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[TCML] RF Police was Re: Tesla Digest, Vol 141, Issue 4
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[TCML] RF Police was Re: Tesla Digest, Vol 141, Issue 4
To : tesla@xxxxxxxxxx Subject : [TCML] RF Police was Re: Tesla Digest, Vol 141, Issue 4From : jimlux <jimlux@xxxxxxxxxxxxx >Date : Thu, 29 Aug 2019 16:54:27 -0700Delivered-to : teslaarchive@xxxxxxxxxx Delivered-to : tesla@xxxxxxxxxxxxxxxxxx Dkim-signature : v=1; a=rsa-sha256; c=relaxed/relaxed; d=earthlink.net; s=dk12062016; t=1567122868; bh=j7BfPOb9MaXBQ/onG29Jkvq2NW8L5q7HdJoq Ij4TMds=; h=Received:Subject:To:References:From:Message-ID:Date: User-Agent:MIME-Version:In-Reply-To:Content-Type:Content-Language: Content-Transfer-Encoding:X-ELNK-Trace:X-Originating-IP; b=T18XPfn OBY/paEsXNo+mlBmRy6Xr8AO7pbWc3Eywvb2L1OEPn7dJ9HxlpPGGppFd2Nz8uygjYZ oopK6LLLT81T/sWkTipZaJxNRmGDwbN38ft9jiaQSmMDLmxb4RlAeENaBmcqiq0Jfo3 vc1UxfqpJeD95rXZRDSwuPT9mDZk5CjdBuALFVlx2fWDShaq1E//mRAhLgBj7Ia+Gxd 7OglRYK+mg0FI7CjMAXFJqDDiX0nBmGHKmnxGqossKqSdqGbwbWWahWgoWWLJysPU3M /1HfxUTorYfOvhAQECLS274/7XlqbahXEw12RKJzd8tFfQQR5uKXWnFKYAVJJAp6ncA ==Domainkey-signature : a=rsa-sha1; q=dns; c=nofws; s=dk12062016; d=earthlink.net; b=H9ZYz3iRFT2KQsoK6aYePlw96IyZiLNGl/ihJDjeW9SwkMMZF1Fce/Nh7HHgqOuJl29WH0vlcWM424J7UVsW0LILe71Go/NDEfUcRFP/GRYzjs8V15mOD4I84tYWCFZVp+Yqu7FqZRmjPhaze2BGOPVeOEGcbZDjLbuK5oZQ0vCh4Re9/I5HTAd/Q/ltfjKxsparXy3aOcNh41cbVl4CMX7yt6zPSvRFnYGD8QUrCUZuLu4Mu51Ks60Pt7AU8bite8idrJ/CfJytg8OE9CrVTqvPRoahi47i0P0vWffMnkGJo3J8W+//bSKDRjk6NVhRE6S2yVBhs4FUHsY4ChvpaA==; h=Received:Subject:To:References:From:Message-ID:Date:User-Agent:MIME-Version:In-Reply-To:Content-Type:Content-Language:Content-Transfer-Encoding:X-ELNK-Trace:X-Originating-IP;In-reply-to : <!&!AAAAAAAAAAAYAAAAAAAAAAOuedvr2zVFqze6EYH4zB/CgAAAEAAAAHBNPj3nmLRKmZpBWHlU70sBAAAAAA==@embarqmail.com>List-archive : <https://www.pupman.com/pipermail/tesla/ >List-help : <mailto:tesla-request@tedward.pupman.com?subject=help >List-id : Tesla Coil Mailing List <tesla.tedward.pupman.com>List-post : <mailto:tesla@tedward.pupman.com >List-subscribe : <https://www.pupman.com/mailman/listinfo/tesla >, <mailto:tesla-request@tedward.pupman.com?subject=subscribe >List-unsubscribe : <https://www.pupman.com/mailman/options/tesla >, <mailto:tesla-request@tedward.pupman.com?subject=unsubscribe >References : <mailman.1171.1567117688.1143.tesla@tedward.pupman.com> <!&!AAAAAAAAAAAYAAAAAAAAAAOuedvr2zVFqze6EYH4zB/CgAAAEAAAAHBNPj3nmLRKmZpBWHlU70sBAAAAAA==@embarqmail.com>Reply-to : Tesla Coil Mailing List <tesla@xxxxxxxxxx >Sender : "Tesla" <tesla-bounces@xxxxxxxxxx >User-agent : Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.8.0
On 8/29/19 4:05 PM, hooverrl@xxxxxxxxxxxxxx wrote:
RF police
Daniel Kunkel,
FCC allows you to transmit 0.1 watts.
Dick
That's DC input power for AM broadcast band, and there's a 3 meter
antenna limit. (47 CFR 15.219)
That's sort of an unusual (and old) one, for all the others, most of the
regulations put field strength limits on things.. there are a few EIRP
limits (level probing radars). For instance for FM broadcast band = 250
microvolts/meter at a distance of 3 meters using an averaging detector.
(15.239)
you can convert that back to radiated power:
S (watts/square meter) = E(Volts/meter)^2/377 -> (250E-6)^2/377 ->
1.6E-10 Watts/square meter.
Then, the surface area of a sphere is 4*pi*r^2, so a 3 meter sphere is
about 113 square meters. So the maximum radiated power is about 1.8E-8
watts..
And that's for "intentional radiator" which tesla coils are not (at
least not generally, Wardenclyffe would be an intentional radiator, and
impossible to legally operate)
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