UL 452-2006《天线发射装置》

1.1 These requirements cover antenna-discharge units for radio and television receiving equipment and
amateur radio-transmitting and -receiving equipment, to be employed in accordance with the National
Electrical Code, NFPA 70.
1.2 An antenna-discharge unit – hereinafter referred to as a discharge unit – as covered by these requirements consists of a gap, a fixed resistance or other discharge element, or a combination of such features, connected between each antenna lead-in terminal and a grounding terminal.