Lee- they are a must with proper ground. They will not protect from direct strike (nothing will) but will serve well when lightning is in the area to bleed off high charges that would otherwise cause damage. There should be no more than ½ to 1 dB of loss (as with any RF connector). Also- remember the fiber trick: work a jumper of optical fiber in the link between the bridge and switch- if a bad surge hits, the fiber will melt and is thus acting as a fuse to protect downstream electronics. But even with this step- a true direct strike can still do damage deep into the network. Lee H. Badman Wireless/Network Engineer Information Technology and Services Syracuse University 315 443-3003 ________________________________
From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[EMAIL PROTECTED] On Behalf Of Lee Weers Sent: Wednesday, September 03, 2008 2:59 PM To: [email protected] Subject: [WIRELESS-LAN] Lightening surge arrestor's on outdoor antennas I was curious to know how many of you are using lightening surge arrestors that go between the ap and external antenna? Do they work and provide protection from damaging the ap, or do they induce a lot of db loss? Thank you, Lee Weers Assistant Director for Network Services Central College IT Services (641) 628-7675 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
