GMRS call signs: when to say yours, family members and unit numbers

Rule text is quoted from 47 CFR Part 95 via the eCFR API (version dated 2026-10-01), checked 2026-10-21. Not legal advice.

The rule

§95.1751 says 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.” Specifically:

Requirement	Rule text	Section
When	“Following a single transmission or a series of transmissions”	§95.1751(a)(1)
Long conversations	“After 15 minutes and at least once every 15 minutes thereafter during a series of transmissions lasting more than 15 minutes”	§95.1751(a)(2)
How	“Using voice in the English language or international Morse code telegraphy using an audible tone”	§95.1751(b)
Unit numbers	“A unit number may be included after the call sign in the identification”	§95.1751
Repeaters	A repeater needn’t identify if it only retransmits stations under its own license and those stations identify properly	§95.1751(c)

A “series of transmissions” is the back-and-forth of one conversation. You don’t need to ID on every push of the PTT (push-to-talk) button. Many operators ID once at the start as a courtesy, though the rule only requires the end and every 15 minutes.

Family members and unit numbers

Who’s covered: your spouse, children, grandchildren, stepchildren, parents, grandparents, stepparents, brothers, sisters, aunts, uncles, nieces, nephews and in-laws (§95.1705(c); full list on our license page). Cousins aren’t on the list.
Age: the licensee must be 18 or older, but the FCC says any family member “regardless of age” can operate GMRS stations in your licensed system (FCC GMRS page).
One call sign, many radios. Everyone on your license identifies with your call sign. To tell radios apart, add a unit number after it, which §95.1751 explicitly allows. Example: “WXYZ123 unit 2 calling WXYZ123 unit 1.” (WXYZ123 is a made-up placeholder.) Some families use first names or words like “mobile” or “base” after the call sign instead. The rule only mentions unit numbers, but nothing in it bars other suffixes after the call sign.
Friends aren’t covered. Anyone outside the list needs their own license, except that anyone may use your station to send an emergency message (§95.1705(c)).

Simplex, repeaters and FRS users

Simplex (radio to radio, no repeater) still requires ID. The rule covers “each GMRS station.”
Repeaters: many repeater owners ask for your call sign before they share the access tone. Owners may limit who uses their repeater (§95.1705(d)); see repeaters and mobile setup.
Talking with FRS users on the shared channels is allowed (§95.1731). They don’t have call signs, and the FRS rules have no ID requirement. You still ID your own GMRS station.

Finding your call sign and what’s public

After your application is granted, your call sign is shown in the FCC’s Universal Licensing System (ULS), which also hosts the public license search (FCC ULS license search). See our license guide for the application steps.
License records are public. The FCC’s ULS help says a GMRS license record shows the “name of the individual or business entity holding the license, its address, and other contact information” (ULS License Search help, GMRS). Its License Manager help adds: “The FCC will display your name and address on your license” (ULS License Manager help). That worries some new licensees, and r/gmrs has a long thread on it (Terrified to use call sign!). Members commonly suggest a PO box. The FCC’s requirement, per the same help page, is a “current and valid mailing address in the United States” where it can send your license and correspondence. If you don’t respond to mail sent there, your application can be dismissed or your authorization revoked.
Keep it current. Your license lasts 10 years; renew between 90 days before expiry and the expiry date (FCC GMRS page).

A simple pattern that meets the rule

Make your call: “WXYZ123 unit 1 calling unit 2” (or just “Unit 2, unit 1”).
Talk normally. You don’t need to say the call sign on each transmission.
When you finish, or at 15 minutes: “WXYZ123 clear.”

Other on-air rules worth knowing

From §95.1733 and §95.333:

No “coded messages or messages with hidden meanings.” Ten-codes are explicitly allowed.
No music, sound effects or “material to amuse or entertain.” No ads.
No “continuous or uninterrupted transmissions,” except for immediate safety of life or property.
No messages to ham stations except in an emergency.
No obscene or profane language, and no intentional interference.

The FCC also asks GMRS users to share channels with a “listen-before-talk” approach, since no channel belongs to any one user (FCC GMRS page).

Common questions

Do I have to say my call sign after every transmission?

No. §95.1751(a) requires it “following a single transmission or a series of transmissions,” and after 15 minutes and at least every 15 minutes during a longer series. In practice that means once when you finish a conversation, plus every 15 minutes if it runs long.

Does my spouse or child use my call sign?

Yes. Immediate family members operate under your license (§95.1705(c)), so they identify with your call sign. The FCC says any family member “regardless of age” can operate the stations in your licensed system. §95.1751 lets you add a unit number after the call sign to tell people apart.

Do I need to ID on simplex, or only on repeaters?

Both. §95.1751 says “each GMRS station must be identified,” with no exception for simplex (radio-to-radio). The only exception is for a repeater retransmitting stations under its own license that identify themselves.

How long until I get my call sign?

The FCC doesn’t publish a processing time on its GMRS page. Once the license is granted, your call sign appears in the FCC’s Universal Licensing System (ULS). r/gmrs members commonly report getting theirs within a day or a few days of applying, but that’s anecdotal.