§  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
   § 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
   DAR§  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�° W.L. orbital location only).

   [ 62 FR 11106 , Mar. 11, 1997]