Re: [Repeater-Builder] lightning arrestors

[Dick]

Steve:   I like Polyphaser lightning diverters (they don't really "arrest" it, they just divert it). I use one at the antenna and ground it sewcurely to the tower (assuming the tower is well grounded), and one at the point where the coax goes into the copper "window" in the side of the building.  The copper plate is, of course, well grounded.   Also, put a 360-degree loop in your coax where it's horizontal between the tower and the building.  This provides a higher impedance point that helps attenuate the lightning energy.  Many AM broadcast stations use this "lightning loop" technique.   FWIW, I spent a lot of my EE years at the Lockheed Skunk Works designing lightning protection technology for military aircraft.   73,   Dick W1NMZ   ----- Original Message ----- From: Stephen Rice To: Repeater-Builder@yahoogroups.com Sent: 02 March, 2006 06:51 Subject: [Repeater-Builder] lightning arrestors Hi all, I had a question that I believe some of you can answer! I have a repeater with an antenna only about 20 feet off the ground here in Florida and am now looking for a budget lightning arrester. I have seen so many different ads I figured I would go to the horses mouth and ask you all if you have to do it on a budget what did you use? Did you mount the arrestor outside with an appropriate ground or inside? By the way the antenna is low because of the community regs. and it does cover the community for GMRS emergency work at that height. Thanks Steve N4YZA   Yahoo! Groups Links <*> To visit your group on the web, go to:     http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to:     [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to:     http://docs.yahoo.com/info/terms/   YAHOO! GROUPS LINKS  Visit your group "Repeater-Builder" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.