Re: Believe it or not
What you are talking about is the Part 15 limits. The technical limit is a
certain field strength at a certain distance at a certain frequency, etc.
There is also a "design guideline" kind of limit (100 mW with an antenna
shorter than a certain size, etc.) which has the practical effect of
automatically complying with the technical limit, because with the specified
equipment, there is no physical way to exceed the limit.
For those who are really interested, ANSI C63.4 is the spec for how to
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Wednesday, November 10, 1999 11:35 AM
Subject: Re: Believe it or not
>Original Poster: Stan Darling III <sdarling-at-columbus.rr-dot-com>
>John, I was specifically interested in the power limits, if any. More to
>the point, is it in violation if the interference doesn't go outside your
>property? Don't most bands have limitations on power? Like those little
>transmitter kits at radio shack that are legal because they don't have
>enough power to transmit outside a 200' radius or whatever.....
>So do you think they'd get upset if I set up a huge coil right outside
>local branch? ;P
>Tesla List wrote:
>> Original Poster: Neon John <johngd-at-bellsouth-dot-net>
>> Tesla List wrote:
>> > Original Poster: Stan <sdarling-at-columbus.rr-dot-com>
>> > I have seen a couple references to FCC violations in this thread. Can
>> > anyone cite the actual FCC rule(s) or regulation(s) that coiling
>> > violates? I imagine it has something to do with unlicensed
>> > transmission, but I would like to know the specifics.
>> Oh, they could throw the whole book at you if they wanted to. The
>> Tesla coil is the veritable bull in the RF china shop. Spark
>> transmitters (what TCs really are) are banned by name. Then there's
>> unlicensed emissions, unauthorized emissions on bands authorized for
>> specific services, interference with emergency, aviation and other
>> public services, and exposure of the public to excess RF fields,
>> just to name a few. Then there's the Part 15 stuff about unlicensed
>> transmitters not interfering with other devices (not just
>> communications devices.) This is an agency you don't want to
>> attract the attention of with your TC.
>> John De Armond
>> Neon John's Custom Neon
>> Cleveland, TN
>> "Bendin' Glass 'n Passin' Gas"