The state of Tennessee Advanced Communications Network (TACN)

[buddrousa]

TACN is wanting to free up space and get 2 slots per frequency and not have to install more racks and acquire more frequencies.

 

[jblackst]

It's got more to do with system capacity I suspect. I think KFD also still has some FDMA radios on their station alerting equipment.

 

[johnoconnor98]

TACN is wanting to free up space and get 2 slots per frequency and not have to install more racks and acquire more frequencies.

There is also only a limited number of frequencies. It is becoming harder and harder to find additional frequencies that don't interfere with your neighbors.

 

[slatescan]

I see Maury County is moving to TACN soon. Do we know a timeline?

 

[buddrousa]

That answer would come from Maury County Goverenment. Nobody else would have that answer .

 

[FFPM571]

That answer would come from Maury County Goverenment. Nobody else would have that answer .

There are others. Motorola and the vendor doing the work, TACN

 

[buddrousa]

Which neither will tell you if you call them and ask when is said x joining to join.
There are questions.
1. Does a site have to be added.
2. Does the Radio Vender have all the radios and equipment on hand.
This takes time for all the pieces of the puzzle to fit together.

 

[jblackst]

For example. I know of a city that has dozens of talk groups (fire, law, govt, pub works, etc) on the TACN system, loaded and ready to go. They've been there at least a year, and the city itself claims they have 'no idea' when or even if they're going to switch over because they haven't even bought compatible radios (as of late 2025).

And that's for a city in an existing coverage area that is already built out.

 

[THEMAGICMAN]

For example. I know of a city that has dozens of talk groups (fire, law, govt, pub works, etc) on the TACN system, loaded and ready to go. They've been there at least a year, and the city itself claims they have 'no idea' when or even if they're going to switch over because they haven't even bought compatible radios (as of late 2025).

And that's for a city in an existing coverage area that is already built out.

Sadly That's going to be alot of reasons agencies will not be coming onto TACN especially with only being able to use TDMA equipment now or agencies having to upgrade their whole fleet from older equipment without any grants or assistance ☹️

 

[buddrousa]

Then they need to spend a lot of money hiring a radio consultant to do the tower site coverage graphs and spend hundreds of thousands of dollars to build their own system keep it up repair it service the backup generators put together redundant links so the system works 100% just like the TACN Sites did and are still doing without power due to the ice storm.
If you cannot buy just the radios you will never have a stable emergency radio system. The County Officials need to keep their hands out of their pockets and do the job the people elected them to do.

 

[ropin4gold]

https://www.wkrn.com/news/local-news/moore-county-joins-state-emergency-radio-network/

 

[RS5T_RRO]

For example. I know of a city that has dozens of talk groups (fire, law, govt, pub works, etc) on the TACN system, loaded and ready to go. They've been there at least a year, and the city itself claims they have 'no idea' when or even if they're going to switch over because they haven't even bought compatible radios (as of late 2025).

And that's for a city in an existing coverage area that is already built out.

Are you talking about Clinton? That sounds a lot like them lol

 

[Originaldash10]

Montgomery County one step closer to construction of new radio tower for public safety departments - ClarksvilleNow.com

In an effort to improve communications between county and city public safety departments, the County Commission approved a long-term lease agreement for a portion of land in southwestern Montgomery County to construct a radio communications tower.

clarksvillenow.com

Montgomery County is switching to TACN even though the city of Clarksville was already on it since 2014. Sadly a radio tech I spoke with said all emergency services will be encrypted with big E. New TGIDs are popping up right now. They’ll be in the 17500 range

 

[THEMAGICMAN]

Montgomery County one step closer to construction of new radio tower for public safety departments - ClarksvilleNow.com

In an effort to improve communications between county and city public safety departments, the County Commission approved a long-term lease agreement for a portion of land in southwestern Montgomery County to construct a radio communications tower.

clarksvillenow.com

Montgomery County is switching to TACN even though the city of Clarksville was already on it since 2014. Sadly a radio tech I spoke with said all emergency services will be encrypted with big E. New TGIDs are popping up right now. They’ll be in the 17500 range

That's the NORMAL for all new agencies coming onto the system

 

[FFPM571]

That's the NORMAL for all new agencies coming onto the system

Not all... Robertson EMS/EMA/Fire and county services are not It's a Agency by Agency decision

 

[buddrousa]

Neither is Obion County and Union City

 

[Originaldash10]

Is LifeFlight switching to TACN as well? I found a new channel for LifeFlight 8 this morning, it came up on 50992 on Clarksville Tower. They were responding to a scene and were communicating and everything like they would on the frequency.

 

[buddrousa]

Did you liik up the tg in the rr tacn database

 

[Originaldash10]

Did you liik up the tg in the rr tacn database

I only see the stateside TG 48250

 

[jblackst]

You probably heard them on a 'local' tac or talk TG. The SW airmed plan has Air to Ground LZ Comms supposed to use the four LZ TGs, but I would suspect a new set of TGs might exist local to that area?