Tennessee Homeland Security District 7
From The RadioReference Wiki
PLEASE READ THESE NOTES REGARDING THIS SYSTEM !!!
This NXDN4800, 6.25kHz trunked system is a seven county regional trunking system initiated by the Tennessee Homeland Security Distict 7 council of Montgomery, Stewart, Houston, Humphreys, Cheatham, Dickson and Robertson Counties to allow interoperable communications.
Some frequencies are licensed to Greer Communications, service provider of the system.
Some are in the normal public safety bands, some are in the normal business bands.
Business users are also on the system.
The system uses a 6.25kHz channel spacing and each site's channel mapping plan is unique.
Site RAN's are same as Site ID #. By searching the 451-455 Mhz and 460-465 Mhz bands, this system should be able to be mapped correctly.
SITES 01 through 19 are in the correct order for programming the TRX-1 and TRX-2 scanners to follow the system.
ANY HELP IN DETERMINING THE CORRECT FREQUENCIES ON OTHER SITES WOULD BE APPRECIATED. ANY CORRECTIONS ARE GREATLY APPRECIATED.
Programming this system for the TRX-1 and TRX-2:
Program the site(s) of interest in the order shown.
Set Site Threshold Low to 50%.
Set Site Threshold High to 95%. Set Site Dwell to 20 (2 seconds). Set Talkgroup Delay to 20 (2 seconds). Program the RAN code as HEX - NOT DECIMAL!!! If in doubt, leave it to "ANY". Do NOT check NXDN-D setting. Band Plan to USA.
Channel Maps listed below are from DSD+
Channel Map for Site 01 - Clarksville
019 451.881250 Mhz 021 451.893750 Mhz 045 452.287500 Mhz 271 461.375000 Mhz 273 461.387500 Mhz 397 463.512500 Mhz 503 452.334375 Mhz 504 452.337500 Mhz
Channel Map for Site 03 - Dover
131 TBD 209 TBD 259 TBD 269 TBD 281 TBD 302 TBD 411 TBD 505 453.50625 Mhz 508 TBD
Channel Map for Site 04 - McKinnon
509 TBD 510 TBD 511 TBD 512 453.31875 Mhz
Channel Map for Site 05 - Cumberland City
513 TBD 514 TBD 515 TBD 516 453.24375 Mhz
Channel Map for Site 06 - Dickson
059 TBD 098 TBD 125 TBD 236 460.4375 Mhz 519 TBD 520 TBD
Channel Map for Site 07 - Charlotte
074 453.2375 Mhz 086 TBD 446 TBD 448 TBD 485 TBD
Channel Map for Site 08 - Erin
070 TBD 145 TBD 232 460.4250 Mhz
Channel Map for Site 09 - Sage Hollow
143 453.7875 Mhz
Channel Map for Site 10 - Stewart
227 460.36875 Mhz
Channel Map for Site 17 - Ashland City
224 460.36250 Mhz 242 460.61250 Mhz 281 461.46250 Mhz 395 463.46250 Mhz 422 463.68750 Mhz 501 464.93750 Mhz
Channel Map for Site 18 - Pleasant View
251 460.36750 Mhz 323 461.83750 Mhz 392 463.48750 Mhz 459 464.46250 Mhz