Texas Juvenile Justice Department P25

[mwjones]

Was out on one of my many "get out of town and drive the backroads" day trips today, and went near the Gainesville State School in Cooke County. The scanner stopped searching in the 700Mhz band and presented me with a (previously unreported) P25 system on the air. Firing up DSDPlus on the laptop I was able to get quite a bit of information, and despite not having a license, was able to determine it is the School facility (scanner pegged with no antenna attached while driving past the front gate).

The two talkgroups were encrypted (boo) but the radio ID's all align with the state radio plan for state agencies. I have submitted everything I was able to learn to the RRDB, which should update soon, but being this is site 3 (but no neighbors being broadcast), it is likely other facilities may be on the system as well, and those within earshot of them might look for additional sites.

Here's the DSDPlus Data files:

DSDPlus.P25data:

 --------------------------------------------------------------------------------------------------

  Network: BEE00.AB4

  Bandplan #0:   Base=851.00625   Offset=-45     Spacing=6.25  BW=12.5
  Bandplan #1:   Base=762.00625   Offset=+30     Spacing=6.25  BW=12.5
  Bandplan #2:   Base=851.01250   Offset=-45     Spacing=12.5  BW=12.5  Slots=2
  Bandplan #3:   Base=762.00625   Offset=+30     Spacing=12.5  BW=12.5  Slots=2
  Bandplan #4:   Base=935.01250   Offset=-39     Spacing=12.5  BW=12.5
  Bandplan #5:   Base=935.01250   Offset=-39     Spacing=12.5  BW=12.5  Slots=2


    Site: 1.3    NAC=AB3

    Channel 1-1194:   769.46875    CC
    Channel 1-1268:   769.93125        SCC
    Channel 1-1314:   770.21875             VOICE
    Channel 1-1388:   770.68125             VOICE


 --------------------------------------------------------------------------------------------------

DSDPlus.groups:

;

P25,       BEE00.AB4, 2000,       50,  Normal,      20,  2021/09/06 12:14,  ""
P25,       BEE00.AB4, 2002,       50,  Normal,      39,  2021/09/06 12:20,  ""

DSDPlus.radios:

   ;;



P25,       BEE00.AB4, 2000,       5258473,    50,  Normal,       7,  2021/09/06 12:05,  ""
P25,       BEE00.AB4, 2000,       5258475,    50,  Normal,       2,  2021/09/06 11:44,  ""
P25,       BEE00.AB4, 2000,       5258509,    50,  Normal,       0,  2021/09/06 12:06,  ""
P25,       BEE00.AB4, 2000,       5258510,    50,  Normal,       5,  2021/09/06 11:44,  ""
P25,       BEE00.AB4, 2000,       5258511,    50,  Normal,       3,  2021/09/06 11:51,  ""
P25,       BEE00.AB4, 2000,       5258517,    50,  Normal,       1,  2021/09/06 12:14,  ""
P25,       BEE00.AB4, 2000,       5258520,    50,  Normal,       1,  2021/09/06 12:05,  ""
P25,       BEE00.AB4, 2000,       5258529,    50,  Normal,       1,  2021/09/06 11:29,  ""


P25,       BEE00.AB4, 2002,       5258471,    50,  Normal,       1,  2021/09/06 12:20,  ""
P25,       BEE00.AB4, 2002,       5258472,    50,  Normal,      20,  2021/09/06 12:20,  ""
P25,       BEE00.AB4, 2002,       5258474,    50,  Normal,       4,  2021/09/06 12:13,  ""
P25,       BEE00.AB4, 2002,       5258476,    50,  Normal,       4,  2021/09/06 12:08,  ""
P25,       BEE00.AB4, 2002,       5258503,    50,  Normal,      10,  2021/09/06 12:20,  ""

 

[mikebennett]

Glad to know this. I was wondering what happened to them on VHF.

 

[mwjones]

And the system is now up on RRDB:

Texas Juvenile Justice Department Trunking System, Various, Texas

Texas Juvenile Justice Department Trunking System Profile

www.radioreference.com

 

[rattlerbb01]

Guess I'll have to listen closer next time I go through Giddings. We have a poster and submitter that has been updating us on the LCRA rollout in Brownwood, maybe he can listen to the Ron Jackson facility there. AFAIK, Gainesville, Giddings and Brownwood are the only three institutions left in the old TYC. Crockett, Sheffield, Pyote and others closed en masse over the last 15 years or so.

 

[mwjones]

Guess I'll have to listen closer next time I go through Giddings. We have a poster and submitter that has been updating us on the LCRA rollout in Brownwood, maybe he can listen to the Ron Jackson facility there. AFAIK, Gainesville, Giddings and Brownwood are the only three institutions left in the old TYC. Crockett, Sheffield, Pyote and others closed en masse over the last 15 years or so.

According to the state website, there's Edinburg, Gainesville, Giddings, Mart, Brownwood and Odessa (Odessa looks to share facilities with the county). There is a VHF License for Mart already, so its might have switched over as well.

There's also 5 halfway houses and 11 district offices, but I am doubtful they would invest in setting up a site for each of those facilities (they didn't seem to have them before, so I doubt they do now, but I'll check the Fort Worth Halfway House and District Office the next time I'm on that side of the Metroplex.

 

[memo124]

According to the state website, there's Edinburg, Gainesville, Giddings, Mart, Brownwood and Odessa (Odessa looks to share facilities with the county). There is a VHF License for Mart already, so its might have switched over as well.

There's also 5 halfway houses and 11 district offices, but I am doubtful they would invest in setting up a site for each of those facilities (they didn't seem to have them before, so I doubt they do now, but I'll check the Fort Worth Halfway House and District Office the next time I'm on that side of the Metroplex.

I'm in Edinburg and they are still using VHF.

 

[rattlerbb01]

I just looked at their website, and main institutional locations are Edinburg, Giddings, Gainesville and Brownwood. I would focus on Giddings and Brownwood since memo124 already checked Edinburg.

 

[HiddenLefty]

Might have found Brownwood.
Unitrunker information enclosed.
Very little audio, much suspicion of encryption.

 

[rattlerbb01]

Might have found Brownwood.
Unitrunker information enclosed.
Very little audio, much suspicion of encryption.

Good find, that is site 1.1

 

[HiddenLefty]

Good find, that is site 1.1

Seems like a site 1.2 should exist logically here. Maybe it's Giddings or Mart as that is still open also I think. It was mid last year anyway.

 

[rattlerbb01]

Probably Giddings, it’s still one of their big facilities.

 

[rattlerbb01]

I added site 1.1. Interestingly enough, they re-use the same 4 frequencies on both sites found so far. Shouldn't be a problem with the way they're spread out.

 

[rattlerbb01]

I found site 1.4 tonight in Giddings. Tower is due north of the CEFCO truck stop in the antenna farm there along US 290. It has been added to the database along with encrypted TG 4000 that was used a few times. This site was using Phase 1 voice, no TDMA observed.

Network: BEE00.AB4

Bandplan #0: Base=851.00625 Offset=-45 Spacing=6.25 BW=12.5
Bandplan #1: Base=762.00625 Offset=+30 Spacing=6.25 BW=12.5
Bandplan #2: Base=851.0125 Offset=-45 Spacing=12.5 BW=12.5 Slots=2
Bandplan #3: Base=762.00625 Offset=+30 Spacing=12.5 BW=12.5 Slots=2
Bandplan #4: Base=935.0125 Offset=-39 Spacing=12.5 BW=12.5
Bandplan #5: Base=935.0125 Offset=-39 Spacing=12.5 BW=12.5 Slots=2


Site: 1.4 NAC=AB4

Channel 1-1234: 769.71875 CC
Channel 1-1268: 769.93125 SCC
Channel 1-2004: 774.53125 VOICE