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#1
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![]() "David Eduardo" wrote in message ... The thoroughly undocumented cases (no studies of groundwater contamination, etc.) was based on the effects of stations with twice the power allowed in the US on AMs. Low levels of AM as experienced in the US would be very different. While I think this whole thing is just another pseudo-science scare.... It is NOT true that US stations have much lower field strength on AM. AFAIK, very few foreign stations are directional at any power. Some US 50 kW stations have pretty potent ERP in their beam. Not a megawatt, but quite a bit nevertheless. I'm a lot more worried about teens and others I see wandering around with a cell-phone permanently attached less than an inch from their brain. |
#2
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![]() "R J Carpenter" wrote in message ... "David Eduardo" wrote in message ... The thoroughly undocumented cases (no studies of groundwater contamination, etc.) was based on the effects of stations with twice the power allowed in the US on AMs. Low levels of AM as experienced in the US would be very different. While I think this whole thing is just another pseudo-science scare.... It is NOT true that US stations have much lower field strength on AM. AFAIK, very few foreign stations are directional at any power. Some US 50 kW stations have pretty potent ERP in their beam. Not a megawatt, but quite a bit nevertheless. the field strength of AM radio stations is measured in volts (microvolts) not watts. the field strength is inversely proportional to the square of the distance. any study that relates any form of radiation, electromagnetic or otherwise that does not refer to quantities measurements AND duration of exposure to some other effect such as Leukemia is worthless. I'm a lot more worried about teens and others I see wandering around with a cell-phone permanently attached less than an inch from their brain. |
#3
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![]() "R J Carpenter" wrote in message ... I'm a lot more worried about teens and others I see wandering around with a cell-phone permanently attached less than an inch from their brain. And their retinas as well..... 900 mhz --- I can recall around 20 years ago (don't get on my case as to whether it was 16 or 22 or 18 years ago) but the FCC advised the amateur radio community that if you don't do something to increase your numbers, we're gonna have to start taking your VHF, UHF, microwave allocations away. This spectrum is too valuable for you to hold when your numbers are declining and you're not using them anyway. They (FCC) discussed a codeless "communicator" license. The ARRL countered with a "Novice Enhancement" program, which satisfied the Morse Code fetish requirement, and, as it turned out, did not bring the 50,000 new hams per year into the service as they claimed it would. But anyway, IIRC, somebody's idea was to allow novices voice privileges on 902 Mhz, and it was not considered seriously , and one of the reasons cited was safety. |
#4
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In article ,
R J Carpenter wrote: is NOT true that US stations have much lower field strength on AM. AFAIK, very few foreign stations are directional at any power. Particularly in Europe, few stations even have vertical radiators. -GAWollman -- Garrett A. Wollman | As the Constitution endures, persons in every | generation can invoke its principles in their own Opinions not those of| search for greater freedom. MIT, LCS, CRS, or NSA| - A. Kennedy, Lawrence v. Texas, 539 U.S. ___ (2003) |
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