| Signal | Description | In Use By (Department) |
| 1 | All Units Eliminate Unnecessary Transmissions | Nassau Standard |
| 2 | Un-Assigned — Reserved For Future Use | Nassau Standard |
| 3 | Unit Involved In Accident – Personnel Injured | Nassau Standard |
| 3 |
Invalid in the House | Massapequa |
| 4 | Unit Disabled – Need Assistance | Nassau Standard |
| 5 | Activate Traffic Signal – Open Doors | Nassau Standard |
| 6 | Stand By For Orders Where You Are | Nassau Standard |
| 7 | Release Men In Stations | Nassau Standard |
| 8 | Still Alarm – Grass, Oil Burner Or Car Fire | Nassau Standard |
| 8B |
Brush or Rubbish Fire |
Hicksville |
| 8C |
Car Fire |
Hicksville |
| 8H |
Oil Burner Fire (Heating) |
Hicksville |
| 9 | Emergency Or Rescue Call | Nassau Standard |
| 9A |
Ambulance Call |
Not on the Standard List |
| 9A |
Fireman’s Family |
Valley Stream |
| 10 | Working Building Fire Or Emergency Clear The Air | Nassau Standard |
| 11 | Call By Land Phone At Your Convenience | Nassau Standard |
| 12 | Fire Under Control – Resume Normal Radio Use | Nassau Standard |
| 12A |
Remove Scott Air Packs ?? |
Not on the Standard List |
| 12A |
Respond no lights or sirens |
Syosset |
| 13 | Return To Quarters — Or — Returning To Quarters | Nassau Standard |
| 14 | Call Police – Routine Traffic Control Or Reports | Nassau Standard |
| 14A | Call Police Ambulance | Nassau Standard |
| 14F |
Call Fire Department Ambulance |
Hicksville |
| 14M | Call Police – Mental Disabled | Nassau Standard |
| 14R | Call Police Rescue | Nassau Standard |
| 15 | Radio Check (5 X 5 Loud And Clear) (3 X 3 Weak And Unclear) | Nassau Standard |
| 16 | Call Doctor | Nassau Standard |
| 17 | Unit Not Available For Duty | Nassau Standard |
| 17D |
No Chauffers |
Hicksville |
| 17M |
No Manpower |
Hicksville |
| 18 | Unit Available For Duty | Nassau Standard |
| 18H | Unit is Secure In House | Hicksville |
| 19 | Unit Leaving District | Nassau Standard |
| 19D |
Chief Leaving District – For District Work |
Not on the Standard List |
| 19W |
Chief Leaving District – Leaving for Work |
Not on the Standard List |
| 20 | Unit Returning To District | Nassau Standard |
| 21 | Unit Responding To Scene | Nassau Standard |
| 21F |
First Fire Unit Responding (To Be used by Dispatcher) |
Hicksville |
| 22 | Unit Arrived At Scene | Nassau Standard |
| 22H |
Engine at Scene on Hydrant |
North Massapequa |
| 22H |
Ambulance Arrived at Hospital |
Not on Standard List |
| 23 | Message Received | Nassau Standard |
| 24 | Call Fire Marshal – Routine | Nassau Standard |
| 25 | Call Fire Marshal – Immediate Investigation | Nassau Standard |
| 25D | Call Fire Marshal – Immediate – Death At Scene | Nassau Standard |
| 25HM | Call Fire Marshal – Haz Mat Response Team | Nassau Standard |
| 26 | Call Health Department | Nassau Standard |
| 27 | Call Utility – E-Elec; G-Gas; H-Highway; R-Lirr; W-Water | Nassau Standard |
| 28 | Call For Refilling Air Bottles At Scene | Nassau Standard |
| 29 | Call Chaplain (C-Catholic; J-Jewish; P-Protestant) | Nassau Standard |
| 30 | Call For Refreshments At Scene | Nassau Standard |
| 31 | Fuel Needed At Scene — Or Stopping For Fuel | Nassau Standard |
| 32 | Sound General Alarm – Reinforce Initial Response | Nassau Standard |
| 32 |
Send Assistance / Mutual Aid |
Massapequa |
| 33 | Request Mutual Aid | Nassau Standard |
| 34 | Invalid In Building | Nassau Standard |
| 35 | Switch From Battalion Frequency To County-Wide (46.10) | Nassau Standard |
| 36 | Switch From County-Wide Frequency To Battalion Frequency | Nassau Standard |
| 36 |
Dispatcher working calls for both 630 and 660 |
Massapequa/N.Mass |
| 37 | Switch To Mobile-To- Mobile Frequency (Or Cb Sets, Walkie Talkie) | Nassau Standard |
| 38 | Training Or Drill | Nassau Standard |
| 39 | Verify Location Of Alarm | Nassau Standard |
| 40 | Give Your Location — Or Location Of Alarm | Nassau Standard |
| 41 | All Units At Scene Sound Horns – Firemen Leave Building | Nassau Standard |
| 42 | Mass Casualty Incident | Nassau Standard |
| 43-48 | Unassigned – Reserved For Future Use | Nassau Standard |
| 49 | Obvious D.O.A. – For Ems Units | Nassau Standard |
| 50 | Call Police – Dangerous Situation Or Civil Disturbance | Nassau Standard |
| 51-60 | Un-Assigned – Reserved For Future Use | Nassau Standard |
| 60 | Signal 10 but no chief on scene | Massapequa |
| 61-70 | Available For Any Use | Nassau Standard |
| 61 |
Co. Unable To Respond / No Response From Co. | Manhasset / Lakeville |
| 61 | Cardiac Related |
Oceanside / Rockville Centre / E. Rockaway |
| 61 |
Chief’s Call – Report to Respective Stations |
Hicksville |
| 61 |
Unit is responding to NUMC |
East Meadow |
| 62 |
Difficulty Breathing |
Oceanside |
| 62 |
All Available Police Unit Members Respond To The Scene | Manhasset / Lakeville |
| 62 |
Standby Needed at HQ |
Hicksville |
| 63 |
Fireman’s Familiy |
Oceanside / Massapequa |
| 63 |
Unit Out Of Service |
Manhasset / Lakeville |
| 63 | Hazardous Road Conditions |
Hicksville |
| 64 |
Social Activity |
Massapequa |
| 64 |
Unit Back in Service |
Manhasset / Lakeville |
| 64 |
Passing Apparatus |
Hicksville |
| 65 |
Hazmat Team Respond to Scene |
Hicksville |
| 66 |
Call came from FireCom |
Not on the Standard List |
| 66 |
Fireman’s Family |
North Massapequa |
| 66 |
AMT Responding |
Hicksville |
| 66 |
Automatic Alarm |
N. Bellmore / Bellmore / N. Merrick Merrick / Lakeview |
| 67 |
Gas Leak |
Not on the Standard List |
| 68 |
Fireman’s Family |
East Meadow / Levittown |
| 68 |
Switch to High Band Frequency |
Hicksville |
| 69 |
Bomb Scare |
Long Beach |
| 70 | Fireman’s Family | Hicksville / Lynbrook |
| 70 |
Automatic Alarm |
Lawrence / Cedarhurst / Woodmere |
| 70 |
Working Car Fire |
Uniondale |
| 70 |
Special Dept. Response Signal |
Hicksville |
| 71 |
Automatic Alarm |
Long Beach / Island Park |
| 71 | Company Meeting | Nassau Standard |
| 72 | Company Drill Or Training | Nassau Standard |
| 72B | Company Drill Or Training At The F.S.A. | Nassau Standard |
| 73 | Rescue Company Or Squad Meeting | Nassau Standard |
| 74 | Rescue Company Or Squad Training Or Drill | Nassau Standard |
| 74B | Rescue Company Or Squad Training Or Drill At The F.S.A. | Nassau Standard |
| 75 | Officers Meeting | Nassau Standard |
| 76 | Department Meeting | Nassau Standard |
| 77 | Department Drill Or Training | Nassau Standard |
| 77B | Department Drill Or Training At The F.S.A. | Nassau Standard |
| 78 | Funeral Or Memorial Service | Nassau Standard |
| 79 | Drill Team Meeting Or Practice | Nassau Standard |
| 80 | Parade | Nassau Standard |
| 80 |
No Chauffeur | Long Beach |
| 81 | Assistant Fire Inspectors Meeting | Nassau Standard |
| 81 |
Personnel Status 1 | Long Beach |
| 82 | Fund Drive | Nassau Standard |
| 82 |
Personal Status 2 |
Long Beach |
| 83 | Chauffeur Or M.P.O. Training | Nassau Standard |
| 83 |
Personal Status 3 |
Long Beach |
| 84 | Clean Up | Nassau Standard |
| 85 | Uniform Inspection Or Fitting | Nassau Standard |
| 86 | Blood Drive | Nassau Standard |
| 87 | Physical Exam | Nassau Standard |
| 88 | Softball Game Or Practice | Nassau Standard |
| 88 |
Chauffer and Officer only Responding |
N. Massapequa |
| 89 | Picnic Or Outing | Nassau Standard |
| 90 | Tour Of Firecom | Nassau Standard |
| 91 | Indefinite – Available For Any Usenassau | Nassau Standard |
| 91 |
Fireman Aided / Fireman’s Property | Roslyn |
| 91 |
Fireman’s Family |
Elmont / Island Park |
| 97 | Given by 1st Due Ladder/1st Due Rescue instead of 22 | Port Washington |
| 97 |
Manpower Needed |
Manhasset / Lakeville |
| 98 |
Given by 2nd Due Engine instead of 22 | Port Washington |
| 98 | Smoke Showing/Small Room Fire/First Due Key Hydrant | Not on the Standard List |
| 98 | Helicopter Landing | Island Park |
| 98 |
AMT/EMT Needed |
Manhasset / Lakeville |
| 99 | Investigation | Massapequa |
| 99 | Cardiac Arrest/CPR in Progress | Port Washington / Manhasset / Lakeville |
| 99 | Department Member’s House | Unknown Department |
| 99 | Water Rescue | Long Beach/Island Park |
| 100 | Extrication Call | Long Beach/Island Park |
| Resource: W2LIE.net | ||