Get the free Family Emergency Plan PDF before you buy.
One page. Out-of-area contacts, two meeting points, utility shutoffs, medical info, and a 5-needs checklist. Keep it with your kit.
✓ Check your inbox.
Plan is on its way. Browse the full ReadyFive checklist →
How to Find GMRS Repeaters: Directories, Scanning, and Access Codes
A pair of 5-watt GMRS handhelds on simplex tops out around 1–3 miles in suburban terrain. A well-sited repeater on channels 15–22 stretches the same two radios to 25–50+ miles line-of-sight. This guide covers the three repeater directories every GMRS household should know, how to scan for local activity, and how to request an access code from a closed repeater owner.
Why Repeaters Matter
A pair of 5-watt GMRS handhelds on simplex typically reaches 1–3 miles in suburban terrain — closer to 5 miles on open water or flat farmland, but rarely more between houses. That is fine for next-door or one-block comms, but it falls short when you want to coordinate a school pickup across town, talk to a family member 15 miles away, or stay in touch with a neighborhood group during a sustained outage. A repeater solves exactly that problem.
A repeater is two radios connected to a tall antenna: one listens for incoming handhelds, the other re-broadcasts the audio at high power from hundreds of feet up. With the FCC's standard +5 MHz offset on GMRS channels 15–22 (your handheld transmits 5 MHz higher than it receives), one well-sited repeater on a tall building, ridge, or water tower can cover 25–50+ miles line-of-sight. The trade-off is that the repeater is owned and operated by a third party, and you need to know which channel and tone to use — or, for closed repeaters, get a private access code from the owner.
Three online directories (MyGMRS, RepeaterBook, RFinder) catalog every GMRS repeater in North America. This guide walks through what each one does well, how to scan for live local activity, how to read the CTCSS tone column in a directory listing, and how to ask a closed-repeater owner for a private access code. For everything about programming the chosen channel and tone into your radio, see How to Program a GMRS Radio. Already licensed? If not, walk through how to get your GMRS license in 20 minutes for $35.
Open MyGMRS.com, type your ZIP code, and you will see a list of every GMRS repeater within roughly 50 miles. Each entry shows the output channel, the CTCSS tone, and the operating status. Pick the nearest open repeater (no private code required) and you have a starting point for testing. The rest of this guide covers the directories in more detail and explains how to actually talk through the repeater once you have picked one.
Three Repeater Directories Worth Knowing
Three online tools catalog GMRS repeaters. They overlap in coverage but differ on cost, interface, and update cadence. Most prepper households use MyGMRS as the primary lookup and add one of the others only if a specific need appears.
MyGMRS.com (Community Directory — Free)
The default community directory for U.S. GMRS repeaters. Search by city or ZIP code and you get a list of nearby repeaters with their output channel, +5 MHz input offset, CTCSS tone, status (open / closed / private), and the owner's contact info where published. Free to use, no account required for lookups. Listings are maintained by the repeater owners themselves, so coverage in metro areas is excellent and rural coverage is patchier.
- Best for: family and neighborhood use, looking up the closest open repeater, contacting a closed-repeater owner.
- Limitations: U.S. only; listings can go stale if an owner stops updating; no offline mode.
RepeaterBook.com (Broad Coverage — Free)
The broadest free repeater directory in North America. Covers GMRS, amateur (HAM), and commercial repeaters nationwide. Search results show coordinates and the distance/bearing from your search point — useful for confirming line-of-sight to a candidate repeater. Listings include coverage maps for many popular repeaters. Cross-band links from GMRS to HAM (and back) often appear here first.
- Best for: cross-band GMRS-to-HAM setups, traveling across the country, picking repeaters by coordinates when no MyGMRS listing exists.
- Limitations: CTCSS tone field is sometimes empty; UI is denser and less GMRS-focused than MyGMRS.
RFinder (Paid — Web / iOS / Android)
The paid option ($9–15/year for the Android app, similar tier on iOS) with real-time status updates and international coverage. If you travel outside North America, RFinder covers GMRS-equivalent services in Europe and Oceania. The app caches listings for offline use — useful for travel into cell-dead zones. The biggest upside is the live status field: RFinder shows whether a repeater was active in the last few minutes.
- Best for: international travelers, anyone who wants verified-live status before driving to a hilltop test site, mobile-app-first users.
- Limitations: paywall; smaller directory than MyGMRS for plain GMRS-only households.
Most prepper families start on MyGMRS. Add RepeaterBook when you travel or want HAM cross-band options. Add RFinder only when you specifically need international coverage or live status data on the road.
Simplex vs Repeater Offsets
A quick recap, since simplex vs repeater terminology carries through every step below. Simplex is one frequency used for both transmit and receive: radio-to-radio, no middleman. A repeater is two frequencies: your radio transmits on the input (5 MHz higher than the channel displays), the repeater re-broadcasts on the output (the displayed channel). This split is what lets a single repeater cover 25+ miles while two handhelds on simplex cover 1–3.
When to Use Simplex
Both parties are inside radio range of each other (typically 1–3 miles suburban, 5 miles line-of-sight). Simplex uses any GMRS channel 1–22 with no offset, no CTCSS tone required for an open conversation, and no access code. Simplex is the always-free default. Every prepper-family channel plan starts with a primary simplex channel (most families pick 16 or 18) and only programs a repeater as a secondary option.
When to Use a Repeater
One or more parties are outside simplex range — spread across a metro area, separated by hills or dense urban blocks, or coordinating a school pickup 15–25 miles from home. Programming a repeater requires: the output channel (e.g., 462.6250 MHz / CH 18), Duplex set to + (the FCC +5 MHz offset), and the published CTCSS tone. For the full chart of channels 15–22, see How to Program a GMRS Radio.
How to Scan for Local Activity
A directory tells you which repeaters exist on paper. Scanning tells you which repeaters are actually busy in your area — a far more useful answer for picking a primary. The four-step walkthrough:
Set your radio to scan channels 15–22
Channels 15–22 are the eight repeater-capable GMRS-only channels. Program all eight memory slots at 462.5500 / 462.5750 / 462.6000 / 462.6250 / 462.6500 / 462.6750 / 462.7000 / 462.7250 MHz, Duplex set to +, and Tone Mode set to None (so the squelch opens on any incoming signal). Most Baofeng and Midland handhelds scan the eight slots in roughly 1–2 seconds per cycle.
Use dual-watch or scan mode
On a Baofeng BF-F8HP, hold the SCAN key on the side of the radio to start scanning. On a Midland GXT1000, press the SCAN button on the front face. Dual-watch mode (available on most GMRS handhelds) keeps the radio hopping between two priority channels while idle — a useful variant for normal everyday use once you have picked a primary repeater.
Monitor for 20–30 minutes during peak time
Evening rush hour (5–7pm) and weekend mornings are the busiest GMRS windows in most metro areas. Sit in scan mode during one of these windows with the radio near a window or outside. Log every channel where you catch a live conversation, plus the callsign of any operator and the time. Two or three hits across eight channels is normal; ten hits across two channels means you have hit a busy open repeater.
Log the live repeaters
Cross-reference your live-repeater log against the MyGMRS.com listing for your ZIP code. The live ones you just heard should appear in the directory under their listed channel and tone — if the directory says 'Private' or 'Closed' but you heard traffic, the owner has not updated the listing. The logged live channels are your shortlist for next-step programming.
For radios already programmed with CHIRP (covered in How to Program a GMRS Radio), use the Live Monitor feature on each of the eight repeater-capable channels. CHIRP's Live Monitor listens passively on a chosen frequency without transmitting — the right tool for scanning work where you want to hear traffic without broadcasting your callsign on every channel in turn.
GMRS Repeater Access Codes (CTCSS)
A CTCSS (Continuous Tone-Coded Squelch System) tone is a sub-audible analog tone between 67.0 and 254.1 Hz transmitted under your voice. The repeater listens for the tone and only re-broadcasts your signal when your tone matches the configured code. Two flavors exist:
Open Repeaters
The repeater owner publishes a tone (commonly 100.0 Hz, 141.3 Hz, or 156.7 Hz in the U.S.) and anyone can use the repeater after programming the tone into their radio. MyGMRS listings for open repeaters show the tone in the 'Tone' column. No code request required — just program and transmit. Open repeaters are the right starting point for any family that wants repeater coverage.
Closed Repeaters
The owner keeps the tone private and assigns each authorized user a code. Closed repeaters exist because owners want to limit traffic to a known group (a neighborhood watch, a search-and-rescue team, a club), keep casual users from tying up the machine, or avoid coordinating with operators who do not share their operating habits. Closed repeater listings on MyGMRS typically show 'Private' in the tone column and a contact method for the owner.
How to read the Tone column on MyGMRS: an empty or 'None' value is rare in practice but means no tone required. A value like 100.0 or 141.3 is the CTCSS tone in hertz — enter that exact number in CHIRP's Tone Mode column. A value like D023N is a DCS digital code — less common on GMRS but the same idea.
For closed repeaters, the process for getting a private code is straightforward:
- Find the listing on MyGMRS. Look for a contact form, email address, or 2-meter amateur calling frequency the owner monitors.
- Send a polite note including your callsign, your general location, and why you want access (family emergency prep is a common reason and rarely refused).
- Wait for the owner to reply with a private code. Most owners reply same-day to within a week.
- Program the private code into your radio. The repeater is now on the air for you.
Programming the Repeater Into Your Radio
Once you have your local repeater's output channel, +5 MHz offset, and CTCSS tone, the actual install into your radio takes about five minutes with CHIRP. The full 6-step walkthrough — cable selection, COM port, channel plan, tone entry, and repeater test — lives in How to Program a GMRS Radio.
Pre-loaded with this guide's data (e.g., 462.6250 MHz output, Duplex +, Tone 100.0 Hz), step 4 of the programming guide walks you through adding that row to your channel plan and uploading to the Baofeng. Use CHIRP's Live Monitor on the new repeater channel immediately after upload to confirm you hear traffic before transmitting.
Three radios and antennas ready for repeater work
A radio capable of +5 MHz offset and CTCSS tone entry is the baseline. A Nagoya NA-771 antenna upgrade can mean the difference between "we can barely reach the repeater" and "we reliably reach the repeater" from inside a house.
Frequently Asked Questions
Track your family's repeater coverage in ReadyFive
The Communications items in the ReadyFive checklist include licensed GMRS radios, NOAA weather radio, signal mirrors, written rally points, and out-of-area contact setup — with Amazon affiliate links to get each one. Build your full communications kit alongside water, food, shelter, and medical in one place.
Open Communications Checklist →Free printable: the family emergency plan
you'll actually fill out.
One page. Covers emergency contacts, meeting points, utility shutoffs, medical info, and a 5-needs quick checklist. Print it, keep it in your go-bag.
✓ Check your inbox.
Plan is on its way. Explore the full ReadyFive checklist →
More Survival Guides
The $50 Bug Out Bag
10 affordable items for a functional 72-hour kit
Apartment Prepping
Space-saving survival strategies for renters
5 Things Preppers Forget
Critical gaps that 90% of beginners miss
Water Purification 101
5 methods compared for emergency water treatment
Get Home Bag Essentials
15 items for the bag that lives in your car
Emergency Food That Tastes Good
10 shelf-stable picks you would actually eat
Emergency First Aid
6 scenarios for when 911 isn't an option
Long-Term Food Storage
Shelf life charts, mylar bags, forever foods, and building toward a 1-year supply
🐾 Pet Disaster Preparedness
The emergency plan most prepping guides skip. Carriers, food, vet records, pet-friendly evacuations.
⚠️ Civil Unrest Preparedness
Shelter-in-place protocol, communication plans for when phones fail, and a 30-item readiness checklist.
☢️ Nuclear Danger Preparedness
Fallout physics, the 7-10 rule, potassium iodide dosing, CBRN gear, and a 30-item readiness checklist.
⚡ Best Solar Generators 2025
12 models reviewed across 4 price tiers — apartments to whole-house backup. Honest pros/cons and current prices.
💧 Best Water Filters for Emergencies 2026
12 models across 4 tiers — from $20 portable straws to $350 countertop systems. Sawyer Mini, Grayl GeoPress, Berkey Big.
Emergency Kit for Renters
Compact, apartment-legal, and portable. $50/$100/$200 budget tiers covering water, food, warmth, and comms for 1–4 people.
🔥 Fire Starters Buyer's Guide
9 methods ranked by reliability — matches, lighters, ferro rods, fatwood, and friction. 3-tier product table with Amazon links.
🐾 Pet Bug Out Bag
18 essential items for cats and dogs — food, water, meds, carrier, and documents in a single grab-and-go kit.
👧 Kids Get Home Bag
16 essential items for your child's emergency kit — contact card, directions, water, food, first aid, and comfort items for ages 5–12.
📻 Emergency Communications
GMRS radio for families — no exam, $35 license, 25-mile range. Compares FRS, GMRS, HAM, and satellite options.
📻 Best GMRS Radios 2026
6 handhelds compared on real-world range, battery life, and price — Midland, Motorola, Baofeng and more.
📻 How to Get Your GMRS License
Step-by-step FCC ULS walkthrough: FRN registration, $35 fee, callsign, Form 605 — no exam required.
🎛 How to Program a GMRS Radio
CHIRP and RT Systems walkthrough for Baofeng BF-F8HP — channels, CTCSS tones, +5 MHz repeater offset, and the 4 beginner mistakes to avoid.
🛰 Best Satellite Messengers 2026
5 satellite messengers compared on price, weight, two-way text, and monthly cost — Garmin, Zoleo, SPOT, Bivystick.
📻 Best FRS Radios 2026
3 license-free walkie-talkies for grab-and-go kits — Motorola T600, Midland T50, Cobra RX680. No exam, no fee, no antenna swap.
📻 Best CB Radios for Preppers 2026
License-free, 4W AM / 12W SSB — Cobra, Uniden, Galaxy, President covered with antenna picks.
📡 How to Find GMRS Repeaters
3 best directories to look up local repeaters, simplex vs repeater offsets, and how to request an access code.
📻 Baofeng UV-5R Deep-Dive
Programming, frequency coverage, Nagoya NA-771 antenna upgrade, and GMRS/FRS receive notes for the $30 prepper HT.
📣 Emergency Communication Protocols
Radio check-in schedules, MAYDAY calling, directed nets, and a tiered FRS → GMRS → HAM → satellite hierarchy.