Jaime. We have an FM sight giving us trouble. We have a spool of this sitting here to be deployed I will report back after we try it.
From: AF [mailto:[email protected]] On Behalf Of Jaime Solorza Sent: Friday, July 20, 2018 10:01 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Ethernet problems next to FM Antenna Have tried Shireen DC-2020? Dual shields...we have used it with success in SCADA application with high EMI and RFI levels....it's pricey but worked for us. Jaime Solorza On Fri, Jul 20, 2018, 8:35 PM Nate Burke <[email protected]> wrote: I'm curious why Liquidtight works when the foil shield on the Cat5 doesn't. Extra distance from the twists? Heavier gauge steel? Do you need to make sure the liquid tight is grounded, or just the fact that it's around the cat5 is enough? On 7/20/2018 7:04 PM, Chuck McCown wrote: Yeah, that too. Some folks could not make it work without the liquidtight. From: Sean Heskett Sent: Friday, July 20, 2018 5:38 PM To: AnimalFarm Microwave Users Group Subject: Re: [AFMUG] Ethernet problems next to FM Antenna Put all Ethernet cables inside shielded liquidtight flex conduit. You can buy it st an electrical supply shop. Be sure to run the conduit to a metal box at the top and then breakout to each ap in smaller shielded conduit. -sean On Fri, Jul 20, 2018 at 10:35 AM Nate Burke <[email protected]> wrote: It looks like the old archives aren't back online yet, so I couldn't go searching through there for ideas. I have a site where we have been co-locating with a 800w FM Transmitter for years. We've always had Ethernet problems at the site since the FM went in. Everything is shielded cat5 (Belden 7919). It is at a grain elevator, our equipment is on one corner of the platform, and the FM Transmitter is on the other corner. We are horizontally separated by about 10 feet. There is no way to get vertical separation. I used to run all the cables down to the bottom of the leg, about 100'. In an effort to make the Ethernet work better, I installed an Edgepoint fed with Fiber at the top, so cable lengths between the radios and the Edgepoint are now 5'-10'. With the FM Transmitter turned off, everything runs perfectly. When the FM is turned on, most equipment drops to 100mb, and some goes down to 10mb. On the most problematic equipment, I have installed the 4 pair FM Filters from Sandman http://www.sandman.com/rf.html within 12" of both the switch and the radio. It made no change. What FM Elimination tricks have I forgotten to try? I was really expecting the short cable lengths to solve the problem. -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com _____ -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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