Re: [TCML] Is my 10" Tesla Coil Illegal ?

[mddeming@xxxxxxx]

Hi Gary,

Sounds like you have a lot of RF energy coupling into your distribution system.

1) Do you have any hash filters on your lines going to your control cabinet? If not, definitely install some.

2) Is your RF ground short and solidly connected at both ends? A long or poorly connected  RF ground line can act as an antenna.

3) Are there any power lines or phone lines running across or very near to your back yard? This may require moving the coil if you are coupling to them..


A battery-operated radio will tell you about how far you're radiating. When turned on, the LCD of a hand-held cheap calculator will go crazy in the magnetic field of a coil. If radiating is the problem, you may get an FCC visit. If you are linking back through the power lines you can be in trouble under various "nuisance ordinances". If someone claims that you are "knowingly interfering with security systems",  then you can be in deep stuff under the anti-terrorist and conspiracy legislation.

Matt D.


-----Original Message-----
From: gary350@xxxxxxxxxxxxx
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, Jan 19, 2010 12:56 pm
Subject: [TCML] Is my 10" Tesla Coil Illegal ?


This time of the year when the air is cold and the humidity is extremely low 
tatic electricity is very high I get shocked every time I get IN or OUT of my 
UV, take off my jacket or put on my jacket.  If I move the blankets in bed at 
ight I see all kinds of sparks.  It is perfect for firing up my Tesla Coil and 
etting some very long sparks.   But I worry that this might be illegal.  My 10" 
C makes 12 foot arcs I can make a 27 ft circle of arcs and sparks in the back 
ard with the 3 ft top load.  It makes every motion detector light and every 
ecurity alarm system go off in a 4 block radius around my house.  After dark I 
an see motion detectors lights going on/off, on/off, on/off, on/off, on/off, in 
ll directions as far as I can see.  My automatic garage door and all the 
eighbors garage doors are freaked out going up/down, up/down, up/down, up/down, 
p/down, up/down, over and over.  I can hear security alarms in all directions.  
 road my bicycle through the neighbor hood and I can find alarm systems going 
ff 4 blocks away in several directions from my house.  It totally distroys TV 
nd it makes no difference if you have cable, satallite, or antenna TV is 
otally wiped out all reception for several blocks.  I don't fire up my 10" TC 
ery often anymore I worry it might be illegal.  

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