Cheshire Fire Department Radio Signals And Codes
Signals
1 -  Where is? (person or equipment) 53 - On the air (responding)
6 - Arrived at scene 54 - Under control
7 - Proceed with caution 55 - Send police
8 - Proceed with traffic 61 - Apparatus accident
10 - Telephone (Notify) 70 - Requesting instructions
12 - Apparatus needs fuel 71 - Returning in service
14 - Arrange for coffee 72 - Returning out of service
16 - Reduce radio chatter 79 - Location
23 - Rescue emergency 85 - Radio test
25 - Report to fire house for assignment (standby) 90 - Dismiss
44 - Hazardous materials incident 96 - Driver
50 - General Alarm 99 - Message Received
51 - Return to station 100 - Fierfighter needs assistance
52 - Off the air 555 - Evacuate building & 
3 blasts on the air horn
Codes
1 - No visible evidence of fire
2 - Small amount of smoke and/or flame showing
3 - Heavy amount of smoke and/or flame showing