If it is NPS NTNP.. Then its Rangers as they are only ones running full time E.
Natchez Trace Parkway
This is an linked P25 Repeater network extending from Natchez Northeast through Tupelo, and into Tennessee. Operations overnight are dispatched vias Tupelo Public Safety, and are in the clear. During primary operations hours, all NTNP Ranger operations are full time encrypted. The only other time NTNP Rangers are in the clear are when interop with various County, and Municipal Law Enforcement Agencies.
Frequency License Type Tone Alpha Tag Description Mode Tag
163.02500 RM 293 NAC NTNP LE-1 Rangers Primary Side 1 *Encrypted* P25E Federal
162.16250 RM 293 NAC NTNP LE-2 Rangers Primary Side 2 *Encrypted* P25E Federal
165.60000 RM NTNP M-1 Maintenance Primary Side 1 *Clear* P25 Federal
166.23750 RM NTNP M-2 Maintenance Primary Side 2 *Clear* P25 Federal