LCRA P25 San Marcos

[Snoops94]

Have some updates to the San Marcos P25 site along with talkgroups I could use some help identifying.

Control freq: 774.79375
Voice: 773.29375, 773.58125, 774.04375, 774.32500

Over a 17 hour period:
# Talkgroup Frequency Analysis
# PCT Count TGID Description
35.967 6101 5534 Hays Co SO
13.470 2285 5634 SHays FD/EMS
9.090 1542 5582 SanMarcos PD
6.520 1106 12103 Schertz PD 2
6.272 1064 5640 SanMarcosFD Disp
6.255 1061 65417
2.788 473 40448
2.688 456 5606 TxStUniv PD
2.305 391 65454
1.474 250 512
1.220 207 52736
1.197 203 60958 TXDOT 60958
0.984 167 18176
0.926 157 5635 NorthHays FD
0.654 111 2048
0.643 109 5628 HaysCo JuvDetCtr
0.607 103 11001 NBPD Disp
0.554 94 5513
0.513 87 5509 CTMC ER
0.454 77 65416
0.413 70 58880
0.377 64 65482
0.236 40 5657 SanMarcosFD Ops3
0.230 39 65453
0.230 39 6501 EMS to SetonHays
0.230 39 64512
0.230 39 5636 Hays Fire Ops 1
0.177 30 65433
0.159 27 65411
0.147 25 34048
0.136 23 5603
0.130 22 65460........Hays fire air ops?
0.094 16 11022 Rslute PtRpt
0.088 15 65448
0.083 14 65495
0.077 13 7680
0.077 13 65456
0.077 13 1024
0.071 12 65484
0.071 12 65462
0.071 12 65430
0.059 10 768
0.059 10 65493
0.059 10 65473
0.059 10 65445
0.053 9 65470
0.053 9 65449
0.053 9 65440
0.053 9 65434
0.053 9 65420
0.053 9 65412
0.053 9 63744
0.053 9 5551.......training? Heard talk of snipers and hostages
0.047 8 65494
0.047 8 65489
0.047 8 65485
0.047 8 65479
0.047 8 65477
0.047 8 65437
0.047 8 65431
0.047 8 65427
0.047 8 6400
0.041 7 65488
0.041 7 65487
0.041 7 65471
0.041 7 65452
0.041 7 65441
0.041 7 65439
0.035 6 65500
0.035 6 65492
0.035 6 65491
0.035 6 65490
0.035 6 65483
0.035 6 65476
0.035 6 65472
0.035 6 65463
0.035 6 65442
0.035 6 65436
0.035 6 65423
0.035 6 5602
0.029 5 65498
0.029 5 65480
0.029 5 65435
0.029 5 65432
0.024 4 65475
0.018 3 65481
0.018 3 65414
0.018 3 35072
0.018 3 25856
0.012 2 65474
0.012 2 65425
0.012 2 5637 Hays Fire Ops 2
0.012 2 44800

 

[NC5267]

All of the 65*** are patch groups used to patch channels together from outside or within the system, you can disregard. those, they are not the true talk group for a given channel.

 

[Snoops94]

Understood, what confused me for example is TG:65495 had tone out for South Hays Fire while TG:5634 (SHays FD/EMS) was not active until after the tone out. Patches just seem confusing for this novice, Unitrunker has a tab for patches but I haven't seen anything descriptive and OP25 (what I'm currently using) is pretty bare bones. Thanks for the info though!

 

[rbarker]

For the talkgroup about snipers and Hostages, I'm pretty sure this belongs to ACC Austin Community College. they have been doing exercises this week.

 

[NC5267]

Would ACC be patched to the LCRA P25 system? I know they do have a campus in Kyle if I remember, so I guess Hays County SWAT would be the responding team for that campus.

 

[rbarker]

Google Shows an ACC "Goodnight" center Campus off TX-123. It was their own ACC Campus police doing exercises but may also involved a "police class" and other agencies. This talkgroup would be like one of their backchannels. San Marcos Goodnight Center (SMG) | Austin Community College District. Also a Hays Campus in Kyle 1200 Kohlers Crossing Construction for Hays Campus Phase 2 is underway on new First Responder Training Center. Hays Campus | Austin Community College District

 

[texasemt13]

Texas State University also hosts ALERRT which is a law enforcement training program. They are especially active when campuses are closed and they can do practical training in large buildings.

 

[rattlerbb01]

I have been getting San Marcos PD, Hays Fire, Hays SO and more from the 55/56 range quite regularly on the Bergheim tower. Can anyone closer to the Hays County towers see if they are still just patching or if some of the users may have actually migrated off of OpenSky?

 

[NC5267]

What I was told awhile back from someone that use to work for LCRA was that a user with an affiliated radio on the system has to be on the P25 side channel for Opensky channels to show up on the P25 system( unless a dispatcher creates a patch for interop purposes.) Hence the randomness of when talk groups show up. I also have seen at least on some of Hays and San Marcos fire channels P25 radio ID's pretty regularly. So some of the FD units are staying on the P25 side.

 

[cferguson4809]

Does anyone have any ideas about how San Marcos/Hays County fire and ems is set up? I have been trying to wrap my head around why the same talk groups appear to be dispatching everyone. My guess, although this is unconfirmed, is that there are several station alert talkgroups, there is a shared channel for departments to communicate with dispatch and then departments have individual operations channels.
I feel like some of the talkgroups on RR main page might also be mislabeled, but I may not understand the method to the madness.

 

[motorola_otaku]

Understood, what confused me for example is TG:65495 had tone out for South Hays Fire while TG:5634 (SHays FD/EMS) was not active until after the tone out. Patches just seem confusing for this novice, Unitrunker has a tab for patches but I haven't seen anything descriptive and OP25 (what I'm currently using) is pretty bare bones. Thanks for the info though!

65xxx talkgroups are also used for console multi-selects. I'd hazard a guess that the different departments or stations all have individual talkgroups for station alerting, and when a call is dispatched the dispatcher selects those talkgroups along with primary dispatch to tone/voice the call. That's fairly common on both EDACS and Harris P25 systems. The process can also be automated with a CAD interface, or the multi-selects can be pre-built on the console so the dispatcher only has to click a single button. To a system radio it's completely transparent, but a scanner isn't "smart" enough to recognize that a SAID (system assigned ID) is the "same" talkgroup as primary dispatch.