Sec. 25.214  Technical requirements for space stations in the satellite 
          digital audio radio service.

    (a) Definitions.
    (1) Allocated bandwidth. The term ``allocated bandwidth'' refers to 
the entry in the Table of Frequency Allocations of a given frequency 
band for the purpose of its use by one or more terrestrial or space 
radiocommunication services under specified conditions. This term shall 
be applied to the 2310-2360 MHz band for satellite DARS.
    (2) Frequency Assignment. The term ``frequency assignment'' refers 
to the authorization given by the Commission for a radio station to use 
a radio frequency or radio frequency channel under specified conditions. 
This term shall be applied to the two frequency bands (A) 2320.0-2332.5 
MHz and (B) 2332.5-2340.0 MHz for satellite DARS.
    (b) Each system authorized under this section will be conditioned 
upon construction, launch and operation milestones as outlined in 
Sec. 25.144(b). The failure to meet any of the milestones contained in 
an authorization will result in its cancellation, unless such failure is 
due to circumstances beyond the licensee's control or unless otherwise 
determined by the Commission upon proper showing by the licensee in any 
particular case.
    (c) Frequency assignments will be made for each satellite DARS 
system as follows:
    (1) Exclusive satellite DARS licenses are limited to the 2320-2345 
MHz band segment of the allocated bandwidth for satellite DARS;
    (2) Two, 12.5 MHz frequency assignments are available for satellite 
DARS: 2320.0-2332.5 MHz and 2332.5-2345.0 MHz;
    (3) Satellite DARS licensees may reduce their assigned bandwidth 
occupancy to provide telemetry beacons in their exclusive frequency 
assignments;
    (4) Each licensee may employ cross polarization within its exclusive 
frequency assignment and/or may employ cross polarized transmissions in 
frequency assignments of other satellite DARS licensees under mutual 
agreement with those licensees. Licensees who come to mutual agreement 
to use cross-polarized transmissions shall apply to the Commission for 
approval of the agreement before coordination is initiated with other 
administrations by the licensee of the exclusive frequency assignment; 
and
    (5) Feeder uplink networks are permitted in the following Fixed-
Satellite Service frequency bands: 7025-7075 MHz and 6725-7025 MHz 
(101 deg. W.L. orbital location only).
[ 62 FR 11106 , Mar. 11, 1997]

Secs. 25.215-25.249  [Reserved]