We did something similar on a tower where we had a PacWireless SO24-xx antenna at the top. Ran a piece of 10AWG up so it stuck up about 1 foot above the antenna. Never took a lightning hit. Can't say so much for the wind, though. Blew the cover off one day.
jp wrote: > We've added a 2/0 (I think) insulated copper wire from the tower top rod > to the grounding at the bottom. This has helped a great deal at the two > towers we've done it at. The current will go mostly through this instead > of mostly on the tower framework (or your shielding). It was about > $3/foot, and a similar amount for installation labor. > > The cell phone guys usually also run their own heavy duty ground down > their cable management ladder next to their coaxes, probably for similar > purposes. > > We can't do this everywhere for various reasons, and we've lost a lot of > money on lighting damage in July. > > On Wed, Aug 05, 2009 at 10:31:42AM -0400, Chuck Hogg wrote: > >> Has anyone been able to withstand a direct lightning strike? We had a >> tower get hit last night, and some of our equipment lost Ethernet ports >> (RB/433AH), and we lost 3 canopy APs, but that is all (considering what >> is all up there only 2/3rds was blown). Our Trango AP survived and a >> RB/433AH survived. Even Nextel had their guys out there, but they just >> had to reset alarms it appears as nothing was "fried" on their end. I >> wish I had to just reset alarms. >> >> >> >> So tell me, what do you do ? I'm tired of dumping a few grand during big >> lightning storms. >> >> >> >> I do the basics, Ethernet surge suppression up top and on the bottom, >> Polyphasers, ground out to the ground bars, ground out the cat5 cable, >> and no omni's. >> >> >> >> Regards, >> >> Chuck Hogg >> >> Shelby Broadband >> 502-722-9292 >> [email protected] >> >> http://www.shelbybb.com >> >> >> >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: [email protected] >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.392 / Virus Database: 270.13.44/2283 - Release Date: 08/05/09 > 05:57:00 > > -- Scott Reed Sr. Systems Engineer GAB Midwest 1-800-363-1544 x4000 Cell: 260-273-7239 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
