| Houston Police Department - All Districts | Harris | Public Safety | 79 |
| Amarillo Police and Fire | Potter | Public Safety | 59 |
| Texarkana Police and Bowie and Miller County Sheriff | Bowie | Public Safety | 49 |
| Travis County Law Enforcement | Travis | Public Safety | 37 |
| Jefferson County Public Safety | Jefferson | Public Safety | 34 |
| Harris County Law Enforcement - North | Harris | Public Safety | 30 |
| Lubbock City-County Public Safety | Lubbock | Public Safety | 28 |
| Dallas City Police - All Divisions Dispatch | Dallas | Public Safety | 27 |
| Lamar County Public Safety Dispatch | Lamar | Public Safety | 24 |
| Orange County Public Safety | Orange | Public Safety | 22 |
| Houston County Fire/Law Dispatch, City of Crockett Law Dispatch | Houston | Public Safety | 19 |
| Wharton County Public Safety | Wharton | Public Safety | 19 |
| Smith County Sheriff, Tyler Police, and Tyler Fire | Smith | Public Safety | 16 |
| Bastrop County Law Enforcement / Fire / EMS | Bastrop | Public Safety | 15 |
| Guadalupe County Public Safety | Guadalupe | Public Safety | 15 |
| Hardin County Public Safety | Hardin | Public Safety | 14 |
| Nolan County Public Safety | Nolan | Public Safety | 14 |
| Houston Police Department and Harris County Constables | Harris | Public Safety | 13 |
| Rusk County Public Safety | Rusk | Public Safety | 13 |
| Collin County Sheriff, Plano, Allen, Murphy, Colony, Frisco, and Prosper Police | Collin | Public Safety | 12 |
| Galveston and La Marque Public Safety | Galveston | Public Safety | 11 |
| Caldwell County Sheriff, Lockhart and Luling Police | Caldwell | Public Safety | 8 |
| DeWitt County Sheriff and Fire, Cuero Police and EMS | DeWitt | Public Safety | 8 |
| San Patricio County Sheriff Dispatch | San Patricio | Public Safety | 8 |
| Brazos County Area Fire and EMS | Brazos | Public Safety | 7 |
| Bexar County Fire and EMS | Bexar | Public Safety | 7 |
| Kendall County Public Safety | Kendall | Public Safety | 7 |
| Dallas City Police - 1 Central | Dallas | Public Safety | 6 |
| Jim Wells County Public Safety | Jim Wells | Public Safety | 6 |
| Hidalgo County Public Safety | Hidalgo | Public Safety | 6 |
| Killeen Police and Fire | Bell | Public Safety | 6 |
| Parker County Public Safety | Parker | Public Safety | 6 |
| Deaf Smith County Sheriff, Hereford Police and Fire | Deaf Smith | Public Safety | 6 |
| Nocona Fire and Police Dispatch | Montague | Public Safety | 5 |
| San Antonio Fire Dept Automated Dispatch | Bexar | Public Safety | 5 |
| Nacogdoches Public Safety | Nacogdoches | Public Safety | 5 |
| Matagorda County Public Safety | Matagorda | Public Safety | 5 |
| Washington County Public Safety | Washington | Public Safety | 5 |
| Fort Bend County Law Enforcement | Fort Bend | Public Safety | 4 |
| Johnson/Tarrant County Fire | Johnson | Public Safety | 4 |
| Collin County Public Safety | Collin | Public Safety | 4 |
| Jim Hogg County Sheriff Dispatch. | Jim Hogg | Public Safety | 4 |
| Caldwell County Fire/EMS Dispatch | Caldwell | Public Safety | 4 |
| Cy-Fair Fire and EMS | Harris | Public Safety | 4 |
| Hood County Public Safety | Hood | Public Safety | 4 |
| Houston Fire - Digital | Harris | Public Safety | 4 |
| Graham Fire | Young | Public Safety | 4 |
| Stephenville & Erath County Fire/EMS/VFDs | Erath | Public Safety | 3 |
| Zapata County Sheriff Dispatch | Zapata | Public Safety | 3 |
| Walker County Public Safety | Walker | Public Safety | 3 |
| The Colony Police, Fire and EMS | Denton | Public Safety | 3 |
| Bandera County Public Safety | Bandera | Public Safety | 3 |
| Calhoun County EMS Dispatch | Calhoun | Public Safety | 3 |
| Mt. Pleasant and Titus County Fire | Titus | Public Safety | 2 |
| La Salle County Public Safety | La Salle | Public Safety | 2 |
| Lumberton Fire and EMS, Hardin County ESD 2 | Hardin | Public Safety | 2 |
| Dallas City Police - North Central Dispatch | Dallas | Public Safety | 2 |
| Dallas City Fire and Rescue Dispatch | Dallas | Public Safety | 2 |
| Wylie Police and Fire | Collin | Public Safety | 2 |
| Harrison County SO / Marshall Police | Harrison | Public Safety | 2 |
| TX DPS Laredo Sector Dispatch and Mobile | Webb | Public Safety | 2 |
| Waller County Fire and EMS | Waller | Public Safety | 2 |
| New Braunfels Fire Department | Comal | Public Safety | 2 |
| Ennis Police and Fire, Ellis County Sheriff | Ellis | Public Safety | 2 |
| Lake Livingston Area Wide Public Safety | Polk | Public Safety | 2 |
| Fort Worth Fire Department | Tarrant | Public Safety | 2 |
| Jackson County Public Safety | Jackson | Public Safety | 2 |
| Central Panhandle Counties Public Safety | Armstrong | Public Safety | 2 |
| Burleson County Sheriff, Fire and EMS | Burleson | Public Safety | 2 |
| Snyder Fire | Scurry | Public Safety | 2 |
| Uvalde County Law Enforcement (GATRRS) | Uvalde | Public Safety | 2 |
| North Harris, Montgomery, Waller and Walker Counties Fire and EMS | Harris | Public Safety | 2 |
| Brown County Public Safety | Brown | Public Safety | 2 |
| Angelina County | Angelina | Public Safety | 2 |
| Sabine County Firefighters Association | Sabine | Public Safety | 2 |
| Medina County Sheriff | Medina | Public Safety | 2 |
| Bryan/College Station Area Law Enforcement | Brazos | Public Safety | 2 |
| Kenedy Fire | Karnes | Public Safety | 1 |
| Falls County Fire Association | Falls | Public Safety | 1 |
| Port Neches Fire | Jefferson | Public Safety | 1 |
| Texarkana Fire Departments | Bowie | Public Safety | 1 |
| Columbus Fire Ground | Colorado | Public Safety | 1 |
| Dallas Love Field (KDAL) - ATIS | Dallas | Aviation | 1 |
| Dallas Love Field (KDAL) - Tower | Dallas | Aviation | 1 |
| MNTG Fire 1 | Montague | Public Safety | 1 |
| NOAA Weather Radio Amarillo (WXK38) | Armstrong | Other | 1 |
| Mason Fire | Mason | Public Safety | 1 |
| Miller County, AR / Bowie County, TX Public Safety | Bowie | Public Safety | 1 |
| Wise County Fire/EMS | Wise | Public Safety | 1 |
| Fort Stockton Fire | Pecos | Public Safety | 1 |
| Angel Care Ambulance | Bee | Public Safety | 1 |
| Linden Volunteer Fire | Cass | Public Safety | 1 |
| McCamey Fire | Upton | Public Safety | 1 |
| Hunt County Fire and EMS | Hunt | Public Safety | 1 |
| Donley EMS | Donley | Public Safety | 1 |
| Allstar Node 607813 | Erath | Amateur Radio | 1 |
| Montague County Public Safety | Montague | Public Safety | 1 |
| Harris County Sheriff's Department Dispatch | Harris | Public Safety | 1 |
| Baird Volunteer Fire | Callahan | Public Safety | 1 |
| Jefferson Water District 10 | Jefferson | Other | 1 |