These frequencies are used for interop with agencies not using the TACN TRS, and as back up to the TACN.

TN DHS District 1 covers the following counties:
Carter, Greene, Hancock, Hawkins, Johnson, Sullivan, Unicoi, Washington

TN DHS District 2 covers the following counties:
Anderson, Blount, Campbell, Claiborne, Cocke, Grainger, Hamblen, Jefferson, Knox, Loudon, Monroe, Morgan, Roane, Scott, Sevier, Union

TN DHS District 3 covers the following counties:
Bledsoe, Bradley, Grundy, Hamilton, McMinn, Marion, Meigs, Polk, Rhea, Sequatchie

TN DHS District 4 covers the following counties:
Clay, Cumberland, DeKalb, Fentress, Jackson, Macon, Overton, Pickett, Putnam, Smith, Van Buren, Warren, Wayne, White

TN DHS District 5 covers the following counties:
Cannon, Davidson, Rutherford, Sumner, Trousdale, Williamson, Wilson

TN DHS District 6 covers the following counties:
Bedford, Coffee, Franklin, Lincoln, Marshall, Moore

TN DHS District 7 covers the following counties:
Cheatham, Dickson, Houston, Humphreys, Montgomery, Robertson, Stewart

TN DHS District 8 covers the following counties:
Giles, Hickman, Lawrence, Lewis, Maury, Perry

TN DHS District 9 covers the following counties:
Benton, Carroll, Crockett, Dyer, Gibson, Henry, Lake, Obion, Weakley

TN DHS District 10 covers the following counties:
Chester, Decatur, Hardeman, Hardin, Haywood, Henderson, McNairy, Madison

TN DHS District 11 covers the following counties:
Fayette, Lauderdale, Shelby, Tipton