We used to get hits on UV treatment plant with plc gear, switches, cameras and radios next to it. I installed an air terminal five feet above tower on 1 1/2 inch emt secured to Tower top but isolated by thick rubber...then ran 6 gauge ground directly to 3/4 inch 10 ft rod....tower has its own rod....Franklin grounding principle...no issues for over a year and we have had allot of lightning....consider floating your mounts from tower as well...
Jaime Solorza On Oct 25, 2015 10:51 AM, "Craig House" <cr...@totalhighspeed.net> wrote: > Gino We used to loose a lot of equipment as well. Daniel White gave me > some advice 10 years ago and we started immediately noticing a difference. > The suggestions was good shielded cable with a ground strap every 75' > minimum. Since then we have changed a lot but still lose very little. The > main thing we have changed is to keep our ethernet cables as absolutely > short as possible. I mount a box on the tower and run AC power up to it. > Install a Surge strip for the Netonix switch at the top of the tower and > try to keep all cable runs to less than 30'. I use fiber up the tower > every chance I get and since the Netonix switches have SFP built in it is > really not much extra cost for the fiber. > > I have come to the conclusion that we will always lose some things but it > has helped so much. We dont usually do anything special to "ground" our > stuff unless the tower has a propensity to attract lightning. Not sure if > this helps you but it has worked for us > > Craig > > > ------------------------------ > *From: *"Gino Villarini" <ginovi...@gmail.com> > *To: *af@afmug.com > *Sent: *Sunday, October 25, 2015 11:31:05 AM > *Subject: *Re: [AFMUG] Site Grounding - what we are doing wrong? > > Tushar, when you say ground block you mean a surge suppressor? > > On Sunday, October 25, 2015, Tushar Patel <tpa...@ecpi.com> wrote: > >> We used to loose lot of radios too. >> >> We do following now and it seems to help (loosing less). >> >> At top on the tower: >> We put all AP on stand off (MTOW-p), then we have grounding block mounted >> on the stand off at same level as AP, then less then 2 feet of cable going >> from grounding block to AP. All shielded cable and grounded to tower. >> >> We have lost few ground block on tower but it seems to save radios. >> >> Some ideas came from orthogone system product and their grounding guide >> lines. >> >> At the bottom >> >> Shielded cable going to grounding block and then to equipments. >> >> Tushar >> >> >> > On Oct 25, 2015, at 10:57 AM, Gino Villarini <ginovi...@gmail.com >> <http://JAVASCRIPT-BLOCKED;>> wrote: >> > >> > So we are loosing radios left and right due to lightning! >> > >> > Typical site setup: >> > >> > Radios on tower grounded to tower >> > >> > Shielded cable >> > >> > Shielded patch panel - grounded >> > >> > Regular cat5 jumpers >> > >> > Wbmfg SS - grounded >> > >> > Regular cat5 jumpers >> > >> > Poe device >> > >> > What's wrong? >> > >> > >> > >
