For CC's neck of the woods I found the FCC listing for the following:
Callsign: WZZ788
Radio Service: RP Broadcast Auxiliary Remote Pickup
Status: Active Grant Date: 09/08/2000
Site: 1 Address: 3226 JEFFERSON RD City: ASHTABULA, OH County: ASHTABULA
Coordinates: 41° 48' 58.2" N, 80° 46' 51.3" W
Frequency: 170.15000000
Site: 2 City: ASHTABULA, OH County: ASHTABULA
Coordinates: 41° 48' 58.2" N, 80° 46' 51.3" W
Frequency: 170.15000000
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Callsign: KM7108 Licensee: BEACON BROADCASTING, INC. City: WARREN, OH
Radio Service: RP Broadcast Auxiliary Remote Pickup Status: Active Grant Date: 08/30/2000 Expiration: 10/01/2012
Site: 1 City: NILES, OH County: TRUMBULL
Coordinates: 41° 7' 56.2" N, 80° 45' 39.3" W
Frequency: 170.15000000
I cannot see a remote broadcast being encrypted.
The only federal user I have listed for that frequency is the FAA.