Last updated on July 4th, 2026 at 01:14 pm
Walkie talkie lingo is the shorthand communication system used on two-way radios. The core terms: Over means you’re done talking, waiting for reply. Out means conversation finished. Roger means message received. 10-4 means acknowledged. Say again replaces “what?” Never say “over and out” — those two words contradict each other.
You’re standing on a job site, the radio crackles, someone says “10-4, what’s your 20?” and you have no idea what just happened. Or you key up and say “over and out” and someone on the other end laughs. These walkie talkie phrases, codes, and radio slang terms aren’t complicated — but nobody teaches them to you when you hand someone a radio for the first time.
This guide covers all of it: core walkie talkie lingo, the full 10-code system, NATO phonetic alphabet, CB radio slang, and the specific walkie talkie language patterns used across construction, security, trucking, and emergency services. Whether you just bought your first walkie talkie or you’re refreshing before a new job, keep this open.
Walkie Talkie Codes for Beginners — 6 You Actually Need
New to radios? Skip the full code list for now. These six phrases cover 90% of real-world radio use on any job site, event, or outdoor trip. Learn these first, add the rest as your work requires.
| Phrase | Meaning | Example |
|---|---|---|
| Over | Done talking, waiting for reply | “Gate 2, this is Gate 1, all clear. Over.” |
| Out | Conversation finished | “Copy that, heading in. Out.” |
| Roger / Copy | Got it, understood | “Roger.” or “Copy that.” |
| Say again | Please repeat (never say “what”) | “Say again, you broke up. Over.” |
| Radio check | Can you hear me? | “Radio check, how do you read? Over.” |
| Stand by | Wait a moment | “Stand by, I’ll check on that. Over.” |
That’s the beginner walkie talkie lingo starter pack. Once these are automatic, the rest of the system clicks into place fast.
Core Walkie Talkie Lingo — The Terms That Actually Matter
Most people learn “Over” and “Roger” and stop there. But there are about a dozen walkie talkie terms you’ll hear constantly on any radio channel. Know these and you’ll follow any radio conversation without asking anyone to repeat themselves.
| Term | What It Means | When You Use It |
|---|---|---|
| Over | I’m done talking, your turn | End of every transmission when you expect a reply |
| Out | Conversation is finished | Final transmission only — no reply expected |
| Roger | Message received and understood | Confirming you got the last transmission |
| Copy | Message received | Same as Roger — more common in civilian use |
| Wilco | Will comply | You received the instruction and you’ll do it |
| Go ahead | Proceed with your message | Response to someone trying to break into a channel |
| Say again | Please repeat | Never say “What?” or “Repeat” on military/emergency channels |
| Negative | No | Cleaner than “no” which sounds like “know” under noise |
| Affirmative | Yes | Cleaner than “yes” which can sound like “S” on bad signal |
| Stand by | Wait, I’ll be with you shortly | When you need a moment before responding |
| Come in | I’m calling you, please respond | Initiating contact with a specific person |
| Break | Interrupting to signal urgent message | When you need to cut into an ongoing conversation |
| Radio check | Can you hear me? How’s my signal? | Testing comms before starting a shift or operation |
These walkie talkie phrases and terms are the same whether you’re using a consumer FRS radio or a commercial unit. The language is standardized. One thing that trips people up: “over and out” is wrong. “Over” means you’re waiting for a reply. “Out” means you’re done. You can’t wait for a reply and be done at the same time. Pick one.
Walkie Talkie Codes — The 10-Code System Explained
10-codes were created by APCO — the Association of Public-Safety Communications Officials — in 1937. Police dispatchers needed a way to compress long instructions into short, clear codes. A message like “proceed to location and report status” became “10-21, 10-20?” That compression matters when your radio keeps cutting out.
CB radio truckers adopted the same system in the 1970s, which is why you hear “10-4” and “what’s your 20” outside law enforcement. Some codes stayed consistent nationally. Others shifted meaning between departments — always confirm local codes before working with a new agency or team.
| Code | Meaning | Common Use |
|---|---|---|
| 10-1 | Poor signal / receiving poorly | Signal issues on the channel |
| 10-2 | Signal good | Confirming clear comms |
| 10-4 | Acknowledged / OK | Most recognized code in US culture |
| 10-7 | Out of service | Signing off for break or end of shift |
| 10-8 | In service / back on air | Returning from break |
| 10-9 | Repeat message | Missed the last transmission |
| 10-10 | Off duty / standing by | Available but not actively working |
| 10-20 | Location | “What’s your 10-20?” = where are you? |
| 10-21 | Call by phone | Switch to phone, off radio |
| 10-22 | Disregard | Ignore the last message |
| 10-23 | Arrived at scene | On location |
| 10-33 | Emergency / help needed | Priority code, clears the channel |
| 10-36 | Correct time | Time check |
| 10-42 | Officer off duty (end of watch) | Law enforcement sign-off |
| 10-99 | Mission completed | Task done, returning to base |
Not all agencies use 10-codes anymore. After 9/11, the Department of Homeland Security pushed for plain language in emergency communications because mismatched codes caused confusion between agencies. Many police departments now use plain speech. But truckers and CB users still run the original APCO system, and most security teams use a version of it.
The NATO Phonetic Alphabet — Every Letter, No Guessing
Ever tried spelling a name over a crackling radio? “S” sounds like “F.” “B” sounds like “D.” “M” and “N” are almost identical. The NATO phonetic alphabet solves this by assigning a unique word to every letter — words chosen specifically because they sound nothing like each other under noise and compression.
Used by military, aviation, law enforcement, and anyone working in professional radio communication. If you’re working a job site or security detail, knowing this cold makes you look like a professional immediately.
| Letter | NATO Word | Letter | NATO Word |
|---|---|---|---|
| A | Alpha | N | November |
| B | Bravo | O | Oscar |
| C | Charlie | P | Papa |
| D | Delta | Q | Quebec |
| E | Echo | R | Romeo |
| F | Foxtrot | S | Sierra |
| G | Golf | T | Tango |
| H | Hotel | U | Uniform |
| I | India | V | Victor |
| J | Juliet | W | Whiskey |
| K | Kilo | X | X-ray |
| L | Lima | Y | Yankee |
| M | Mike | Z | Zulu |
How to Use It
Spell out what you need to communicate letter by letter. If you’re confirming a license plate “BFD-142,” you say “Bravo Foxtrot Delta, one four two.” No ambiguity, even on a noisy channel.
Numbers work differently — you don’t use NATO words for digits. You just say each digit clearly: “one,” “two,” “three.” Some teams say “niner” for nine to avoid confusion with the German word “nein.” That one’s optional in civilian use but standard in aviation.
CB Radio Lingo — Trucker-Specific Terms
CB radio developed its own layer of walkie talkie slang on top of the standard 10-codes. Truckers working Channel 19 through the 1970s built a whole vocabulary — some of it survives on the road today. This isn’t formal radio protocol, it’s culture.
Why CB lingo sounds different: CB truckers weren’t police dispatchers. They weren’t trained in formal radio protocol. They took the 10-code system, stripped out what they didn’t need, and added their own shorthand for road-specific situations. The result is a hybrid that’s half technical, half creative.
| CB Term | Meaning |
|---|---|
| Breaker breaker | Requesting to break into a conversation on the channel |
| What’s your 20? | Where are you? (from 10-20 = location) |
| Smokey / Bear | Police officer (highway patrol specifically) |
| Bear trap | Speed trap / radar location |
| Hammer down | Going fast, stepping on the gas |
| Chicken coop | Weigh station |
| Parking lot | Traffic jam |
| Go-go juice | Diesel fuel |
| Good buddy | Fellow CB radio user (fell out of fashion, now ironic) |
| Evel Knievel | Motorcycle officer |
For a deeper breakdown of the full CB code system, see the what’s your 20 guide.
Funny Walkie Talkie Lingo — What Movies Get Wrong
Pop culture has been teaching walkie talkie lingo incorrectly for decades. Here’s what you hear in movies vs what actually happens on a working radio channel.
| What Movies Say | The Problem | What You Should Say |
|---|---|---|
| “Over and out” | Contradicts itself. “Over” = waiting for reply. “Out” = done. Can’t be both. | “Out” if you’re done. “Over” if you want a reply. |
| “Come in, do you copy?” | Redundant. “Come in” and “do you copy” ask the same thing twice. | “[Name], this is [Name]. Over.” |
| “Do you read me?” (repeated 3x) | Nobody repeats this three times. One transmission, then wait. | “Radio check. Over.” |
| “Good buddy” | Dated CB slang from the 1970s. Sounds ironic on a professional channel. | Use the person’s name or unit ID. |
The “over and out” mistake is the most universal. If you say it on a real job site with experienced radio operators, someone will correct you by the end of the first shift. It’s become the quickest way to identify someone who’s never worked with two-way radios professionally.
Words You Should Never Say on a Radio
Some words on a radio channel create legal and operational problems. This isn’t about politeness — it’s about not accidentally triggering emergency protocols or getting yourself flagged.
Never say “Mayday” unless it’s a real emergency
Mayday is an international distress call derived from the French “m’aidez” (help me). On aviation and maritime channels, a false Mayday clears all traffic, triggers emergency response, and can result in serious legal consequences. On walkie-talkies and CB, it’s less formal, but still — don’t use it as a joke.
Never say “Repeat” in military or emergency contexts
In artillery and military communications, “Repeat” means fire again. If you’re working alongside military units or at events with mixed teams, “Say again” is the safe phrase for “I didn’t catch that.” This matters more in some contexts than others, but it’s a habit worth building.
Avoid channel 9 on CB unless it’s an emergency
Channel 9 is the designated CB emergency channel monitored by REACT in many areas. Casual conversation on channel 9 blocks emergency communications. Use channel 19 for general trucker traffic. The FRS/GMRS guide covers which channels are reserved for what.
Basic Radio Etiquette — How to Sound Like You Know What You’re Doing
Knowing the lingo is half of it. Using it correctly is the other half. These are the practical rules that separate someone who sounds professional from someone who clogs up the channel.
Listen before you transmit
Always listen for a few seconds before keying up. If someone’s already talking, wait. Cutting into a transmission means neither message gets through cleanly.
Keep it short
Identify yourself, say what you need, end with “Over” or “Out.” That’s it. Nobody wants to hear a 90-second transmission with pauses and filler words. Short transmissions keep the channel clear for everyone.
Identify yourself first
Start every transmission with your unit name or call sign, then the person you’re calling. “Security 3, this is Gate 1, Over.” Not “Hey, can you hear me?” The person you’re calling needs to know immediately whether this is for them. For deeper coverage on professional radio etiquette including call sign formats and priority traffic, there’s a full guide.
Don’t hold the PTT longer than you need to
PTT is Push-To-Talk — the button on the side of your radio. Press and wait half a second, then speak. Release after your last word. If you want hands-free operation, the VOX feature on most modern radios handles this automatically.
If you want push-to-talk without a dedicated radio, the Apple Watch Walkie-Talkie app handles it over WiFi or cellular. For smartphone PTT options, the walkie talkie app guide covers the top picks on Android and iOS.
Frequently Asked Questions
What does “Over” mean on a walkie talkie?
“Over” means you’ve finished your transmission and you’re waiting for the other person to respond. It signals the channel is open for a reply. Always end transmissions with “Over” when you expect an answer, and “Out” when the conversation is finished and no reply is needed.
What’s the difference between Roger and Copy?
Both mean “message received,” but they come from different traditions. Roger is the NATO phonetic word for the letter R, which historically meant “Received.” Copy is more common in civilian and CB radio use today. Either works — they mean the same thing in practice.
What does 10-4 mean on a walkie talkie?
10-4 means acknowledged or “OK” — message received and understood. It’s the most recognized radio code in American culture. It comes from the APCO 10-code system created in 1937 for police dispatchers, then adopted by CB truckers in the 1970s, and from there into everyday speech.
What is walkie talkie lingo called?
It’s called radio lingo, radio codes, or two-way radio communication protocol depending on context. The formal system is the APCO 10-code system. The NATO phonetic alphabet is a separate layer used for spelling. CB radio has its own informal slang layer on top of both.
Why do you say “Say again” instead of “Repeat”?
In military communications, “Repeat” is an artillery command meaning fire again. Saying it over a radio in a mixed environment can cause confusion or worse. “Say again” unambiguously means “please repeat your last transmission” with no secondary meaning. It’s the safe default in any professional radio context.
What walkie talkie channel do truckers use?
Truckers use Channel 19 on CB radio for highway communication — road conditions, speed traps, accidents, and general traffic. Channel 9 is the emergency channel and should not be used for general conversation. The communication runs on the APCO 10-code system, with “what’s your 20” (location) and “10-4” (acknowledged) being the most common exchanges.
Do I need to learn all walkie talkie codes before using a radio?
No. For casual use, you need about six terms: Over, Out, Roger, Say again, Go ahead, and Radio check. The full 10-code system and NATO alphabet matter for job sites, security work, events coordination, and CB radio. Learn the basics first, add the rest as your context requires.
What is funny walkie talkie lingo?
The most famous examples come from CB trucker culture: “Smokey” for police, “hammer down” for speeding, “chicken coop” for a weigh station, and “what’s your 20?” for location. Movies added their own layer with “over and out” — which sounds authoritative but is technically wrong. Real radio operators say either “Over” or “Out,” never both together.