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UER Forum > UE Encyclopedia > 10 Code (Radio) (Viewed 8878 times)
Entry: 10 Code (Radio)
originally posted by Mr. Stabby

[last edit 3/16/2007 8:21 PM by RailGuy88 - edited 7 times]

A 10 code is any one of the communication codes starting with 10, often used by both government and private institutions to provide a basic framework for communications in the facility. 10 codes are implemented by giving employees a Two-way Radio which they can use for communication between the control center and each other.

10 codes are not regulated and are often adapted by corporations to suit their needs and wants, however the most basic ones to tend to stay the same.

One of the main reasons a Urban Explorer would want to carry a list of 10 codes with them is to listen in to security, police, fire, EMS, maintenance, or general communication frequencies and gather information. A typical conversation may go as follows, with persons signified as letters:

A: 635 to 638.
B: 638, go ahead.
A: 10-34 south entrance ground, multiple 10-12.
B: Roger, 10-6.
B: 291, 10-200 south entrance ground level.
C: 638, 10-4, notifying.

To an unprepared listener this may sound like gibberish, but to someone armed with the knowledge of 10 codes this can provide a wealth of useful information. Let's see what it would look like if this was spoken in plain English:

A: 635 to 638.
B: 638, go ahead.
A: Trouble at south entrance ground level, help needed, multiple visitors.
B: Roger, please stand by.
B: 291, police needed at south entrance ground level.
C: 638, got that. Notifying cops.

In this situation the knowledge of the 10 codes may mean the difference between getting out of there and getting busted.

Here's a list of the most commonly used 10 codes. Please note that while these do vary company to company, a lot stay the same.

(EDIT 3/16/07): The above paragraph is NOT factually accurate. 10 codes vary widely from department to department, county to county, state to state. The below should NOT be used as a reference. Use the internet to search for the organization's 10 codes you are looking to decode.


10-1   Receiving Poorly                10-41  Please Tune To Channel
10-2 Receiving Well 10-42 Traffic Accident At___________
10-3 Stop Transmitting 10-43 Traffic Tieup At______________
10-4 OK, Message Received 10-44 I Have A Message For You
10-5 Relay Message 10-44 (Or__________________________)
10-6 Busy, Stand By 10-45 All Units Within Range Report
10-7 Out of Service, Leaving Air 10-50 Break Channel_________________
10-8 In Service, Subject To Call 10-60 What Is Next Message Number?
10-9 Repeat Message 10-62 Unable To Copy, Use Landline
10-10 Trnsmssn Cmpltd, Stndng By 10-63 Net Directed To_______________
10-11 Talking Too Rapidly 10-64 Net Clear
10-12 Visitors Present 10-65 Waitng for Nxt Msg or Assngmnt
10-13 Advise Wx and Road Conditions 10-67 All Units Comply
10-16 Make Pickup At_______________ 10-70 Fire At_______________________
10-17 Urgent Business 10-71 Prcd With Trnsmssn In Sequence
10-18 Anything For Us? 10-73 Speed Trap At_________________
10-19 Nothing For You, Rtrn To Base 10-75 You Are Causing Interference
10-20 My Location Is_______________ 10-77 Negative Contact
10-21 Call By Landline 10-81 Reserve Hotel Room For________
10-22 Report In Person To__________ 10-82 Reserve Room For______________
10-23 Stand By 10-84 My Telephone Number Is________
10-24 Completed Last Assignment 10-85 My Address Is_________________
10-25 Can You Contact______________ 10-89 Radio Repairman Needed At_____
10-26 Disregard Last Information 10-90 I Have TVI
10-27 I Am Moving To Channel_______ 10-91 Talk Closer To Mike
10-28 Identify Your Station 10-92 Your Tx Is Out Of Adjustment
10-29 Time Is Up For Contact 10-93 Chck My Frqncy On Ths Chnnl
10-30 Does Not Conform To FCC Rules 10-94 Please Give Me A Long Count
10-32 I Will Give You A Radio Check 10-95 Tnx Dead Carrier For 5 Seconds
10-33 EMRGNCY TRFFC AT THIS STATION 10-99 Mssn Cmpltd, All Units Secure
10-34 Trbl At Ths Sttn, Help Needed 10-100 5-Min. Brk, Commonly RestRoom
10-35 Confidential Information 10-200 Police Needed At______________
10-36 Correct Time Is______________
10-37 Wrecker Needed At____________
10-38 Ambulance Needed At__________
10-39 Your Message Delivered

10 codes list from http://archimedes....raiar/code-10.html.

To keep the thread short I'll only post the link. I've found that many jurisdictions use different 10 Codes. Those found at this link are more applicable to police use: http://www.phreak.org/radio/tencode.html

Addendum: Many departments and organizations throughout the United States and Canada are ELIMINATING the use of 10 codes entirely. This is because as radio systems focus on interoperability (the ability for two or more dissimilar radio systems to communicate), it is not efficient for organizations to use 10 codes any longer as each organization uses different 10 codes. 10 codes will likely become a thing of the past, sooner rather than later.
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UER Forum > UE Encyclopedia > 10 Code (Radio) (Viewed 8878 times)


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