This happens right in my house. Since installing lots of extra ethernet wiring, my ability to scan in the 2m and 150mhz areas has definitely been hindered by all the off noisy channels. It happened because I haven't bothered to use shielded cat5 at home.
At tower sites, we use shielded only. We have many situations where we are colocated with VHF and HAM gear and have no problems because we use shielded cables and metal equipment enclosures. We have one site with probably 25 ethernet devices adjacent to a VHF AIS receiver that is picking things up distant ships at sensitivities of -115dbm or so. On Sun, Mar 29, 2009 at 11:56:12PM -0400, Kurt Fankhauser wrote: > Has anyone else here ever been co-located on a tower with a HAM radio > (144-148mhz) VHF repeater or perhaps even a commercial system in the 150mhz > band and gotten complaints that your Ethernet cable is causing them > interference on their repeater? We are trying to locate the source of noise > on an amateur radio repeater system locally and last time I went up on grain > leg there was a whole lot of Ethernet cabling strung everywhere and I've > read some links such as these. http://www.hamuniverse.com/linksys.html that > apparently some brands of equipment give out much more spurious emissions > than others. > > > > Also how did you work with the radio people to solve it? Seems to only be > apparent in the VHF band. > > > Kurt Fankhauser > WAVELINC > P.O. Box 126 > Bucyrus, OH 44820 > 419-562-6405 > www.wavelinc.com -- /* Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL KB1IOJ | Broadband Internet Access, Dialup, and Hosting http://f64.nu/ | for Midcoast Maine http://www.midcoast.com/ */ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
