Subject: Cell phone mast exposure (Curry) Date: Thu, 9 Mar 2000 024304 -0600 (CST) From: "Roy L. Beavers"To: emfguru -------------------------------------------------- ...........We are often asked this question...... Dr. Bill Curry's answer deserves to be read by all...... Possibly Bill's answer is not the answer she was looking for. She might have preferred a simple "yes" or "no". Few situations in this EMF saga can be answered with a simple "yes" or "no". I can think of one, though, that is -- is the U.S. Government doing its "job" of alerting and protecting its citizens from the effects of EMF? No....... Cheerio...... Roy Beavers (EMFguru) roy@emfguru.com .....It is better to light a single candle than to curse the darkness..... NEW!!! Website... http://emfguru.com ...................People are more important than profits................. Missed opportunity... $$$$$ We could have changed the corrupted system!! $$$$$ McCain !! ---------- Forwarded message ---------- Date: Wed, 08 Mar 2000 20:02:54 -0600 From: "Bill P. Curry" To: NT4@groovy44.freeserve.co.uk Cc: "Roy L. Beavers" Subject: Re: mobile masts (fwd) Nina, Whether the mast is too close to you depends on two other factors: 1) the power of the transmitter and 2) the gain of the antenna. If you know the power the transmitter is putting into the anenna, you need to know also whether the radiation is emitted equally in all directions (isotropic emission) or whether the antennas are directional. If the antennas are directional, you have a situation like a light focused through a lens, the radiation is stronger in some directions at the expense of other directions. Usually anennas on cell phone towers are directional anennas and there are three directions of maximum radiation strength. These are spaced about every 120 degrees in the horizontal plane with zero degrees referenced to some compass direction. What is, perhaps, more important is that there are lobes in the vertical plane with varying amounts of emission strength. There is very little emission downward underneath the antennas and maximum emission in a narrow angular region near the horizon. At the distance you mentioned, you are probably in the main lobe where the emission is strongest. However, you are far enough away that the radiation strength will be diminshing inversely proportional to the square of slant distance between the antenna radiating center and your position. You need to try to get (from the application that the mast owner provided to whatever government agency approved the application) the radiation pattern of the antennas that constitute the installation. If you can get the manufacturer and model number of the antenna, the antenna radiation pattern and the gain of the antenna can usually be obtained on the internet. If you will get this information, plus the height difference between the antennas and you house, I will calculate the radiation density that you can expect at your location at no charge. Let me know if I can be of service. Bill Curry Roy L. Beavers wrote: > > Bill: > > Would you like to give this woman some expert advice.....? > > Thanks for the IEEE info. I had already covered that.... > > Roy Beavers (EMFguru) > roy@emfguru.com > > .....It is better to light a single candle than to curse the darkness..... > NEW!!! Website... http://emfguru.com > ...................People are more important than profits................. > Missed opportunity... > $$$$$ We could have changed the corrupted system!! $$$$$ > McCain !! > > ---------- Forwarded message ---------- > Date: Wed, 8 Mar 2000 22:44:06 -0000 > From: Nina Turner > To: rbeavers@llion.org > Subject: mobile masts > > Hello > > My friend recommended that you have a site about EMF exposure and I was hoping you might be able to help me? > > I would like to buy a house but noticed a mobile mast about 250m away in a nearby field. > > Is this too close? Do you think it poses a significant risk to health? > > Thanks! > > Nina -- ---- Bill P. Curry, Ph.D. |Physics is fun. EMSciTek Consulting Co. |Trying to make a living! 22W101 McCarron Road, |Phone: (630) 858-9377 Glen Ellyn, IL 60137 |Fax: (630) 858-9159 with prior notice Web page: http://www.EMSciTek.com ____________________________________________________ | Analysis, experiment design & software development | | for engineering and the physical sciences | ---------------------------------------------------- Archive provided courtesy of WaveGuide, http://www.wave-guide.org Reprinted with permission of Roy Beavers, http://www.emfguru.com