NEC requires minimum 6 ft. between ground electrodes..for better
performance minimum 2X electrode length (e.g. 16 ft for 8 ft rods).
73
Don
WB2BEZ
In a message dated 1/15/2015 4:46:00 P.M. Eastern Standard Time,
eedwards@oppd.com writes:
Excellent point Jim. All services' grounds (AC, telephone, television,
internet and ham shack cable entry point & ham tower) must be bonded to a
single-point ground system. There's no limit on number of ground rods as long
as they're bonded (i.e. tied to the same grounding system). 8 foot ground
rods need to be within 16 ft of each other, but can be closer if needed to
shorten cable run to each service ground connection.
Couple more good references for grounding and bonding standards from
Motorola & Harris:
http://www.radioandtrunking.com/downloads/motorola/R56_2005_manual.pdf
http://www.repeater-builder.com/ge/lbi-library/t4618r3a.pdf
73, de ed -K0iL
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