47 CFR § 73.203 - Availability of channels.
(a) Except as provided for in paragraph (b) of this section and § 1.401(d) of this chapter and 73.3573(a)(1), applications may be filed to construct new FM broadcast stations only at the communities and on the channels contained in the Table of Allotments (§ 73.202(b)).
(b) Applications filed on a first come, first served basis for the minor modification of an existing FM broadcast station may propose any change in channel and/or class and/or community not defined as major in § 73.3573(a). Applications for a change in community of license must comply with the requirements set forth in § 73.3573(g).
This section is limited to non-reserved band changes in channel and/or class and/or community. Applications requesting such changes must meet either the minimum spacing requirements of § 73.207 at the site specified in the application, without resort to the provisions of the Commission's rules permitting short spaced stations as set forth in §§ 73.213 through 73.215, or demonstrate by a separate exhibit attached to the application the existence of a suitable allotment site that fully complies with §§ 73.207 and 73.315 without resort to §§ 73.213 through 73.215.
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