The R56 Manual is an excellent guide to planning and installing a two-way
radio site, although its primary purpose is for planning cellular and PCS
sites. The sections on permitting and getting along with neighbors is very
useful. The table of contents can be viewed here:
www.repeater-builder.com/pdf/r56-manual-toc.pdf
One area that I object to is the section on electrical system grounding, and
I have filed a formal complaint with the authors to have it changed to
comply with the National Electrical Code, NFPA 70. The R56 Manual proposes
that the equipment grounding conductor be run to a single-point ground
plate over a different path than that followed by the hot and neutral
conductors. Unfortunately, that practice clearly violates Article 250 of
the NEC that requires the equipment grounding conductor (the green or bare
wire) to run in the same raceway or cable that contains the hot and neutral
wires.
As an electrical inspector and a designer of radio systems, I can see many
different views of the proper way to ground sensitive electronic
equipment. I also see some really creative but dangerous methods of
floating the ground on equipment, supposedly to prevent noise. More often
than not, these methods increase noise and make the equipment much more
vulnerable to damage from lightning strikes. The bottom line is that the
insurance carrier may not cover any losses if an investigation reveals that
the electrical grounding system was not in full compliance with the NEC.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of radiomog
Sent: Tuesday, January 23, 2007 12:06 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] R56
Just wondering how many of you know about R56 and actually try to
follow it as a guide?
we've had a run-in with a motorola ss owner who wasn't too
knowledgeable. Well, maybe he is, but the work he does doesn't even
come close to good business practices.
