Scanner Frequencies & Codes
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This file contains many of the radio codes & signals you hear used on the air. The information has been gleaned from many sources and since the only way to get this information is to listen and record what the radio codes and signals are encountered, there may be some differences in what is presented here from what you might believe the code or signals is used for. The data is arranged alphabetically by agency name. You can help in this effort. You can simply click on the link above to submit your information, or you can mail your information to us at: National Communications P.O. Box 291918 Kettering, OH 45429 This information is presented as a research tool courtesy of National Communications Magazine. Remember the site is free for you to use, but then there is really nothing that is free of charge. The magazine supports the web site, so please consider supporting the magazine with a subscription. 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You can look up frequencies by city/state You can look up frequencies by frequency/state You can print up the list of frequencies You can email a search to yourself to use in Excel or Scancat============================================================================= ANN ARUNDEL COUNTY POLICE DEPARTMENT: 10-0 Caution 10-50 Accident (F,PI,PD) 10-1 Unable Copy-Change Location 10-51 Wrecker Needed 10-2 Signal Good 10-52 Ambulance Needed 10-3 Stop Transmitting 10-53 Road Blocked At ____ 10-4 Acknowledgment (ok) 10-54 Livestock On Highway 10-5 Relay 10-55 Intoxicated Driver 10-6 Busy--Unless Urgent 10-56 Intoxicated Pedestrian 10-7 Out Of Service 10-57 Hit & Run (F,PI,PD) 10-8 In Service 10-58 Direct Traffic 10-9 Repeat 10-59 Convoy Or Escort 10-10 Fight In Progress 10-60 Squad In Vicinity 10-11 Dog Case 10-61 Personnel In Area 10-12 Stand By (stop) 10-62 Reply To Message 10-13 Weather--Road Report 10-63 Prepare Make Written Copy 10-14 Prowler Report 10-64 Message For Local Delivery 10-15 Civil Disturbance 10-65 Not Message Assignment 10-16 Domestic Problem 10-66 Message Cancellation 10-17 Meet Complainant 10-67 Clear For Net Message 10-18 Quickly 10-68 Dispatch Information 10-19 Return To _____ 10-69 Message Received 10-20 Location 10-70 Fire Alarm 10-21 Call _____ By Telephone 10-71 Advise Nature Of Fire 10-22 Disregard 10-72 Report Progress Of Fire 10-23 Arrived At Scene 10-73 Smoke Report 10-24 Assignment Completed 10-74 Negative 10-25 Report In Person (meet) 10-75 In Contact With______ 10-26 Detaining Subject, Expedite 10-76 En Route 10-27 Drivers license Information 10-77 ETA (estimated time arrival) 10-28 Vehicle Registration Info. 10-78 Need Assistance 10-29 Check For Wanted 10-79 Notify Coroner 10-30 Unnecessary Use Of Radio 10-80 Chase In Progress 10-31 Crime In Progress 10-81 Breatherlizer Report 10-32 Man With Gun 10-82 Reserve Lodging 10-33 EMERGENCY 10-83 Work School Xing At ____ 10-34 Riot 10-84 If Meeting __- Advise E 10-35 Major Crime Alert 10-85 Delayed Due To _____ 10-36 Correct Time 10-86 Officer/Operator On Duty 10-37 Investigate Suspicious Car 10-87 Pickup/Distribute Checks 10-38 Stopping Suspicious Car 10-88 Present Telephone # Of 10-39 Urgent---Use Lights/Siren 10-89 Bomb Threat 10-40 Silent Run---No Lights/Siren 10-90 Bank Alarm At _____ 10-41 Beginning Tour Of Duty 10-91 Pick Up Prisoner/Subject 10-42 Ending Tour Of Duty 10-92 Inproperly Parked Vehicle 10-43 Information 10-93 Blockade 10-44 Permission To Leave 10-94 Drag Racing 10-45 Animal Carcass At ____ 10-95 Prisoner/Subject In Custody 10-46 Assist Motorist 10-96 Mental Subject 10-47 Emergency Road Repair At__ 10-97 Check (test) Signal 10-48 Traffic Standard Repair 10-98 Prison/Jail Break 10-49 Traffic Light Out At__ 10-99 Wanted/Stolen Indicated ============================================================================= BALTIMORE COUNTY POLICE CODES & SIGNALS: KGA Replaces Headquarters Or Radio 10-1 Signal Poor 10-2 Signals Good 10-3 Stop-Transmitting, Radio Silence 10-4 Acknowledgement 10-5 Relay 10-6 Stand-By, Busy, Unless Urgent 10-7 Out Of Service-Give 10-20 10-8 In Service 10-9 Repeat Signal 13 ---OFFICER NEEDS ASSISTANCE--- Preceded By Hi-Low Warble Tones 10-17 Meet Complainant 10-18 As Soon As Possible 10-19 Return To Precinct 10-20 Location 10-21 Call ____ 10-22 Disregard 10-23 Arrived At Scene 10-25 Meet at ________ 10-27 Driver's License Information 10-28 Vehicle Registration Information 10-29 Check Records For Wanted 10-31 Crime In Progress 10-43 Investigation, Additional Information 10-44 Personal 10-50 Accident 10-50PD Accident, Property Damage Only 10-50PI Accident, Personal Injury 10-51 Request Tow Truck 10-55 Drunk Driver, DWI Complaint 10-57 Hit & Run 10-63 Get Ready to Copy 10-68 Ready to Copy 10-69 Message Received 10-78 Request Back-up 10-80 Motor Vehicle Pursuit 10-81 Breathalyzer Test 10-95 In Custody 10-99 Wanted, Typically used in response to a 10-29 check ============================================================================= BALTIMORE COUNTY POLICE "SITUATION FOUND" CODES: Investigative: A1 Accidental Death A25 Loitering Complaint A2 Alarm, Accidental A26 Malicious Burning A3 Alarm, Weather Malfunction A27 Mental Subject A4 Alarm, Faulty A28 Emergency Commitment A5 Alarm, Misuse A29 Narcotics A6 Anonymous Calls, Telephone A30 Neighbor Complaint A7 Arson A31 Open Door Or Window A8 Bomb Threat A32 Possession Of A Deadly Weapon A9 Bombing A33 Road Defects/Hazardous A11 Destruction Of Property A34 Sudden Death A12 Disturbance A35 Suicide A13 Escapes & AWOLS A36 Suicide, Attempt A14 Fires, Suspicious A37 Suspicious Suspect A15 Fires, Other A38 Tampering With Food A16 Gambling & Booking A39 Trespassing A17 Gambling Numbers & Lotto A40 Unknown Trouble A18 Gambling Other A41 Field Interview A19 Prostitution A42 Expired Patient A20 Hunters A43 Toxic Waste Spilt A21 Discharging Firearms A44 Overdose A23 Liquor Law Violation A45 Home Improvement Violation A24 Liquor, Open Container A49 Alarm, Civil Citation Domestic: B1 Abduction B8 Kidnapping B2 Child Abduction/Stealing B9 Minors In Possession B3 Child Abuse B10 Missing Adult B4 Child Neglect B11 Missing Child B5 Custody Despute B12 Missing Adult Returned B6 Domestic B13 Missing Child Returned B7 Juvenile Complaint B14 Domestic-Spousal Assault Accidents: C1 Auto Accident-Property Damage C10 Construction Accident C2 Auto Accident-Personal Injury C11 Farm Accident C3 Auto Accident-Fatal C12 Industrial Accident C4 Auto Accident-Departmental C13 Residential Accident C5 Auto Accident-Departmental P.I C14 Rescues, All Types C6 Auto Accident-Departmental Fatal C15 Accidental Stabbing/Shooting C7 Hit & Run Accident-Property C18 Train Derailment Or Accident C8 Hit & Run Accident-Personal C19 Subway Derailment Or Accident C9 Hit & Run Accident-Fatal Traffic: D1 Abandoned Vehicle D8 Traffic Complaint-D.W.I D2 Parking Complaint D9 Vehicle Pursuit D3 Suspicious Vehicle D10 Boating Complaint D4 Stored Vehicle D11 Boating Accident D5 Tampering W/Motor Vehicle D12 Vessels In Distress, Including D6 Traffic Arrest-D.W.I Grounding D7 Traffic Arrest-Other D13 Traffic Complaint-Other Assist: E1 Assist Motorist E5 Check On Location E2 Attempt To Locate E6 Slim-Jim Detail E3 Assistance Request E7 Civil Matter E4 Check On Subject Miscellaneous: F1 Burning Complaints F10 Health/Trash Complaint F3 Notify F11 Warrants/Summons Service F4 Customer Dispute F12 Non-Enumerated Complaint F5 Detention Of O.J. F13 Traffic Stops F6 False Report F14 All Animal Bite Case F7 Found Property F16 Duplicate Call F8 Lost/Stolen Property F17 County Code Violation-Other F9 Noise Complaint F18 Added Information Sexual Related: G1 Indecent Exposure G3 All Other Sex Offenses G2 Rape G4 Rape Attempt Theft: H1 Altered Money/Counterfeiting H11 Theft-Other H2 Burglary/B & E Attempt H12 Theft-From Motor Vehicle H3 Burglary/Breaking & Entering H13 Theft-Purse Snatching H4 Credit Card Misuse H14 Theft-Shoplifting H5 Bad Checks H15 Unauthorized Use H6 Failure To Return Rental Property H16 Theft-Boat H7 Failure To Pay H17 Theft-From Boat H8 Forgery H18 Recovered Motor Vehicles H9 Theft-Motor Vehicle H19 Recovered Bikes H10 Theft-Bike H20 Recovered Property Violence: J1 Robbery-Armed J5 Aggravated Assault J2 Robbery-Unarmed J6 Homicide J3 Robbery-Attempted J7 Simple Assault(not spousal) J4 Battery Racial Religous Ethnic (RRE): K1 Assault/Battery K5 Harassment K2 Cemetery Desecration K6 Telephone Misuse K3 Cross/Religous Symbol Burning K7 Non-Criminal Related Incident K4 Destruction Of Property K8 Other Criminal RRE Incidents Disposition Codes: 1 Report 7 No Report; Incident Unverified 2 Report: Unfounded 8 No Report; Incident Adjusted 3 Report: Handled By Other Agencies 9 No Accident Report; M.V.A. Forms 4 Report: Incident Unverified Issued Occurred On Public Propert 5 No Report; Unfounded 0 No Accident Report; M.V.A. Forms 6 No Report; Handled By Other Agencies Issued Other ============================================================================= BALTIMORE COUNTY FIRE CODES & SIGNALS: 1 Nothing Showing 5 Standard Operation (no lights/siren) 2 Smoke Showing 6 Pre Fire Plan 3 Working Fire 10 Civil Disturbance 4 Possible Additional 30 False Alarm Companies Needed ============================================================================= DEPARTMENT OF TRANSPORTATION CODES: 10-3 Emergency 10-63 Signal On Flash 10-10 Out Of Service 10-64 Accident With Signal 10-11 Officials Present 10-65 Repeat Message 10-27 Reply To Message 10-66 Request Police For Traffic 10-37 Name Of Operator 10-67 Signal Repaired 10-40 Available For Phone 10-68 No Trouble Found 10-58 Requesting Message 10-69 Name Of Complainant 10-59 Negative 10-78 Pothole In Road 10-60 Light Bulb Defective 10-79 Dead Animal In Roadway 10-61 Signal Damaged 10-88 Advise My Home Of ETA 10-62 Light Cycle Incorrect 10-89 --- Is Calling You ============================================================================= DEPARTMENT OF TRANSPORTATION SIGNALS: Signal 1 Call Office By Phone Signal 9 Auto Accident Signal 2 Call Office Immediately Signal 10 Accident With Injuries Signal 3 Report To Office Signal 14 Radar Set-Up ============================================================================= HOWARD COUNTY SHERIFF'S CODES: 1 Homicide 13 Stolen Property 2 Rape 14 Vandalism 3 Robbery 15 Weapons Violation 4 Assault 17 Sex Offenses 5 Breaking & Entering 18 Narcotics 6 Larceny 19 Gambling/Vice 7 Auto Theft 20 Domestic Trouble 9 Arson 21 Liquor Violations 10 Forgery 23 Intoxication 11 Fraud 24 Disorderly Conduct 12 Embezzlement 29 Runaway/Missing Person ============================================================================= MARYLAND - NATIONAL CAPITAL PARK POLICE - MONTGOMERY COUNTY DIVISION: 10-1 Receiving poorly 10-26 Report to your station 10-2 Receiving well 10-27 Advise phone number for________ 10-3 No transmitting except emerg. 10-28 Registration check (tag listing) 10-4 Message RX - 1 person unit 10-29 Check for wanted/stolen 10-5 On the scene 10-30 Does not conform to regulations 10-6 Busy (add activity code) 10-31 Do you have any calls for me 10-7 Out of service (add activity) 10-32 I have nothing for you 10-8 In service 10-40 Advise your welfare 10-9 Repeat last message 10-41 Welfare is OK 10-10 Out of service, available for 10-50 Officer in trouble call (add activity code) 10-51 Request assistance at (location) 10-12 Advise weather & road cond. no emergency 10-13 Request wrecker 10-60 Return on wanted/stolen check 10-15 Transporting prisoner in wanted on stolen indicated custody (add activity code) 10-61 Contagious disease exposure 10-16 request to meet ____ at____ caution code, precautions recom. 10-19 Request to meet shift 10-62 Is your radio air clear? commander at_______ 10-70 Units stay clear of (location) 10-20 What is your location? 10-86 Call_______ at_______ 10-21 Request field supervisor 10-88 Pick up/deliver package 10-22 Cancel or disregard last info 10-97 How is my reception? 10-23 Check for valid license 10-99 Message received - 2 person unit 10-24 Contact communications, your 10-100 Riot or large disturbance in convenience progress at (location) request assistance Signal 13 = Officer in trouble, need immediate help STATUS ACTIVITY CODES: 11 Traffic court - in county 12 Non-traffic court - in county 16 Park check at (location) *Indicate if directed patrol, permit, pond or trail check 19 Serving summons 21 Traffic warrant service 22 Assisting another unit 23 Traffic escort 24 Criminal warrant service/criminal arrest 25 Transport other county agency 26 Suspicious situation/vehicle/person 27 Investigation-preliminary or follow-up 28 IRT activity 29 K-9 activity 31 Transport 32 Out of county - investigation/bus/court 33 Vehicle maintenance/refueling 34 C.S.U. activity 38 Uniform OD job - start 39 Uniform OD job - stop 51 Detail (non-traffic) 52 Traffic (control detail, pre-arranged) 53 Trafic problem - on patrol 54 Traffic stop 55 Radar/traffic enforcement detail 56 Community policing/pop activity 62 Emergency petition service 91 Station activity 92 Eating 99 All other miscellaneous activity EVENT CLEARANCE CODES: Dash One Event verified/adjusted, no report. A brief descripton/remarks must be given. (This includes GOA if the complainant was contacted, verbal warnings, sent on way, etc.) Dash Two Event verified, report written, no arrest Dash Three Event verified, no report, arrest made or citation issued Dash Four Event verified, report written, arrest made Dash Five Event ont verified, no report Dash Six Event unfounded, no report Dash Seven Event turned over to other agency, no report ============================================================================= MARYLAND STATE POLICE RADIO CODES & SIGNALS: 10-0 Caution 10-52 Ambulance needed 10-1 Unable to copy - change loc. 10-53 Road blocked at ____ 10-3 Stop transmitting 10-54 Livestock on highway 10-4 Acknowledgement (OK) 10-55 Intoxicated driver 10-5 Relay 10-56 Intoxicated pedestrian 10-6 Busy, unless urgent 10-57 Hit & Run (F, PI, PD) 10-7 Out of service 10-58 Direct traffic 10-8 In service 10-59 Convoy or escort 10-9 Repeat 10-60 Squad in vicinity 10-10 Fight in progress 10-61 Personnel in area 10-11 Dog case 10-62 Reply to message 10-12 Stand-by (stop) 10-63 Prepare to make written copy 10-13 Weather -- road report 10-64 Message for local delivery 10-14 Prowler report 10-65 Net message assignment 10-15 Civil disturbance 10-66 Message cancellation 10-16 Domestic problem 10-67 Clear for net message 10-17 Meet complainant 10-68 Dispatch information 10-18 Quickly 10-69 Message received 10-19 Return to______ 10-70 Fire alarm 10-20 Location 10-71 Advise nature of fire 10-21 Call _____ by telephone 10-72 Report progress on fire 10-22 Disregard 10-73 Smoke report 10-23 Arrived at scene 10-74 Negative 10-24 Assignment completed 10-75 In contact with ______ 10-25 Report in person (meet) 10-76 Enroute 10-26 Detaining subject, expedite 10-77 ETA 10-27 Driver's license information 10-78 Need assistance 10-28 Vehicle registration info. 10-79 Notify coroner 10-29 Check for wanted 10-80 Chase in progress 10-30 Unnecessary use of radio 10-81 Breath test 10-31 Crime in progress 10-82 Reserve lodging 10-32 Man with gun 10-83 Work school crossing at _____ 10-33 EMERGENCY 10-84 If meeting _____ advise ETA 10-34 Riot 10-85 Delayed due to 10-35 Major crime alert 10-86 Officer/operator on duty 10-36 Correct time 10-87 Pick up/distribute checks 10-37 Investigate susp. vehicle 10-88 Present telephone # of ______ 10-38 Stopping suspicious vehicle 10-89 Bomb threat 10-39 Urgent - use light & siren 10-90 Bank alarm at _________ 10-40 Silent run - no light/siren 10-91 Pick up prisoner/subject 10-41 Beginning tour of duty 10-92 Improperly parked vehicle 10-42 Ending tour of duty 10-93 Blockade 10-43 Information 10-94 Drag racing 10-44 Permission to leave ___ for 10-95 Prisoner/subject in custody 10-45 Animal carcass at 10-96 Mental subject 10-46 Assist motorist 10-97 Check (test) signal 10-47 Emergency road repair at ____ 10-98 Prison/jail break 10-48 Traffic standard repair at 10-99 Wanted/stolen indicated 10-49 Traffic light out at ______ 10-50 Accident (F, PI, PD) 10-51 Wrecker needed ============================================================================= MONTGOMERY COUNTY POLICE: 10-1 Receiving Poorly 10-2 Receiving Well 10-3 No Transmitting Except Emergencies 10-4 Acknowledgement (message received) Two Man Unit 10-5 On The Scene 10-6 Busy 10-7 Out Of Service At (location) Code_____ 10-8 In Service 10-9 Repeat Last Message 10-10 Out Of Service, But Available For Call At (location) 10-11 You Are Dispatching Too Rapidly 10-12 Advise Weather & Road Conditions 10-13 Request Wrecker For Passenger Vehicle At (location) 10-15 Transportation Prisoner In Custody Code______ 10-16 Wish Too meal Unit______ Of (location) 10-19 Request Shift Commander At (location) 10-20 What Is Your Location 10-21 Request Field Supervisor At (location) 10-22 Cancel Or Disregard Last Message 10-23 Check For Valid License 10-24 Contact Your Desk Clerk, Your Convenience 10-25 Do You Have Contact With______ 10-26 Report To Your Station 10-27 Advise A Phone Number Of______ 10-28 Registration Check (listing) 10-29 Check For Wanted/Stolen 10-30 Does Not Confirm To Regulations 10-31 Do You Have Any Calls For Me? 10-32 I Have Nothing For You 10-50 Officer In Trouble, Needs Immediate Help 10-51 Request Assistance At (location) (no emergency) 10-60 Return On Wanted/Stolen Check. Wanted/Stolen In Indicated 10-70 Units Stay Clear Of (location) Survellance Underway 10-97 How Is My Reception 10-99 Message Acknowledged, One man Unit 10-100 Riot Or Large Disturbance In Progress At (location) Request Assistance ============================================================================= PRINCE GEORGES COUNTY POLICE DEPARTMENT RADIO CODES & SIGNALS 10-1 Receiving poorly 10-21 Do you have any calls for me? 10-2 Receiving well 10-22 Cancel last message 10-3 Stop transmitting 10-25 Do you have contact with ______ 10-4 Acknowledgement 10-27 Any reply to our message? 10-5 Relay to_______ 10-28 Check registration 10-6 Busy 10-29 Check for wanted or stolen 10-7 Out of service 10-30 Does not conform to regulations 10-8 In service 10-32 Last assignment complete 10-9 Repeat 10-33 Important business at station 10-10 Out of service, available 10-34 Clear for local broadcast 10-11 Transmitting too fast 10-36 Call landline 10-13 Advise weather conditions 10-37 Dispatcher on duty 10-14 Convoy or escort 10-40 Advise landline number 10-14A Army 10-41 No calls for you at this time 10-14B Bank or money 10-42 Check for driver's license 10-14E Explosives 10-62 Unable to copy 10-14F Funeral 10-64 Network free to copy lookout 10-14L Alcohol beverage 10-70 Statewide broadcast 10-14M Marines 10-85 ____left station at _____ 10-14N Navy 10-86 Call home 10-14W Wide load 10-89 _____is calling your station 10-15 Have prisoner in custody 10-94 Test, no voice, transmitter only 10-20 What is your location? 10-97 How do you copy? SIGNAL CODES: 1 Contact your station landline 44 Bomb threat 2 Contact station, urgent 45 Cave-in 3 Report to your station 46 Motorcycle complaint 3I Report to station, urgent 50 Cross burning 4 Meet complainant for report 60 Assault report 5 Investigate vehicle 61 Burglary report 6 Investigate vehicle occupants 62 House breaking 6I Investigate drunk driver 63 Larceny report 7 Investigate suspicious person 64 Murder 7A Investigate suspicious (caution) 65 Sex 8 Registration information 66 Suicide or attempt 9 Accident 67 Drowning 9I Accident with injuries 68 Disorderly subject 9F Accident with death 70 Drunk 11 Hit & run 71 Family trouble 11I Hit & run with injuries 72 Juvenile report 11F Hit & run with death 73 Disorderly juveniles 12 Jail break at ______ 74 Unlawful assembly of juveniles 13 Officer in trouble, EMERGENCY 75 Request camera 13I Trouble at station, EMERGENCY 76 Assist fire department 14 Investigate felony 76C Assist fire dept. (crowd control) 14F Investigate felony warrants 76T Assist fire dept. (Traffic) 14X Investigate felony will extradite 78 Burglar alarm 15 Unlawful assembly 79 Open building 15F Fight 81 Death report 15R Riot 82 Meet officer at _________ 20 Ambulance call, routine 83 Notification at _________ 20E Ambulance call, escort 84 Hold up 20I Ambulance call, EMERGENCY 86 Break-in at__________ 22 Unknown trouble in building 87 School or church crossing 25 Animal complaint 88 Stop for mail at __________ 25B Animal bite 89 Pick up recovered property 25F Animal dead 90 Minor repairs at _________ 26 Bad weather, no accident reports 91 Out for gas 30 Summons in lieu of arrest 98 Eating out of area 40 Tack ups (Sheriff only) 99 Out of service for meal 100 Car control transmitter 500 Lock out to follow =============================================================================