Sec. 90.179  Shared use of radio stations.

    Licensees of radio stations authorized under this rule part may 
share the

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use of their facilities. A station is shared when persons not licensed 
for the station control the station for their own purposes pursuant to 
the licensee's authorization. Shared use of a radio station may be 
either on a non-profit cost shared basis or on a for-profit private 
carrier basis. Shared use of an authorized station is subject to the 
following conditions and limitations:
    (a) Persons may share a radio station only on frequencies for which 
they would be eligible for a separate authorization.
    (b) The licensee of the shared radio station is responsible for 
assuring that the authorized facility is used only by persons and only 
for purposes consistent with the requirements of this rule part.
    (c) Participants in the sharing arrangement may obtain a license for 
their own mobile units (including control points and/or control stations 
for control of the shared facility), or they may use mobile stations, 
and control stations or control points authorized to the licensee.
    (d) If the licensee shares the land station on a non-profit, cost 
shared basis to the licensee, this shared use must be pursuant to a 
written agreement between the licensee and each participant which sets 
out (1) the method of operation, (2) the components of the system which 
are covered by the sharing arrangements, (3) the method by which costs 
are to be apportioned, and (4) acknowledgement that all shared 
transmitter use must be subject to the licensee's control. These 
agreements must be kept as part of the station records.
    (e) If the land station which is being shared is interconnected with 
the public switched telephone network, the provisions of Sec. 90.477 et 
seq. apply.
    (f) Above 800 MHz, shared use on a for-profit private carrier basis 
is permitted only by SMR, Private Carrier Paging, and LMS licensees. See 
subparts M, P, and S of this part.
    (g) The provisions of this section do not apply to licensees 
authorized to provide commercial mobile radio service under this part.
[ 48 FR 26620 , June 9, 1983, as amended at  51 FR 36014 , Oct. 8, 1986;  53 FR 12156 , Apr. 13, 1988;  54 FR 4030 , Jan. 27, 1989;  54 FR 38681 , Sept. 
20, 1989;  57 FR 48739 , Oct. 28, 1992;  59 FR 59965 , Nov. 21, 1994;  60 FR 15252 , Mar. 23, 1995]