|Broadcast area||Chattanooga Metro Area|
|Branding||Music Radio 820|
|First air date||1986|
|Power||1,000 watts day|
|Callsign meaning||The "TN" was chosen when changing the format to country to represent "Tennessee", the state where the station is located and licensed.|
|Former callsigns||WAPO (1986-1993)
|Affiliations||ABC Radio News
Tennessee Radio Network
|Owner||Shelton Broadcasting System
(Shelton Broadcasting System)
The station originally signed-on the air in 1986 playing an adult contemporary format as WAPO, taking the former call-letters of what is now WGOW-AM in Chattanooga. The station switched to an all gospel format around 1990, before changing owners and call-letters in 1993.
The station currently features weekday programming, the John & Heidi Show mornings with hosts John and Heidi Small from 6:00am to 10:00am Central Time. Maddy Jones and Maddy in the Midday from 10:00am until 2:00pm, and The B-Side With Joshua Wayne afternoons from 2:00pm until 6:00pm. Logan Carmichael covers news and local events and can also be heard on weekends, and the station features its own locally produced and hosted bluegrass show, Cold Mountain Bluegrass, hosted by Kyle Holland on Saturday mornings from 8:00am–10:00am Central Time. Sundays are dedicated to a variety of Southern gospel and various religious paid programming.
WTNW is also the flagship station for Marion County High School Warriors football broadcasts each fall.
WTNW is currently owned by Shelton Broadcasting System.
On Saturday, December 31st, 2016, a fire destroyed the historic house at 4306 Main Street in Jasper which housed the transmitting equipment, offices, and studios of WTNW. 
The station has since filed for authorization with the FCC to go silent for an undetermined time, which was granted on January 30th, 2017.
- "WTNW Facility Record". United States Federal Communications Commission, audio division. Retrieved 2010-04-01.
- "Structure fire in Jasper closes roads on New Year’s Eve as local radio station burns". United States MarionCountyMessenger.com. Retrieved 2017-01-04.
- WTNW website
- Query the FCC's AM station database for WTNW
- Radio-Locator Information on WTNW
- Query Nielsen Audio's AM station database for WTNW
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