RE: Tesla Coil RF interference

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Paul Marshall" <klugmann-at-hotmail-dot-com> 

I noticed this with small out of tune coils. Actually, the first coil I 
ever built was on a 1 1/2 inch form. At low power 450 watts, It would light 
a neon tube at a distance of 30 feet. Metal objects that were not grounded 
had induced voltages as high as 3kV. My neighbors complained about their TV 
just looking like a blizzard. On the other hand my 6.5" coil running at 10 
kW wouldn't do that and I was getting 8' streamers. I think it has a lot to 
do with frequency. You seem to have just hit the right one.



Paul S. Marshall





>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Tesla Coil RF interference
>Date: Mon, 17 May 2004 23:03:04 -0600
>
>Original poster: "Gary Weaver" <gary350-at-earthlink-dot-net>
>
>I have noticed when I fire up my 10" coil it sets off motion detector
>light, security alarm systems, causes TV interference for 5 blocks it all
>directions of my house.   The neighbors security lights flash on and off.
>I can hear several alarm systems going off all over the neighbor hood.   I
>took my portable 4" TC to work and fired it up and the telephone system was
>static so loud it was like putting my ear up to the spark gap.  Even the PA
>system sounds like the spark gap amplified to 50 watts.  I don't own a cell
>phone so I was wondering what effect a TC has on a cell phone?   Does it
>have any effect on a cell phone at 20 ft, 50 ft, 100 ft???
>
>Gary Weaver
>