Hi Bao. The cellular equipment you found is an example of a major RF transmitting facility under the jurisdiction of the FCC. Typical facilities include radio and television broadcast stations, satellite-earth stations, experimental radio stations and certain cellular, PCS and paging facilities.
The warning sign you found helps define a keep-out area near the transmit antennas such that unknowing persons are protected. These facilities are required to undergo routine evaluation for RF compliance whenever an application is submitted to the FCC for construction or modification of a transmitting facility or renewal of a license. Failure to comply with the FCC's RF exposure guidelines could lead to the preparation of a formal Environmental Assessment, possible Environmental Impact Statement and eventual rejection of an application. Technical guidelines for evaluating compliance with the FCC RF safety requirements can be found in the FCC's OET Bulletin 65. In short, the keep-out areas provide a safe buffer away from strong transmitters. The cell transmissions from different nearby basestations are not really additive. They transmit in different bands, or on different channels within those bands. Hope this helps. Regards, Brian C. Gallagher RF Hardware Engineer Vehicle WLAN Development DENSO INTERNATIONAL AMERICA, INC. North America Research Laboratory-California Office Tel (760) 597-7431 [email protected] Bao Nguyen <[email protected]> Sent by: To discuss-boun...@s "SoCalFreeNet.org General ocalfreenet.org Discussion List" <[email protected]> cc 08/20/2009 01:41 PM Subject Re: [SCFN] Cell phones and RF/microwave radiation are Please respond to identically carcinogenic and "SoCalFreeNet.org genotoxic General Discussion List" <disc...@socalfre enet.org> I understand RF has always been here since the root of life and I don't see any problem with them. But here's the question I have. I've been to places where there's a cell equipment nearby, the ladder leading up to it have a FCC warning, something to the fact "high-power RF electromagnetic." Anyone care to explain what are these for and what happen when adding enough of them in a city block, would that change the "small exposure" to larger and how can one quantify the RF exposure level? thanks, -bn On Wed, Aug 19, 2009 at 11:15 PM, Matt Fanady<[email protected]> wrote: > RF radiation is a "non-ionizing" form of radiation and does not cause > cellular damage in small exposures. It is no more dangerous than visible > light. You of course realize that visible light is the same thing as RF, > just at a higher frequency right? Please take your flame-bait elsewhere. > > -M@ > > On Wed, Aug 19, 2009 at 10:20 PM, Robert Broska <[email protected]> wrote: >> >> Because gamma waves and RF/microwave radiation are identically >> carcinogenic and genotoxic to the cellular roots of life, the safe dose of >> either kind of radiation is zero. No study has proven that any level of >> exposure from cell-damaging radiation is safe for humans. Dr. Carlo confirms >> that cell damage is not dose dependant because any exposure level, no matter >> how small, can trigger damage response by cell mechanisms.8 >> >> >> >> This is quoted from the extensively footnoted site: >> >> http://www.globalresearch.ca/index.php?context=va&aid=7025 >> >> _______________________________________________ >> SoCalFreeNet.org General Discussion List >> To unsubscribe, please visit: >> http://socalfreenet.org/mailman/listinfo/discuss_socalfreenet.org > > > _______________________________________________ > SoCalFreeNet.org General Discussion List > To unsubscribe, please visit: > http://socalfreenet.org/mailman/listinfo/discuss_socalfreenet.org > _______________________________________________ SoCalFreeNet.org General Discussion List To unsubscribe, please visit: http://socalfreenet.org/mailman/listinfo/discuss_socalfreenet.org
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