3.113 confirmed as Eagle Pass
CBP P25 Trunked System 4D5 showing up in San Antonio
- Thread starter blantonl
- Start date
Moved over to Karnes City and found a strong signal for 4D5 3.115 on 169.7625, NAC 4D2. It comes in with no antenna from Karnes City south, probably a tower near the ICE detention centers.
3.111 - Strong along TX 44 between Encinal and US 83
172.3875 4D2
Will try and track this one down at some point. Would guess MM 18 area near Botines, but remains to be seen.
172.3875 4D2
Will try and track this one down at some point. Would guess MM 18 area near Botines, but remains to be seen.
3.95 is the Laredo area site. Three of the control frequencies matched up to the known site, I updated the database with the proper site number and 173.575 current CC.
I live in West Texas and monitor many Border Patrol Frequencies. The frequencies are all P25, with some encryption. I am familiar with the term NAC (Network access Code). My scanner, a BCD 996P2, will search for the NAC on an active frequency. I am not familiar with the terms RFSS or Site ID. I do not know if my scanner will detect these items. I have not been able to figure that out. Is there some information on this website that explains these items and their usefulness to a scanner listener? Or can someone give such information to me directly? I am a retired Border Patrol Agent. I am a licensed Ham Radio operator and a scanner listener since I was a teenager. Thank you for any information you can pass my way.
If you tune to the P25 frequency and it is a trunk site, i.e. continuous data stream with no voice, then you’re locked onto the P25 control channel. Most of the new CBP sites are in the 169-174 range. I believe you would have to enable CC Data Output and connect your scanner to a Trunked Data Recorder to read the data, as I am not familiar with that line of scanner.
Has anyone come across any talkgroups yet? I left a radio on the San Antonio site for a while and got nothing. Clear or encrypted.
Nope, nothing yet. The remote sites in stx don’t even advertise an alternate CC yet. None of them show neighbors. It is still being rolled out. I scan every site I have logged but I would bet that with them being able to strap encryption to TGs we will probably hear nothing. I am thankful just to be able to hear helicopters and occasional units on the conventional sites still.
Getting two new sites east of San Antonio along I-10. Haven’t gotten close enough to any of them to ID a tower or location yet:
3-100 173.9375 started picking up in Luling
3-116 172.0500 started in Seguin and began fading in Flatonia
That said there has been a decent band opening this morning
3-100 173.9375 started picking up in Luling
3-116 172.0500 started in Seguin and began fading in Flatonia
That said there has been a decent band opening this morning
nd5y
Member
Does anybody know if there are still conventional CBP/ICE repeaters in areas where this system is being built or did it replace them?
Yes, there are still conventional P25 Nets all over. The system is still in rollout mode
3-116 on 172.050 appears to be Kyle. Did not confirm an exact tower location but the signal was very hot while approaching and leaving Kyle along I-35.
3-100 on 173.9375 was detected weakly from Paige to Bastrop but then faded away.
3-100 on 173.9375 was detected weakly from Paige to Bastrop but then faded away.
Heard in San Antonio during recent band openings: 172.0500, 172.3375, 173.9375, 173.9875.
3-114 is Comstock, confirmed. 173.7875 NAC 4D0.
Caught something that has been puzzling me in action multiple times on the Cotulla site tonight. I was driving through Cotulla and saw where the only listed control channel 170.700 suddenly drops and begins displaying this unhandled opcode message along with two other frequencies that must be associated with that site, 169.700 and 170.0875. Maybe someone smarter than me can decipher?
Confirmed another site, 3.111 is south of Encinal
Adding two more that are presumably in the valley somewhere, since that is where the skip is very strong on the fed vhf tonight:
Site: 3.91 NAC=4D2
Channel 10-2705: 169.8125 SCC
Channel 10-2725: 170.0625 SCC
Channel 10-2904: 172.3 CC
Site: 3.94 NAC=4D2
Channel 10-2708: 169.85 CC
Adding two more that are presumably in the valley somewhere, since that is where the skip is very strong on the fed vhf tonight:
Site: 3.91 NAC=4D2
Channel 10-2705: 169.8125 SCC
Channel 10-2725: 170.0625 SCC
Channel 10-2904: 172.3 CC
Site: 3.94 NAC=4D2
Channel 10-2708: 169.85 CC
Failsoft?
Project25_MASTR
Millennial Graying OBT Guy
The CBP sysID is the same as it was for the preceding K Core(s) and it appears to have been migrated to a M Core. If I'm reading into this correctly, the reason the trunking is in Zone 3 is because the southern (i.e. southern border) K core should have been migrated to Zone 1 and the northern K Core should have been migrated to Zone 2. At least, that was what I had heard 5 years or so ago when I was doing some southern K Core projects (mainly Centracom GEII's to MCC7500). Then, the RGV and Arizona guys still had a lot of Astro Spectras in service...mostly XTLs and APXs for portables though.
What program are you using ?
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