[Code of Federal Regulations] [Title 47, Volume 5] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR101.117] [Page 641] TITLE 47--TELECOMMUNICATION COMMISSION (CONTINUED) PART 101--FIXED MICROWAVE SERVICES--Table of Contents Subpart C--Technical Standards Sec. 101.117 Antenna polarization. Except as set forth herein, stations operating in the radio services included in this part are not limited as to the type of polarization of the radiated signal, provided, however, that in the event interference in excess of permissible levels is caused to the operation of other stations the Commission may, after notice and opportunity for hearing, order the licensee to change the polarization of the radiated signal. No change in polarization may be made without prior authorization from the Commission. Unless otherwise allowed, only linear polarization (horizontal or vertical) shall be used.