Radio Info from 2017 MN Mobilization Guide
Forest Net - 173.775 R - 164.125 input - repeaters for N, S, & E
Air to Ground - 168.125 - PL 0.0 - (shared with Superior NF)
Tac 1 - 171.550 - PL 0.0
Tac 2 - 168.20 - PL 0.0 - (IIRC this is a NIFC Tac channel also)