That's incorrect.
For the P25 Phase II system used in Rutherford County, the site is labeled as Simulcast.
Rutherford County Public Safety Trunking System Profile
www.radioreference.com
Here's a map of the transmit towers for the site:
View attachment 123374
Rutherford County Public Safety Site: Simulcast Details
www.radioreference.com
Looking at that system, it appears that most of the talkgroups used by the Rutherford County S.O. are encrypted. Here's a few examples:
View attachment 123375
The
T in the mode column denotes that the talkgroup is using P25 Phase II. The capital
E in the mode column indicates that these TGIDs use encryption full time. No scanner can monitor encrypted radio traffic. There are a few other encrypted talkgroups in use, and also a few that are only encrypted part of the time. That's indicated by the lower case
e in the Mode column.
Smyrna & LaVergne have talkgroups on the statewide TACN system.
Tennessee Advanced Communications Network (TACN) Trunking System Profile
www.radioreference.com
The TACN sites in your county do not appear to be simulcast.
More on Simulcast in the Wiki.
Simulcast digital distortion - The RadioReference Wiki
Location is very important, when it comes to dealing with Simulcast. If you are in the exact 'right' location, you may not have a problem if you are very close to one of the transmit towers, or if your location is such that the signals from other locations are blocked by terrain (hills), a cluster of tall buildings, or something in your house (aluminum siding or foil backed insulation in the walls), then a 325P2
might work, if you can find a 'sweet spot' in your house. Sometimes a move of only a couple of feet make all the difference between getting reception, or getting garbled audio (or nothing at all). In some cases, if you use a directional antenna aimed at one specific location, you might get it to work, but all bets are off the minute you walk out the door & drive around in your vehicle.
Uniden's SDS scanners are the best option, as they were designed with Simulcast issues in mind. The 436HP or 536HP scanners are not as good on simulcast, but sometimes work (again, it all boils down to location). The 325P2 (and it's desktop/mobile sibling the 996P2) are considerably worse at dealing with simulcast.
Your options other than an actual scanner are one of the Unication pagers, or the
Blue Tail Receiver.
A number of the LaVergne PD talkgroups are encrypted, but Smyrna is not. The Unication pagers work well, but you are limited, I believe, to monitoring only one site at a time, and no more than 64 talkgroups. (You can program others, but still are limited to using only one site. The Blue Tail is not a true scanner. It has no display (you program it with your PC), and it must have external power. Your third option would be to use one of the SDR dongles with downloaded software, used with a PC. Again, that is not a true scanner, but does work. However, for most people, that would limit them to only monitoring from a fixed location.
Should you decide to buy a scanner, other than the SDS100 or SDS200, buy only from a dealer that will let you return it without a large penalty (such as a restock fee) if it does not work for you.