[Hallicrafters] Re: Dipole antenna

[Vern Weiss]

The coiling of coax for many years has been used by commercial installations
for lightning protection. This little bit of inductance provides an
itsy-bitsy amount of resistance to the path of high voltage high current
lightning. Experts even suggest as little as a single turn coil in a coax
line helps. What the commercial stations do, though, is NOT put the coil at
the feedpoint. The coil (or "drip loop" as it is sometimes known) should be
positioned near where the coax enters the station with the coax shield
grounded prior to that point. The theory is that the resistive inductance to
lightning is sufficient to discourage it from continuing into the station
and, instead, it takes the direct path to the ground provided by the
shield-to-ground lead.

Vern Weiss W9STB
All CW in the Northwoods

----- Original Message ----- 
From: "John Webb" <w5jmw at cableone.net>
To: <hallicrafters at mailman.qth.net>; "peter markavage" <manualman at juno.com>
Sent: Tuesday, February 22, 2005 7:29 PM
Subject: Re: [Hallicrafters] Re: Dipole antenna


> and a little added advantage,a balun does provide a direct dc path to
ground
> for lightning.NOT,that it would help in a direct strike.But is a path to
> ground for static build-up..john