State of Tennessee Troopnet Discussion - Page 6

ka4bni · #**101** (**permalink**) 01-19-2013, 10:29 PM

Quote:

Originally Posted by rkm1215

I thought only CID and spec ops were supposed to be encrypted for THP what changed?

The first programming templates we're receiving from Motorola have the two Dispatch talk groups and the car to car talk group, in each district, encrypted. There will be some non-encrpyted Mutual Aid and event talk groups for each district, but unless there is a change, the Dispatch talkgroups will be encrypted.

n4yek · #**102** (**permalink**) 01-20-2013, 6:55 AM

Quote:

Originally Posted by ka4bni

The first programming templates we're receiving from Motorola have the two Dispatch talk groups and the car to car talk group, in each district, encrypted. There will be some non-encrpyted Mutual Aid and event talk groups for each district, but unless there is a change, the Dispatch talkgroups will be encrypted.

Thanks for that input, that just saved me $500. I was going to purchase the GRE PSR 800, but since things are going to be encrypted there is no use for it.

W4ELL · #**103** (**permalink**) 01-20-2013, 10:12 AM

Yeah... This is disappointing. Admittedly, I don't listen to a lot of THP traffic these days but I was looking forward to doing so on the new system. I was going to hold out for the Uniden TDMA offering, when/if it sees the light of day, but this kind of news helps me save my money.

Sent from my Nexus 7 using Tapatalk HD

ka4bni · #**104** (**permalink**) 01-21-2013, 10:28 AM

TEMA will still be using the system and they are not planning to go encrypted. Eventually most all state agencies will probably go to this system and they (with the exception of TBI) will most likely not be encrypted either.

rkm1215 · #**105** (**permalink**) 01-21-2013, 12:26 PM

Good news on the possibility of other state agencies, but why would THP dispatch need to be encrypted? I understand TBI and investigations, but not everyday traffic.

Thunderbolt · #**106** (**permalink**) 02-06-2013, 4:25 AM

The state of Tennessee is planning to add two more sites to the Troopnet Network. They are in:

Bartlett in Shelby County.
Williston in Fayette County.

FCC application.

73's

Ron

doctree2 · #**107** (**permalink**) 02-06-2013, 7:58 AM

Any movement from TDOT or will they maintain their current system?

ki4gyw · #**108** (**permalink**) 02-14-2013, 6:24 PM

Hopefully they are not using AES-GCM, I bought a PSR-800 now its useless, time to start logging P25 data packets and get something out of it or at least the signaling portion. Why 10-45's have to be encrypted the world will never know. Should of just stuck with the SDR and OP25 on the linux box!

jimg · #**109** (**permalink**) 02-15-2013, 3:55 PM

Quote:

Originally Posted by ka4bni

The first programming templates we're receiving from Motorola have the two Dispatch talk groups and the car to car talk group, in each district, encrypted. There will be some non-encrpyted Mutual Aid and event talk groups for each district, but unless there is a change, the Dispatch talkgroups will be encrypted.

Do you believe they will change this and decide not to encrypt?

jimg · #**110** (**permalink**) 03-02-2013, 11:20 AM

UPDATE:
This week I began receiving a strong signal, five bars, on 770.03125 in the Murfreesboro/Rutherford Co. area. But, no voice or any kind of sound. This is the same as I have been receiving on 771.25625 which, I assume, is somewhere in Grundy County. Does any one have any ideas on this?

milf · #**111** (**permalink**) 03-02-2013, 4:45 PM

As soon as a "Area" of the system is up you'll get more than a carrier signal. When a site is first brought online with big P25 systems, all they run is a carrier signal untill the whole "Area" is up. This may be as few as 2 sites, or as many as 35 if they want an entire Zone in the "Area". The next step is to turn on Site Trunking, and thats when you can get initial SysID, etc. Then Area Trunking is turned on and you can then nab Nieghbor Sites etc. Then once all the Areas in a Zone are in Area Trunking range testing can begin. So far your hearing at least 2 sites in carrier mode.

jimg · #**112** (**permalink**) 03-02-2013, 10:15 PM

Quote:

Originally Posted by milf

As soon as a "Area" of the system is up you'll get more than a carrier signal. When a site is first brought online with big P25 systems, all they run is a carrier signal untill the whole "Area" is up. This may be as few as 2 sites, or as many as 35 if they want an entire Zone in the "Area". The next step is to turn on Site Trunking, and thats when you can get initial SysID, etc. Then Area Trunking is turned on and you can then nab Nieghbor Sites etc. Then once all the Areas in Zone are in Area Trunking range testing can begin. So far your hearing at least 2 sites in carrier mode.

I am picking up the aforementioned carrier signals on my 396XT, but not my GRE PSR 800. I'm not even getting the "T" symbol on the GRE 800 on any the "Troopnet" frequencies/sites that I have programmed in, but both radios still receive the TVTRS. Any idea as to why that might be?

milf · #**113** (**permalink**) 03-03-2013, 1:52 AM

There is no trunking happening yet. It is just a carrier signal. There is no data, control chan, anything yet. All this is is showing that the site can indeed broadcast a signal. Once the other sites in this particular area are ALL online with a carrier signal and can ALL hear each other, the next step is to turn on each site's actual data vias the control chan. Each site will begin in Site Trunking mode until the techs are satisfied that they all are working properly on the network and working with the zone controller. Then they will turn on the Wide Area Trunking mode. Until the Control Chan starts broadcasting the system's data in at least Site Trunking its not a part of any network yet. Your scanner can't tell you its a trunked system until it is one, and that has not happened yet. ALL the TVRTRS sites have been fully online, and in Wide Area Trunking for quite some time. Thats why you can decode the Control Chan data with your scanner for them.

Think of it like this: You have a car... But its prety much useless without the motor running, the transmission working, and at least 5 wheels. A trunked Radio System is like that. You may have a Mobile Radio, Repeaters, Zone Controlers, Towers, HT's, etc... But it is just a bunch of techno junk until you have the power, software, control chan broadcasting the data, and so on. Or better yet: Do you have a wireless router? If so do this experiment: Unplug your internet input to the router, but leave the router on and broadcasting. Check your WiFi devices. They will ALL show you have an WiFi connection. BUT - You won't have a bit of internet at all! Thats whats going on with the TroopNET so far... Yeah there is a radio signal... But NO data on it.

jimg · #**114** (**permalink**) 03-03-2013, 3:03 PM

Quote:

Originally Posted by milf

There is no trunking happening yet. It is just a carrier signal. There is no data, control chan, anything yet. All this is is showing that the site can indeed broadcast a signal. Once the other sites in this particular area are ALL online with a carrier signal and can ALL hear each other, the next step is to turn on each site's actual data vias the control chan. Each site will begin in Site Trunking mode until the techs are satisfied that they all are working properly on the network and working with the zone controller. Then they will turn on the Wide Area Trunking mode. Until the Control Chan starts broadcasting the system's data in at least Site Trunking its not a part of any network yet. Your scanner can't tell you its a trunked system until it is one, and that has not happened yet. ALL the TVRTRS sites have been fully online, and in Wide Area Trunking for quite some time. Thats why you can decode the Control Chan data with your scanner for them.

Think of it like this: You have a car... But its prety much useless without the motor running, the transmission working, and at least 5 wheels. A trunked Radio System is like that. You may have a Mobile Radio, Repeaters, Zone Controlers, Towers, HT's, etc... But it is just a bunch of techno junk until you have the power, software, control chan broadcasting the data, and so on. Or better yet: Do you have a wireless router? If so do this experiment: Unplug your internet input to the router, but leave the router on and broadcasting. Check your WiFi devices. They will ALL show you have an WiFi connection. BUT - You won't have a bit of internet at all! Thats whats going on with the TroopNET so far... Yeah there is a radio signal... But NO data on it.

Thanks very much for answering my question and the analogies!

milf · #**115** (**permalink**) 03-03-2013, 4:06 PM

No problem

jimg · #**116** (**permalink**) 03-19-2013, 7:29 PM

Any updates on when Troopnet might go "live" or what the frequences will be? I received a report today, from a reliable source, that the Chattanooga District (#2), may be switching over to the new system by the end of this month. Can anyone advise?

RadioCopFFFR · #**117** (**permalink**) 03-25-2013, 11:01 AM

New talkgroup found 15302 on the Memphis Site. Referring to mobile command, processing, and tents. I could not find any info posted in the talkgroup tables regarding this talkgroup. Radio IDs 1011511,1011517,110523, 1011525

milf · #**118** (**permalink**) 03-25-2013, 1:24 PM

Sounds like one of the following: National Gaurd, TEMA, Red Cross..... Glad to hear that TVR/TroopNET Memphis Site is getting usage.

To answer that query about freqs and when it all goes active: Some sites will be 800, some 700, some VHF High. Portions are already active vias TVR system, others are under construction, others still being researched/ granted etc.....

The buildout of an system takes time. You have to jump through hoops for the following FED agencies: EPA, FAA, FCC. Then you have various State level agencies to deal with. Then Contractors, and Sub-Contractors for: Site Prep, Shed Construction, Tower Construction, Electircal Power Suppliers, Installation of Antennas, Microwave Relays, Repeater Gear, Software Programming. Then you start the process of Signal Testing, Site Trunking Testing, Wide Area Trunking Testing, Range Testing, Acceptance etc.... A single site can take from 6 months to over a year to get up and online fully. An entire region at least a year. A WHOLE state can take multiple years! Thats not factoring in weather delays etc....

Pure TroopNET only sites will have ONLY 3 frequencies per repeater. They will be P25 Phase 2 in compatability mode with primarily TDMA talkgroups. The whole system will also be linked with the TVR, as well as other regional systems in planning, or soon to begin buildout.

USNSPARKS · #**119** (**permalink**) 03-27-2013, 10:41 PM

New talkgroup picked up off the TVR system. 47004 is THP 2nd District out of Lookout Valley TN off the I-24 exit 174 a few miles West of Chattanooga TN. I hear dispatch and the TRPs replies but occasionally the talk group keys up and I hear nothing at all which is strange. THP 2nd District goes from Chattanooga halfway to Knoxville and Nashville and covers the 11 counties in between. As a former THP 2nd District dispatcher I find this new talkgroup to be really interesting. I have to hunt up the THP 10 code list and reacquant myself with it!

davewhall29 · #**120** (**permalink**) 03-28-2013, 6:59 AM

I picked up TGID 47004 overnight last night. I identified unit numbers 2200s and 2300s which correspond with Chattanooga District THP unit ids. First transmission I heard was a female dispatcher reading back a driver's license history and a male officer responding. I also heard a couple of different units going 10-7 at 7 am today.
On one transmission I heard a 2300 unit number escort someone to the "McDonalds at exit 114." I researched that and found a McDonalds at exit 114 off I-24 in Manchester.
So my guess is it is Chatt. THP, but have not confirmed it yet. I figure it is THP based on unit numbers, locations and fact that the TGID 47XXX is similar to the State Capital Security TGID is 47XXX.
BTW, heard it on the Oral TVRTS site, using my PSR 800. Have not confirmed yet if it is Phase I or II. Will be listening for more info.

Anyone who can listen & help identify the TGID feel free to let me know what they come up with.