§ 95.408 (CB Rule 8) How high may I put my antenna?
top (a)
Antenna means the radiating system (for transmitting,
receiving or both) and the structure holding it up (tower, pole or mast). It also means everything else attached to the radiating system and the structure.
(b) If your antenna is mounted on a hand-held portable unit, none of the following limitations apply.
(c) If your antenna is installed at a fixed location, it (whether receiving, transmitting or both) must comply with either one of the following:
(1) The highest point must not be more than 6.10 meters (20 feet) higher than the highest point of the building or tree on which it is mounted; or
(2) The highest point must not be more than 18.3 meters (60 feet) above the ground.