Northeast Tarrant County Unit Numbering Scheme
From The RadioReference Wiki
NOTE: This system has been marked as deprecated in the RRDB.
Unit Numbering Scheme
As of 10/1/2010 the cities of Colleyville, Keller, and Southlake are sharing dispatch operations. For the police, it's handy to know the unit numbers.
3##s Keller, which also patrols Westlake
It sounds like the 2nd digit will be the shift for most of the patrol units.
18# Colleyville School Patrol
7## Southlake School Patrol
This is important to know now, because they are all on PATRL1.
C-PATRL1, S-PATRL1, and K-PATRL1 are patched as the primary Patrol channel.
C-PATRL2, S-PATRL2, and K-PATRL2 are patched as the records check/NCIC channel.
C-PATRL3, S-PATRL3, and K-PATRL3 are patched as the traffic channel.
Fire Units you are likely to hear on this system.
22# North Richland Hills
29# Richland Hills
47# Haltom City
Battallion chiefs and specialized units only use the first 2 digits("Battalion 24", "Heavy Rescue 56", etc.). Most others will be 3 digits, with the 3rd digit being the apparatus's station assignment. Example, Truck 153 is Bedford's Truck at station 3, Engine 201 is Hurst's engine at station 1.
C-ALARM, S-ALARM, and K-ALARM are patched as the fire dispatch channel
C-FIRE2, S-FIRE2, and K-FIRE2 are patched as the primary fire response channel
NEFDA Communications Guidelines