Gyre, as the FCC sees it, interfering with any of those bands is illegal (as is selling/importing any devices that are specifically designed to do so). I doubt they've got crack enforcement teams chasing down potential violations, but they get defensive and tend to come down on people once it's been reported. And in the post-9/11 world, people screwing around with whole towers or doing the serial offender thing run the risk of domestic terrorism charges as well (cellular is considered essential for emergency services these days).
LOL about joining in, aserendipity. I generally just kind of laugh my way through it. When I lived in NY my friends and I coined the term 'floor show' for people getting too loud or acting out in public spaces. Mostly we meant it for crazy homeless people shouting at no one or somebody going through a breakup or massive argument on the sidewalk or subway, but as cell phones have become so ubiquitous it just kind of spills over. Comedy.
Alas, the market calls. Have a good evening everyone!
Not really disagreeing, just pointing out the political motivation of an fcc that won't perform the important parts of it's job any longer, acting only as a lapdog of interests that are well documented as incestuous in the fcc.
They know that there are legitimate uses for jammers, and harsh enforcement will mean use of cruder devices.
This is hardly an issue in some countries.
As an example, last night I was in a steel building aprox 80 by 40 feet on ten acres of land, about a mile from the nearest neighbor, forty miles from the city.
If a jammer was used, even a powerful full spectrum version, if it did leak out of the steel enclosure, the only possible other use it could interfere with would be an intermittent car while it was near.
A low power version wouldn't reach the road, even outside the building.
Use in this location would have no intent or possibility of interference with others.
And industrial and commercial espionage is more, not less common now, including video capability.
And as I mentioned, a device can be legal until used for an "improper" purpose.
Even the term "jammer" is a loaded word.
Worth noting the high level of expertise in blocking signals in the us military.
Didn't they actually turn gps on and off at one point?
Illegal, but another example of buzzword politics by the fcc, a now pointless structure.
Destructive for the country, I think.
Of course, the use of 'security' when all other excuses fail is an old cliche.
As for real jamming, after seeing a story about poor bank digital security, I designed an emp generator over coffee with a friend one day.
From some sigint reports I've seen, the design has been built by others and works.
Technical and engineering difficulty building it- low. Cost- low. Time required - low.
No doubt someone has finetuned and made an exotic version of it, but not needed.
Precision machining would raise the output/power efficiency.