We ran into this once. Solution: upgrade to shielded Ethernet cable with a 
drain wire. Then attach the drain wire to ground.
 

> -----Original Message----- 
> From: Kurt Fankhauser <[email protected]> 
> To: 'WISPA General List' <[email protected]> 
> Date: 03/29/09 23:56 
> Subject: [WISPA] harmful RFI from ethernet to HAM RADIO? 
> 
> 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
> 
> 
> 
> 
> 
> 
> 
> 
> 
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