From: johnsonsatake@gmail.com   
      
    Jeff Layman wrote:   
   > > I have a 6-months old Fantasia ceiling fan (mains powered, with 6-speed   
   > > reversible dc motor) which is causing a lot of interference on MW.   
   > FM   
      
   you can try and put a AC line filter as close to the device as you can ,  3   
   wire AC feeding is better ....   
   DC motor may need bypass caps , which might be a problem for the 6-speed    
   driver....   
   The clamp on fairrite  or a core should be on everything in a ham home, and   
   all overhead AC drop lines IMO.   
   the type 75 cores are only about $1 and go after all the noise below 1mhz (   
   that's is where most of it comes from )   
   you may be able to use the AC line filters on DC if amp rating is enough (   
   leave a little margin here... )   
   tips from a solar-powered ham radio operator.   
   pics on my QRZ site Ko6kL   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)