download the official license PDF.
Repeaters and automatic ID
When you talk through a repeater, you still identify your own station as usual. The repeater itself gets a pass in one situation: under 95.1751(c), it doesn't have to send its own ID if it only retransmits stations operating under its owner's license and those stations identify properly. A repeater open to other licensees has to identify, which is why most send a Morse ID on a timer. Our guide to finding and using GMRS repeaters covers access tones and permission.
Some radios can send your call sign in Morse automatically after you release the talk button. That's legal under 95.1751(b) and handy for people who forget, though it gets old on a busy channel. Identifying at the end and every 15 minutes is all the rule asks for.
Common mistakes
- Forgetting it entirely. The single most common rule slip on GMRS, and an easy one to fix with a habit: last thing you say, every time.
- Using a ham call sign on GMRS. A ham license doesn't cover GMRS, so the ham call sign isn't a GMRS ID. See can I use GMRS with a ham license.
- Using made-up handles instead of the call sign. "Trail Boss" is fine as a name, and you still need the call sign at the end.
- Letting a non-family friend use your call sign for the weekend. They need their own license.
For the on-air habits that go with the ID rule (listening first, radio checks, repeater manners), read our GMRS radio etiquette guide.
Sources: 47 CFR 95.1751, 95.1705, 1.1102 (eCFR, up to date as of October 1, 2026); FCC fee page; FCC ULS. Rules checked: October 3, 2026. How we research · Affiliate disclosure