A fire tone out is a series of audible tones broadcast over a dispatch frequency which alert specific resources that they have an assignment. These tones can activate fire station alarms, pagers, crew bus signal bells, and other devices which all serve to get the attention of the appropriate personnel. The term tone out can also refer to the portion of a dispatch broadcast which includes these tones.
Many radios include a monitoring feature which helps to prevent having to listen to the constant stream of traffic on many dispatch frequencies. When this feature is engaged, none of the radio transmissions are audible until after a specific set of tones are broadcast. In this way, firefighters in relatively slow stations can sleep during the night without having to listen to the radio. The radio is muted until they are dispatched. Then, the tones for their station or apparatus are broadcast and activates their radio, pagers, station alarm, etc.
There are many different types of tone outs. Some are several seconds long and have two tones. Some are less than a second have 4 or 5 tones and sound like pressing speed dial on a touch tone phone.
If you have a scanner or radio with the monitoring feature, you can probably mute out all the routine radio traffic. To do this, you would need to program in the tones for the station or apparatus which you are interested in. That way, your radio only turns on when that station or apparatus is being toned out.
Things to note: sometimes the tones are assigned to a station, not an apparatus. If the people or equipment you are interested in are bumped up to another station for a cover assignment, they would be toned out with that new station's tones. Conversely, if you are only interested in a particular station, and the tones are assigned to different apparatuses, then would have to reprogram your radio whenever a cover crew was in the station.
The agency I previously worked for had a dispatch system which would automatically sound a group quick call tone, activating every station in the county, whenever more than 3 stations were selected to respond. Thus our station's alarm was often activated even when we had no assignment.
I hope this has been helpful. Good luck.
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