Our county u
http://www.radioreference.com/apps/db/?sid=659 uses an ID structure. You can read the IDs from the numbers. I have programmed many fire IDs into a group and assigned alpha tags using this formula but you can easily follow the numbers.
Radio ID structure
Fire IDs: ( 7xxxyz )
xxx = Station number (ex. 192)
y = equipment type where:
1 = Engine
2 = Ladder
3 = Rescue
4 = Squad/ EMS Supervisor
5 = Medic
6 = Chief
7 = Tanker
8 = Bomb Squad
9 = Haz-Mat
0 = Other
z = radio type where:
0 = mobile
1 = 1st portable
2 = 2nd portable
3 = 3rd portable
4 = Base station or 4th portable
5 = Station Car
6 = Hose Wagon/Telesquirt
7 = Foam Truck
8 = Personnel Transporter
9 = Extra apparatus.
Example: 719250 is the mobile radio in Medic 192.
Example: 700812 is the 2nd portable on Engine 8.
Example: 701429 is Extra Ladder 14
Police IDs
Columbus Police officers are issued their own portable radios.
Portable IDs are 74xxxx where:
xxxx is the officer's badge number.
Badge numbers in the 5000 range are sergeants.
Mobile IDs are 75xxxy where:
xxx is the cruiser number.
y is the cruiser type
0 is a regular car
1 is a relief (spare) car
Example: 751760 is car 176
Example: 751701 is car R-170 (a relief car)
See if something like this will work for you.