McIntosh MX136 Owner's Manual page 3

Safety Instructions
Outdoor Antenna Grounding
If an outside antenna or cable system is connected to
the product, be sure the antenna or cable system is
grounded so as to provide some protection against
voltage surges and built-up static charge. Article 810
of the National Electrical Code, ANSI/NFPA 70, pro-
vides information with reguards to proper grounding
of the mast and supporting structure, grounding of the
lead-in wire to an antenna discharge unit, and size of
ground conductors, location of antenna-discharge unit,
connection to ground electrodes and requirements for
the grounding electrode.
Example of antenna grounding as per
National Electrical Code, ANSI/NFPA 70
3