§  90.135   Modification of license.

   (a) In addition to those changes listed in § 1.929(k) of this chapter
   and in accordance with § 1.947 of this chapter the following
   modifications may be made to an existing authorization without prior
   Commission approval:

   (1) Change in the number and location of station control points or of
   control stations operating below 470 or above 800 MHz meeting the
   requirements of § 90.119(b).

   (2) Change in the number of mobile units operated by Radiolocation
   Service licensees.

   (b) Unless specifically exempted in § 90.175, licensees must submit a
   Form 601 application for modification to the applicable frequency
   coordinator for any change listed in § 1.929(c)(4) of this chapter.

   [ 65 FR 60875 , Oct. 13, 2000]