1.1 These requirements cover antenna rotators intended for household and commercial use on supply circuits in accordance with the National Electrical Code, NFPA 70.
1.2 An antenna rotator generally consists of:
Some antenna rotating units may control antenna elevation separately or in addition to azimuth. In some cases, the drive unit may be located indoors.a) A mast-mounted (generally outdoors), motorized drive unit that rotates the antenna to the desired receiving azimuth,
b) An indoor-located (usually near television- or radio-receiving equipment) user-operated control unit that delivers operating power and direction signals to the drive unit, and,
c) A length of multiple-conductor Class-2 circuit cable to electrically interconnect the drive unit and the control unit.
1.3 The power used to drive the motor of an antenna rotator is derived from a circuit complying with Class 2 limitations in accordance with Article 725 of the National Electrical Code, ANSI/NFPA 70.
1.4 These requirements do not cover systems that use a stationary antenna and change or rotate the receiving pattern by electronic or switching means. Such systems are covered by the Standard for Audio-Video Products and Accessories, UL 1492.
UL 150 references these Standards:
44 *
62 *
83 *
94 *
248-1 *
248-14 *
310 *
486A-486B *
498 *
746A *
746C *
746D *
796 *
817 *
873 *
1054 *
1077 *
1411 *
1412 *
1414 *
1416 *
1417 *
1492 *
4248-1 *
60691 *
. Table of Contents for UL 150.