HP 522a (AP), 743a (AP), 503a (AP), 513a (AP) manual Lightning Protection, Power Lines

proper electrical grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna-discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode.

Lightning Protection

For added protection of any Hewlett-Packard product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug the product from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product from lightning and power line surges.

Antenna Grounding

1Electric Service Equipment

3Ground Clamps

4Grounding Conductors (NEC Section 810-21)

5Antenna Discharge Unit (NEC Section 810-20)

6Ground Clamp

7Antenna Lead in Wire

Power Lines

An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits.

Warning: When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them could be fatal.