I mean with all the cell phones, Wi Fi routers, remote car door unlockers, garage door openers and radio stations, it seems there must be limit to how many frequencies can exist.
Perhaps when we use up the last one, something weird might happen to our brain waves or something.
2007-11-16 05:26:14 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Physics
RF spectrum allocation has been in issue of interest and intense competition for decades. Governmental bodies like the FCC and the ITU have been managing the spectrum. Much UHF TV spectrum has already been diverted to other uses. The move to digital transmission will make better use of what is allocated, and perhaps will free up more. Alternative technologies have already reduced out need for spectrum for the fixed services. Spread spectrum and frequency hopping technologies have greatly increased the utilization of spectrum.
Everything you mentioned except radio stations is very localized. That means the same spectrum can be reused wherever geographic isolation eliminates interference. Most happen in the gigahertz range where propagation distances are quite small. Most digital modes already use time division multiplexing. We still have a lot of room to get smarter before we run out of spectrum.
Of all these, the only one demonstrated to be detrimental to health is extensive use of cell phones right next to the head (RF heating), and especially driving while cellular. The latter kills and injures far more people than the RF heating.
2007-11-16 18:40:20 · answer #1 · answered by Frank N 7 · 1⤊ 0⤋
It's not crazy at all. They are already scarce, and the government has been releasing previously reserved frequencies to alleviate the shortage. We will need some new technologies in the future to squeeze more information into fewer frequencies, just as fiber optics overcame the limitations of copper wire.
2007-11-16 13:30:33 · answer #2 · answered by TG 7 · 0⤊ 0⤋
why do u care? ur be long dead mate perhaps u shud worry about cancer, aids and all the other disease's that exist right NOW or better yet, dont worry and be happy do as much as u can in ur life and enjoy it before we all die :]
2007-11-16 13:29:40 · answer #3 · answered by John T 2 · 2⤊ 2⤋
i know what you mean, i was just in my basement stocking up on all the canned goods i can, in my housecoat smoking uncontrollably, what are we going to do??? omg! i am so thankful to meet someone else who is so concerned, finally sanity!
2007-11-16 13:30:11 · answer #4 · answered by brians girl 4 · 1⤊ 1⤋
You are right, that does sound crazy.
2007-11-16 13:33:16 · answer #5 · answered by warcry80 2 · 0⤊ 1⤋
maybe, but i'll be dead by then.
2007-11-16 13:34:07 · answer #6 · answered by Anonymous · 0⤊ 1⤋