Where did the term 10/4 come from?

Question

Like when people say 10/4 on the two way when something is understood

Answer 1

It was from a CB code as follows:

10-0 Use Caution
10-1 You are being received Poorly
10-2 You are being received Clearly
10-3 Stop Transmitting
10-4 O.K.
10-5 Relay Message
10-6 Busy with Call
10-7 Out of service, (completely)
10-7b Out of service (personal)
10-7c Out of service (court)
10-7od Out of service (off duty)
10-8 In service
10-8ot In service (over time)
10-9 Repeat last message
10-10 Out of service, Radio on
10-11 Give F.C.C. Call Sign/Dispatching too fast
10-12 Visitors or officials present
10-13 Advise weather and road conditions
10-14 Convoy or escort detail
10-15 Prisoner in custody
10-15m Prisoner in custody (mental case)
10-16 Pick up prisoner
10-17 Pick up papers
10-18 Complete present assignment ASAP/Get there ASAP
10-19 Return to office
10-20 Your location
10-21 Call by telephone
10-21A Phone home, my ETA is _____
10-21B Call your home
10-22 Cancel last message/Take no further action
10-23 Stand by until channel clears
10-24 Emergency at station/all units return
10-25 Do you have contact with ___________
10-26 Driver's license check by number or name
10-27 Check for wants or warrants
10-28 Check registration on vehicle
10-29 Check for stolen for
10-29A Check wants, subject (PIN)
10-29R Check wants and record, subject (PIN, CJIC)
10-29C Check complete, subject (NCIC)
10-30 Does not conform to rules or regulations
10-31 Is lie detector available?
10-32 Man with gun.
10-33 Emergency traffic/don't transmit unless necessary
10-33 Alarm (type: Audible, silent)
10-34 Clear for local dispatch or open door
10-35 Confidential information or open window
10-36 Correct time
10-37 Give me name of Operator on duty
10-38 Your destination
10-39 Your message is delivered/Requested unit in route
10-40 Advise if officer _______ available for phone call
10-41 Call the station on alternate frequency
10-42 Officer ..... now at his home
10-43 Have _________ call his/her residence
10-44 Station _________ is calling your residence
10-45 Give name of Officer in Charge or Injured person
10-46 Advise if ________ available at phone
10-47 Officer ______ is available at _________
10-48 Not available for assignment/out for coffee or whatever
10-49 Pick up passenger at ___________
10-50 No traffic for you/resume patrol
10-51 Message for delivery by telephone
10-52 Message for delivery in writing
10-53 Do you have traffic for this station?
10-54 Unit and officer have left the Parish
10-54d Possible dead body
10-55 Unit and officer have returned to Parish
10-55d Send coroner
10-56 Teletype busy
10-57 Teletype broken or Firearms discharged
10-58 Teletype in service
10-59 Tape for repeat message
10-60 What is next for message # _____
10-61 Stand by for teletype message
10-62 Unable to copy radio, use teletype or meet in person
10-63 Net in use, stand by, will advise when clear
10-64 Net clear, go ahead with traffic
10-65 Clear for assignment
10-66 Clear for cancellation
10-67 All stations retransmit following
10-68 Repeat dispatch
10-69 Have you dispatched _______?
10-70 Net message for all stations
10-71 Proceed with traffic
10-72 Stand by for Civil Defense Test
10-73 Stand by for Civil Defense Traffic
10-74 Civil Defense Clear
10-75 Severe weather statement
10-76 Give daily traffic
10-77 Give mileage your unit
10-78 Send ambulance
10-79 Send wrecker
10-80 Tower lights out/Explosion/Lightening
10-80a Assist radio dispatcher
10-81 Officer ______ will be at your station
10-82 Reserve room for officer
10-83 Have _______ call station by phone
10-84 Advise ____ officer will return this date
10-85 Officer _____ on special detail or Meet with agent
10-86 Advise phone number your location
10-87 Give call letters of your station
10-88 Advise phone number of officer
10-89 Request radio servicemen be sent
10-90 Request teletype servicemen
10-91 Prepare for inspection of ______ by ________
10-91B Noisy animal (Barking)
10-91D Dead animal
10-91H Stray Horse
10-92 Your quality is poor
10-93 Your quality is good
10-94 Call station by teletype
10-95 Advise telephone call this station
10-96 Give test count
10-97 Arrived at scene
10-98 Last detail completed
10-99 Unable to receive your message
10-100 Out using restroom
10-102 Cruelty to animals
10-103 Disturbance
10-103f Disturbance by fight
10-103m Disturbance by mental person
10-106 Obscenity
10-107 Suspicious person
10-108 Officer down or Officer needs assistance
10-112 Impersonating an officer
11-6 Illegal discharge of firearms
11-7 Prowler
11-8 Person down
11-10 Take a report
11-12 Dead animal
11-13 Injured animal
11-14 Animal bite
11-15 Ball game in street
11-17 Wires down
11-24 Abandoned Vehicle
11-25 Vehicle - Traffic hazard
11-25X Female motorist need assistance
11-26 Abandoned bicycle
11-27 Subject has felony record, but is not wanted
11-28 Rush vehicle registration information
11-29 Subject has no record
11-30 Incomplete telephone call
11-31 Person calling for help
11-40 Advise station if ambulance is needed
11-41 Request Ambulance
11-42 Ambulance not required
11-43 Doctor required
11-44 Coroner required
11-45 Attempted suicide
11-46 Death report
11-47 Injured Person
11-48 Provide Transportation
11-54 Suspicious vehicle
11-65 Traffic Signal light out
11-66 Traffic Signal Out-of-order
11-70 Fire Alarm
11-71 Fire Report
11-79 Traffic Accident - Ambulance dispatched
11-80 Traffic Accident - Serious Injury
11-81 Traffic Accident - Minor Injury
11-82 Traffic Accident - No Injury
11-83 Traffic Accident - No Details
11-84 Direct Traffic
11-85 Dispatched Tow Truck
11-86 Special Detail
11-87 Assist Other Unit
11-95 Out of vehicle, car stop (location/license)
11-96 Out of vehicle, car stop, send backup(location/license)
11-98 Meet Officer
11-99 Officer needs Help/Emergency

Answer 2

10/4 means received. It is just part of a code that was created to make things quicker on a CB for police, fire and rescue to use. For example, whats your 20 means what is your current location? True, it would be just as easy to say "Where are you", but doing it this way 100% get's the idea across that you'd like to know exactly where they are.

Answer 3

It became into invented back interior the '30s as area of an prolonged record of "10 codes" to characterize countless words. the guy who invented the record became into from the 10th district of the Illinois State Police. The "ten" alerted the listener that yet another extensive type became into coming, and to pay attention heavily. They had to shrink using police radio frequencies by potential of making use of codes rather of words and sentences.

Answer 4

It's a trucking code from CB radio. Here's a list of the rest:

Answer 5

the number system is supposed to be easier to understand on the radio. so certain numbers have been assigned certain meanings. personally, i prefer "roger" to "10-4"

Answer 6

It comes from the military.