Chuck is exactly correct. Before I retired I owned multiple towers and we used PolyPhaser and copper strapping at all the sites. I can send you pics of my ham tower (Rohn 55) with the PolyPhaser entrance. It's grounded using 6" copper strap and then 3" strap going to the operating positions. I've got about 12 different coaxes coming in with Polyphasers on them on the entrance panel....including my Sat dish, TV antenna, repeater, HF, VHF, UHF antennas.
Gregg R. Lengling, W9DHI, Retired Administrator http://www.milwaukeehdtv.org K2/100 S#3075 KX1 S# 57 Politics is the art of appearing candid and completely open, while concealing as much as possible. -States: The Bene Gesserit View -----Original Message----- From: Chuck Kelsey [mailto:[EMAIL PROTECTED] Sent: Friday, April 09, 2004 10:19 AM To: [email protected] Subject: Re: [Repeater-Builder] Lightning Protection According to PolyPhaser, the best grounding material is copper strap, then solid copper (or copper clad) wire. They don't recommend using stranded wire due to increasing inductance as the strands start to weather and corrode between each conductor. Chuck WB2EDV ----- Original Message ----- From: "KD5SFA" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, April 09, 2004 9:51 AM Subject: RE: [Repeater-Builder] Lightning Protection > Wouldn't a stranded copper wire do better in the event of a strike ? > If I recall correctly, lightning has a fairly large AC component and likes to travel on the surface > of the wire (Skin effect). Thus by having stranded wire, it could carry a larger current to the > ground because you would have more surface area for it to run along. > > A number of people I know run 2/0 and 4/0 stranded copper from their tower legs to their > grounding systems for that reason. > > 73, > Jon > KD5SFA > > Yahoo! Groups Links 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/
