47 C.F.R. § 96.45
Additional requirements for category B CBSDs
(a) Category B CBSDs must be professionally installed.
(b) In the 3550-3650 MHz band, Category B CBSDs must be authorized consistent with information received from an ESC, as described in § 96.15.
(c) Category B CBSDs are limited to outdoor operations.
(d) When registering with an SAS, Category B CBSDs must transmit all information required under § 96.39 plus the following additional information: antenna gain, beamwidth, azimuth, downtilt angle, and antenna height above ground level.