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Another Reason to be Annoyed by Cell Phones
lotussuper7 writes: "This story at newscientist (free, no registration, unlike the NY Times) has some insight into the amount of RF you may be getting from all those cell phones people around you are using. Might be time to buy a cell phone jammer."
Might be time to buy a cell phone jammer."
So essentially, transmit even more microwaves to jam people transmitting microwaves!!!
To prevent the problem in the first place, there should be a regulation body disallowing use of cellpones in trains, much like airlines regulation. Or a mechanism to defeat cell phone usage by blocking the range of frequencies, preventing people to make calls.
In the presence of a jamming signal cell phones around you would increase their output power in an attempt to hear their basestation. So all you'll achieve will be a increased drain on their batteries - like, they'll last 3.5 days instead of 4. Not to mention the radiation you'll be getting from the jammer itself.
Resistance is futile.
There may be reasons folks want to jam cell phones. Reducing RF almost certainly wouldn't be one of them. If you start interfering with it, the first thing it's going to do is turn the power up to try and talk over the interference. Congratulations: You have now made the cell phone transmit more RF, never mind the fact that your own jammer emits RF as well.
at least in the u.s. (and probably other countries with regulated spectrum as well), jamming cell phones is illegal.
Poof.
This is just theoretical. I'd really like to see some hard data on this. Has anyone taken time averaged measurements in crowded trains?