To: [email protected]
From: [EMAIL PROTECTED]
Date: Thu, 27 Sep 2007 20:21:21 -0700
Subject: RE: [Repeater-Builder] AC Line Conditioner
Don,
Thanks to some advertising hype being spread by manufacturers of so-called
"surge suppressors", one might think that some kind of a surge suppressor is a
"must-have" accessory. Not! A properly-designed electrical distribution
system does not need such pathetically inadequate gimmicks. As a power
engineer for Boeing, I see many instances of our IT people being pressured to
install surge suppressors where they are completely unnecessary.
It is the responsibility of the utility to provide an AC power source that is
appropriately protected with fuses and surge arrestors at the distribution
level- usually 12kV or 22kV. Once inside the radio shack, each station should
have a properly-grounded 120 VAC feed, along with appropriate protection of the
antenna feedline. The highest priority should be to ensure that every
conductor that enters each radio equipment cabinet has the *SAME* ground
reference for protection.
If you are converting the incoming AC to nominal 14 VDC floating on a battery,
you should be okay.
73, Eric Lemmon WB6FLY As an adjunct we recently suffered a huge storm strike
very close to the house (5 metres destroying a tree) , now I really don't know
if the Belkin protector boards really worked or it was luck but most of the
light bulbs expired but nothing connected to the Belkin boards did and some of
the gear which was not died a bad death , comments ? I guess the power supply
around here is reasonable then :)
-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of
Don KA9QJG
Sent: Wednesday, September 26, 2007 11:55 PM
To: [email protected]
Subject: [Repeater-Builder] AC Line Conditioner
I Would like some input on What some are using for a AC Line Conditioner not a
UPS , For a Repeater site that may not have the Cleanest AC Coming in . I
do have a 50 Amp Astron with the Battery Backup on a Battery. I know that
should Clean most things up, But I am a little concerned about what’s coming
in. on the AC, I also have Great grounding and a Poly Phaser on the Antenna
Side.
Thanks Don
KA9QJG
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