fcc info on 166.25 mhz and 170.150 mhz

On the condition that harmful interference is not caused to present or
future Federal stations in the band 162-174 MHz, the frequencies
166.25 MHz and 170.15 MHz may be authorized to non-Federal stations,
as follows:

(i) Eligibles in the Public Safety Radio Pool may be authorized to
operate in the fixed and land mobile services for locations within 150
miles (241.4 kilometers) of New York City; and

(ii) Remote pickup broadcast stations may be authorized to operate in
the land mobile service for locations within the conterminous United
States, excluding locations within 150 miles of New York City and the
Tennessee Valley Authority Area (TVA Area). The TVA Area is bounded on
the west by the Mississippi River, on the north by the parallel of
latitude 37° 30' N, and on the east and south by that arc of the
circle with center at Springfield, IL, and radius equal to the airline
distance between Springfield, IL and Montgomery, AL, subtended between
the foregoing west and north boundaries.

from https://www.fcc.gov/sites/default/files/fcctable.pdf