A UHF radio service you can be on in a day — no exam, one cheap license covers your whole household, and here in Northern Colorado there are repeaters that turn a handheld into a radio with county-wide reach.
What GMRS actually is
GMRS (General Mobile Radio Service) is a licensed radio service on the UHF band around 462 and 467 MHz, regulated by the FCC under Part 95 Subpart E. It’s the “grown-up” version of the little FRS bubble-pack walkie-talkies: same neighborhood, more power, detachable antennas, and — the big one — permission to use repeaters.
A repeater is a radio sitting up high — on a mountaintop, a tall building, or a radio tower — that listens on one frequency and re-transmits everything it hears on another, instantly. Because it’s up high, your 5-watt handheld down in the valley can reach it, and it reaches everyone else for miles. That’s how a pocket radio in Loveland can talk to someone in Fort Collins, Greeley, or up a canyon — covered later on this page.
GMRS is meant for personal and family communication: coordinating a road trip or overland convoy, keeping tabs on kids around the neighborhood, staying in touch when cell service dies on a hike, and community/emergency preparedness. It is not for business dispatch or making money.
The good and the not-so-good
Pros
- No test. Pay the fee, get your callsign — you’re legal.
- One license covers the whole family — spouse, kids, parents, in-laws.
- Real power: up to 50 watts on the main channels vs. half a watt on FRS.
- Repeaters allowed — huge range through high repeater sites.
- Clear FM audio and detachable/outdoor antennas.
- Cheap, capable radios are everywhere; easy for non-hobbyists.
- Great community locally (see Front Range GMRS below).
Cons / limits
- Still a license ($35) — you can’t legally transmit without one.
- Line-of-sight UHF: terrain blocks it; no long-distance “skip.”
- Voice (FM) only — no data, email, or digital modes.
- No business use and no on-air hobby experimenting like ham.
- Repeater tones/codes are often access-controlled (you ask to join).
- Fewer channels than ham; no HF/worldwide work.
GMRS vs. Amateur (Ham) vs. CB
People usually land on GMRS after bumping into one of its neighbors. Here’s the honest comparison:
| GMRS | Amateur (Ham) | CB | |
|---|---|---|---|
| Band | UHF 462/467 MHz | HF/VHF/UHF & up (many bands) | HF ~27 MHz |
| License | Yes — no exam | Yes — exam required | None |
| Exam | None | 35–50 question test (3 levels) | None |
| Cost / term | $35 / 10 yrs | $35 FCC / 10 yrs (+ exam fee) | Free |
| Covers family? | Yes — whole household | No — individual only | N/A |
| Max power | Up to 50 W | Up to 1,500 W | 4 W AM / 12 W SSB |
| Repeaters | Yes | Yes (tons) | No |
| Digital / data | No (voice FM) | Yes — huge variety | No |
| Best for | Family, overland, prep, local | Hobby, experimenting, worldwide, emergency | Truckers, trail rigs, plug-and-play |
Short version: CB is no-license and simple but low-power and crowded. Ham is the deep end — the most freedom, but you earn it with a test. GMRS sits in the sweet spot for families who just want reliable, legal, decent-range radios without becoming a hobbyist.
GMRS on the trail: off-roading & overlanding
If you wheel Colorado’s backcountry, GMRS is the radio to have. The off-road and overland community has largely left CB behind for it — no antenna tuning, far more power (up to 50 W vs. CB’s 4 W), clear FM audio over engine and tire noise, and the ability to reach a repeater when terrain blocks a direct shot. One license covers everyone in your rig.
In Northern Colorado that plays out across the Roosevelt National Forest and Larimer County trails — Buckhorn Canyon (Buckhorn Road / CR 44H), the Red Feather Lakes and Cherokee Park roads, Pingree Park, Crown Point and the Poudre Canyon forest roads, on out to the Pawnee National Grassland. On open ground you run simplex on Channel 16; drop into a canyon or climb a ridge and the Front Range GMRS repeaters (below) take over — and fittingly, Buckhorn 700 sits on Buckhorn Mountain right above those Buckhorn Canyon trails, so a handheld down in the trees can still reach the group.
New to GMRS for the trail? Get your license (below), program Channel 16, and add the Front Range GMRS repeaters for backup when the trail turns to terrain. Headed out for a weekend? See Remote Ops & Camping for running radio off-grid — power, antennas and staying in touch from camp.
Getting your license
This is the easy part. There’s no test, no Morse code, no study — it’s basically a form and a fee.
- Get an FCC Registration Number (FRN) at the FCC CORES site. Takes a few minutes.
- Apply for the GMRS license (FCC Form 605) through the FCC ULS system and pay $35. You must be 18+ to hold the license.
- Get your callsign — usually issued within a day or two. It looks like WRXZ123.
- You’re on the air. Your license is good for 10 years and covers your entire immediate family — they just use your callsign.
One license, one fee, the whole family legal for a decade. That’s why GMRS is the go-to for households and groups.
Channels & frequencies
GMRS has 30 channels across three groups. Click any group’s arrow to see every channel’s exact frequency.
FRS/GMRS sharedCh 1–7462.5625 – 462.7125 MHz5 W · simplex
Interstitial (467)Ch 8–14467.5625 – 467.7125 MHz0.5 W · simplex
Main GMRSCh 15–22462.5500 – 462.7250 MHz50 W · outputs
Repeater inputsRPT 15–22467.5500 – 467.7250 MHz50 W · +5 MHz
The eight repeater pairs are named by the last three digits of the output: 550, 575, 600, 625, 650, 675, 700, 725. A “700 repeater,” for example, outputs on 462.700 and listens on 467.700. Your radio needs the matching channel plus the repeater’s tone/code.
How the channels actually get used
GMRS has no FCC-assigned channel purposes — any channel is fair game for any legal call. But over the years the community has settled into a few habits worth knowing:
| Channel / freq | Commonly used for |
|---|---|
| Ch 16 · 462.575 | Off-road & overland. The 4×4 world’s calling channel (4 × 4 = 16). Hail other rigs and convoys here. |
| 462.675 + 141.3 tone | Travel / calling channel. The most-used “is anyone out there?” frequency nationwide, largely because many radios ship with that 141.3 Hz tone preset. Many repeaters use this pair too. (Common practice, not a standard.) |
| Ch 1–7 | Family & neighborhood. Shared with the little FRS bubble-pack walkie-talkies, so this is where you’ll bump into other households. |
| Ch 3 · 462.6125 | Emergencies (regional). Colorado Search & Rescue promotes Channel 3 for backcountry emergencies. There’s no official GMRS emergency channel — always dial 911 first if you have signal. |
Looking for the truckers? That’s not GMRS — truckers run CB Channel 19 (27.185 MHz). GMRS and CB are different services; GMRS has no trucker channel. Everything above is community convention, so when in doubt, listen first, then call.
The people behind our repeaters: Front Range GMRS
Front Range GMRS User Group
If you can talk across Northern Colorado on a handheld, it’s almost certainly because of Front Range GMRS. They are a group of independently-owned repeaters whose operators pool their resources through an informal agreement and — this is the remarkable part — make them available to any licensed GMRS user for free. Real mountaintop, rooftop and tower infrastructure, run by volunteers, given to the community.
Joining is genuinely easy: get your GMRS license, then create a free account and verify your callsign. That unlocks each repeater’s exact tone/access codes (kept members-only so the system stays clean). They even run weekly nets — including a Kids Net to get the next generation on the air. Please go support them, follow their etiquette, and consider a donation — this site and this page exist because of what they’ve built.
Their repeaters & where they reach
Channel, site and coverage for each Front Range GMRS repeater. Every card shows the receive (listen) and transmit (input) frequency your radio needs.
The powerhouse. From a peak west of Fort Collins it’s expected to cover from southern Wyoming to the south Denver metro, and east to Brush (I-76) and Agate (I-70). Net: 2nd Tuesday, 7 PM.
| Receive (listen) | 462.700 MHz |
| Transmit (input) | 467.700 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Covers the Estes Valley and the east side of Rocky Mountain National Park, with some overlap into the Northern Colorado Front Range. The newest site in the network.
| Receive (listen) | 462.675 MHz |
| Transmit (input) | 467.675 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Wide-area coverage from Greeley down to the Palmer Divide and east past Deer Trail. Excellent on the Front Range plains; can be shadowed close to the foothills.
| Receive (listen) | 462.725 MHz |
| Transmit (input) | 467.725 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Strong metro coverage for mobiles and handhelds, plus I-70 from Central City Parkway to Strasburg and some canyon roads west of Golden. Net: 1st Tuesday, 7 PM.
| Receive (listen) | 462.600 MHz |
| Transmit (input) | 467.600 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
A cooperative site with a big CommScope DB420 antenna and strong coverage through the metro corridor. Hosts the Kids Net (2nd & 4th Friday) and the 3rd-Tuesday net.
| Receive (listen) | 462.675 MHz |
| Transmit (input) | 467.675 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
A commercial Motorola repeater on battery backup with good local metro coverage that looks into the Front Range foothills where high sites can be shadowed.
| Receive (listen) | 462.700 MHz |
| Transmit (input) | 467.700 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Cooperative Kenwood TKR-850 on battery backup covering Highway 285 from roughly Grant to Conifer and into the Pike National Forest. Net: Wednesdays, 7 PM.
| Receive (listen) | 462.550 MHz |
| Transmit (input) | 467.550 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Tremendous coverage along the Front Range from the foothills southwest of Denver. Access is as courteous guests — ID properly and be respectful.
| Receive (listen) | 462.625 MHz |
| Transmit (input) | 467.625 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
A cooperative pair covering from north of Cheyenne up to Glendo along I-25, and Hwy 26 toward Torrington. Extends the network well into southern Wyoming.
| Receive (listen) | 462.550 MHz |
| Transmit (input) | 467.550 MHz +5 MHz |
| Tone / code | Get from Front Range GMRS |
Repeater map
Approximate locations of the Front Range GMRS sites. These are fixed mountaintop, rooftop and tower sites — for exact coverage maps, see Front Range GMRS.
Click the map, then use your scroll wheel to zoom. Markers are approximate site locations, not published coordinates.
Hear GMRS on my receiver
My software-defined radio in Loveland can tune the GMRS repeater output frequencies (462 MHz, FM). Open the receiver and tune to a repeater’s channel to listen in — the “Listen on my SDR” links above jump you to the receiver. (A one-click GMRS preset is coming.)
Credit where it’s due: the repeater information on this page comes from Front Range GMRS. They built and maintain this network for the whole Northern Colorado community — please support them.