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Science Forum Index » Electronics - Basics Forum » AM receiver convert to ATC receiver
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| Joel Koltner |
 Posted: Mon Apr 28, 2008 2:14 pm |
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"Claude" <claudec@cae.com> wrote in message news:fuq0g9$3j5$1@dns3.cae.ca...
Quote: Ok last post on the subject. They are NOT illegal everywhere, many
businesses and restaurants use them.
Not in the U.S. they don't... at least not without attracting a lot of legal
trouble for themselves.
*Shielding* isn't illegal, though, and some companies might purposely build
rooms where RF has a hard time getting in and out.
You should think about WHY jammers are generally illegal though: RF doesn't
pay attention to walls or other boundaries in ways that are always obvious to
the human senses, so you have no way of knowing whether you're jamming some
cop in the next room or some physician in the car next to you even when you
have a low power jammer that works over "only" 50'. As such, you're
potentially putting someone at significant risk for some stupid joke with your
pals, hence it should be obvious why the laws are the way they are.
---Joel |
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| Michael Black |
| Posted: Mon Apr 28, 2008 2:26 pm |
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On Mon, 28 Apr 2008, Joel Koltner wrote:
Quote: "Claude" <claudec@cae.com> wrote in message news:fuq0g9$3j5$1@dns3.cae.ca...
Ok last post on the subject. They are NOT illegal everywhere, many
businesses and restaurants use them.
Not in the U.S. they don't... at least not without attracting a lot of legal
trouble for themselves.
And useage is no indicator of legality.
Most people who talk about wanting to jam cellphones don't have a clue
about what's involved or the rules governing the radio frequencies. Since
they don't know about the laws, if they felt a need to jam cellphones
likely they'd jump at the chance if offered a jammer. And of course, it
being illegal there are always people willing to supply the product, they
likely can make money from it. At the very least, little competition.
I don't doubt that some places in North America have cellphone jammers.
That doesn't make the legal. I have no doubt in other parts of the world
that some places use jammers; they may be "allowed" through lax laws, or
just lack of man power to track them down.
There may be places where they are legal, but having written that I find
it harder and harder to imagine it. Not because there might be some
countries in the world where they care less about radio frequencies, but
that cellphones have become so commonplace that they can't be treated like
the "wild west" of the early days of radio.
Michael |
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| Don Bowey |
| Posted: Mon Apr 28, 2008 3:29 pm |
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On 4/28/08 12:14 PM, in article
PmpRj.117444$6i4.92659@en-nntp-03.dc1.easynews.com, "Joel Koltner"
<zapwireDASHgroups@yahoo.com> wrote:
Quote: "Claude" <claudec@cae.com> wrote in message news:fuq0g9$3j5$1@dns3.cae.ca...
Ok last post on the subject. They are NOT illegal everywhere, many
businesses and restaurants use them.
Not in the U.S. they don't... at least not without attracting a lot of legal
trouble for themselves.
*Shielding* isn't illegal, though, and some companies might purposely build
rooms where RF has a hard time getting in and out.
You should think about WHY jammers are generally illegal though: RF doesn't
pay attention to walls or other boundaries in ways that are always obvious to
the human senses, so you have no way of knowing whether you're jamming some
cop in the next room or some physician in the car next to you even when you
have a low power jammer that works over "only" 50'. As such, you're
potentially putting someone at significant risk for some stupid joke with your
pals, hence it should be obvious why the laws are the way they are.
---Joel
Going a bit further, the Rules and Regs say than unlicensed equipment,
although they may meet the Part 15 requirements, must not interfere with
services that are licensed for operation on a frequency. To knowingly
interfere is a clear violation of the law. Frankly, if I knew of anyone
pulling the unfunny "prank" I would call the FCC and expect fast action. |
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