http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-00-348A1.pdf
"90. Under our Rules, an entity must have a license to operate a base or control station on these
interoperability channels.286 Mobile operation, however, is permitted on these channels without an
individual license (i.e., a blanket licensing approach).287 Public safety licensees who are eligible to hold a
Part 90 license, or who are otherwise licensed under Part 90 of our Rules, can operate mobile units on
these interoperability channels without an individual license. Additionally, as suggested in comments, we
also will require, as of January 1, 2005, every newly certified public safety mobile radio unit to have the
capacity to transmit and receive on at least one nationwide interoperability channel (i.e., the calling
channel) in the band in which it is operating.288"