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| Hamden Fire Department
Radio Codes
1963-1981
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10-1 - On the air
10-2 - Off the air
10-3 - Stand by
10-4 - Message acknowledged
10-5 - Repeat your message
10-6 - Arrived / Investigating
10-7 - Minor fire
10-8 - Working fire
10-9 - False Alarm
10-13 - Going to the Shop
10-14 - Returning to quarters
10-20 - What is your location?
10-28 - Call by phone
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On November 19, 1981, in conjunction with the advent of 9-1-1 service in Hamden, the 10-Code radio signals were expanded to include a few more messages:
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Hamden Fire Department
Radio Codes
1981-1984
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10-1 - On the air
10-2 - Off the air
10-3 - Stand by
10-4 - Message acknowledged
10-5 - Repeat your mnessage
10-6 - Arrived
10-7 - Minor fire
10-8 - Working fire
10-9 - False Alarm
10-12 - Proceed with caution
10-13 - Going to the Shop
10-14 - Returning to quarters
10-20 - What is your location?
10-21 - Box assignment
10-22 - 2nd Alarm
10-23 - 3rd Alarm
10-26 - Request ambulance
10-28 - Call by phone
10-29 - Request police
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With lots of input from all line personnel, the 10-Codes were replaced on July 12, 1984 with new radio codes that mirrored many of those had been used for years by the NHFD.
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Revisions
"Signal 1" was added with the introduction of the Incident Command System later in 1984, as was "Signal 36."
"Signal 81," added in February 1986, was thought to be preferable at incidents of a suspicious nature where the property owner or occupant, hearing the request in "plain English," might attempt to tamper with evidence.
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