Bingo! That's what you need Sent from my iPhone
> On Jun 3, 2015, at 9:08 PM, Steve Utick <[email protected]> wrote: > > So, something like this then? > https://www.tessco.com/products/displayProductInfo.do?sku=445755 > > > >> On Wed, Jun 3, 2015 at 6:24 PM, Tyson Burris @ Internet Comm. Inc >> <[email protected]> wrote: >> Simple: buy cat 5 grounding kits for >> Shielded cable. Use them at top, middle and bottom. No more no less. >> Doesn't involve cutting cable just connect into shield and water proof like >> hell. >> >> Sent from my iPhone >> >>> On Jun 3, 2015, at 6:35 PM, Ken Hohhof <[email protected]> wrote: >>> >>> I would NOT put Cat5 surge protectors every 50-75 feet, you will likely get >>> Ethernet errors and/or negotiation problems. At most there should be one >>> at each end. >>> >>> You are probably thinking of coax, and even so I suspect those are shield >>> grounds, not actual surge protectors. >>> >>> I do agree with not making your antennas the highest thing on the tower if >>> you can help it. >>> >>> If you must use an omni antenna located at the top, I have had some success >>> with a COAX surge protector between the radio and the antenna. Polyphaser >>> makes some DC blocking types that work OK and aren’t too expensive. If >>> lightning hits, the omni is still probably toast, but it might save the >>> radio. >>> >>> From: Edward Brooks >>> Sent: Wednesday, June 03, 2015 5:24 PM >>> To: [email protected] >>> Subject: [AFMUG] Static & Nearby Lightning Issues >>> >>> Here goes... >>> We have a new 118' Super Titan Max tower that has been grounded per >>> manufacturers recommendations. Each leg is physically bonded (not >>> exothermically) to a 10' ground rod, all ground rods are then connected to >>> each other in a ring. The equipment cabinet is bonded to an 8' ground rod >>> and tied into the meter base grounding as well. The two ground rings are >>> then bonded to each other in 2 separate places. >>> With that said our issue has not been with the grounding, but with the >>> dissipation of static at the height of the antennas. We currently have had >>> the worst problems with the 3 Cyclone 2.4 antennas which are currently >>> located on masts at the top of the tower. We have also had issues with a >>> couple of the 5.7 Cyclones located below the top of the tower, but not as >>> frequently. The center-line of the 2.4 APs is 120' AGL, the height of the >>> tower is 118' AGL. We currently have WB-GigE-APC surge arrestors located >>> in the cabinet which is located 10 ft from the base of the tower. >>> After doing some research through various Cambium manuals and the >>> Motorola R56 manual, I have some idea what our issue is, but would like to >>> bounce those ideas off the community. My thought is that we neglected to >>> put surge arrestors at 50' to 75' intervals (as recommended by the Motorola >>> R56 manual) and 1 at the top for use in thunderstorm areas. Also we may >>> need to lower the APs to a minimum of 2ft below the top of the tower (per >>> the Cambium manuals for various antenna types). >>> Any suggestions or comments would be appreciated. What have you done >>> to mitigate this problem? Etc... >>> >>> Thanks, >>> -Ed >>> -- >>> Edward Brooks >>> Outside Plant Manager >>> The Montana Internet Corporation >>> 406-443-3347 X506 >>> >>> >>> >>> This email has been checked for viruses by Avast antivirus software. >>> www.avast.com >>> >
