[BC] More thoughts about AM transmitter lightning

[tg at btsg.com]

I have not followed this thread all the way through, but thought I would mention that Nautel has a
"Site Preparation Guide" that gives you formulas, etc., for calculating ball gap based on several
factors, as well as a lot of useful information on setting up a site for "survival". Worthwhile
reading IMHO.

Tommy Gray

----- Original Message -----
From: cld at admin.umass.edu
To: broadcast at radiolists.net
Sent: Thu, 22 May 2008 09:46:29 -0400
Subject: [BC] More thoughts about AM transmitter lightning

I don't know if this has been mentioned, but I understand that it is important
that the balls not be painted. Check to see if some tower company painted them
in the past. Please feel free to correct me if this isn't a concern.

Chuck Dube


Message: 22
Date: Wed, 21 May 2008 20:20:30 -0700
From: Mike McCarthy <Towers at mre.com>
Subject: Re: [BC] More thoughts about AM transmitter lightning
        sensitivity issue

I concur with checking the ball gaps and setting them to the point
where they don't arc with peak modulation, plus 1/8".  If the towers
are low impedance, you can get the balls to within 1/8" and still run
3+ KW.  That should calm down the trips significantly in all but the
most intense part of the storm.


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