Back in 1991/2 I worked with a design engineer in the UK who had developed (privately) a test meter for measuring the EM fields in open environment. One of his studies was the variations and concentrations of EM fields within buildings. I don't have any of the papers or results he prepared, but I do recall that a sweep of our office unit (which included manufacturing, test lab, R&D, purchasing and stores) one evening showed a high EMF concentration level in one stairway linking R&D and the manufacturing floor. There were hiVoltage power lines within 500 meters, but we could only conclude that the modern reinforced concrete construction had some effect on the concentration levels. Digital mobile phones were not around at that time and there wasn't a particularly high density of analogue cellphones in use within the building.
On another point, a recent UK press article has been claiming that the use of headsets/ear-pieces typically connected to mobile phones via 2.5mm jack are even worse than using the mobile next to your head. Their claim being that the two core audio cable is induced with radiation from the phone and carried up the length of the upper body? Has anyone heard of this angle in the media within your part of the world, or if any studies on this topic are including handsfree accessories? Having read a number of articles on the subject of ElectroMagnetic field Radiation that reach essentially two conclusions: - 1. Definite link to effects upon human cell structure 2. Inconclusive or no link. As an engineer I am very sceptical of the validity of any report or study on this subject given the various claims that many reports in this area over the past two decades have been biased to both sides of the argument! Short of doing your own studies - what is an engineer to believe? Edward Fitzgerald Direct Tel. : +44 1202 20 09 22 GSM Tel. : +44 4685 33 100 European Technology Services (EMEA) Specialist Global Compliance and Regulatory Consultancy Regional Offices in Australia, Canada and the UK. Global Telecom / Radio Intelligence Site <http://www.ets-tele.com/tics> psst... spread the word ! -----Original Message----- From: Robert Macy [mailto:[email protected]] Sent: 04 December 1999 00:15 To: [email protected]; [email protected] Subject: Re: Cell Phone Hazards? Near our building near downtown San Jose, in what are called "the county buildings", one county building wing had 15 cases of very rare form of brain tumors. The incidence of a single case is very rare but to have so many in one building and only in one wing of that building is statistically incredible. They did an extensive survey trying to find something different between the two wings of this building. As I recall, the survey took almost 18 months and the report's results were inconclusive. They looked at building materials, air conditioning and heating systems, water distribution, toilet facilities, and on and on, including emf - which not only included elf from the mains, but included the periodic blast of microwave as the nearby airport radar swept around. They found absolutely nothing different between the wings of their building. According to the epidemiologist, this form of cancer is rare because it grows so slowly that it takes too long to show up, something like 40 years from onset, which means most people died of something else first. She felt that whatever it was that these people were being exposed to had "sped" up the cancer turning it from so slow nobody notices to so rapid people died of it. Again, she wondered if something was accelerating the cancer's growth rate (with cancer present in the person anyway, but the exposure did not cause cancer). The only difference I could see (and was not mentioned in the report) was that people in the west wing (sick building part) tended to park their vehicles directly across Guadalupe parkway under 115KV massive power towers. I thought that perhaps the fluctuation entering and exiting their vehicles (These were the old steel body automobiles) did something to these people. I asked for small amount of funding to pursue this investigation but could not obtain funds. So measuring the situation, and collecting data on the incidences of who parked where, etc is now lost. [The towers are now gone, replaced by underground transmission lines to "beautify" the Guadalupe Parkway corridor. ] At that same time there were some publications claiming the acceration of cancer cells by exposing the cells to a range of magnetic field exposure, including variable amount of exposure. One paper claimed that varying exposure was the key. This is all food for thought. - Robert - -----Original Message----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> List-Post: [email protected] Date: Thursday, December 02, 1999 1:52 PM Subject: RE: Cell Phone Hazards? > >I remember seeing a television show quite a while ago where researchers had >found an extremely high cancer rate in children in one neighborhood with a >power substation. The rate for adults, however, was normal. > >One researcher said she believed that the higher rate for children might be >due to the fact that they were very active in running back and forth and >playing ball, etc. This caused them to cut through the magnetic fields at a >much higher rate than adults. This line of thought leads to the possibility >that there may be more to consider than just simple warming of tissue. > > Max Kelson > Evans & Sutherland > > -----Original Message----- > From: Barry Ma [mailto:[email protected]] > Sent: Thursday, December 02, 1999 11:48 AM > To: [email protected] > Cc: [email protected] > Subject: Re: Cell Phone Hazards? > > > Jon, > > You are right. When we get in our cars we have some risk. By >the same token, when we are home the risk is still not zero. If we go >climbing the risk would go even higher. The point is we know what is the >risk and how to protect ourselves. But the risk related to cell phone is not >as clear as driving, climbing, and staying home. > > Barry Ma > Anritsu Company > ------------- > On Wed, 01 December 1999, Jon Griver wrote: > > > It seems to me quite possible that electromagnetic fields >with strengths > > below the 'tissue heating' level may have a detrimental >effect. After all > > we know that electrical impulses are intimately connected >with the brain's > > operation, and we are dealing with fields an order of >magnitude stonger > > than those used in radiated immunity testing for >electrical and electronic > > equipment. We only expect electronic equipment to be >immune to 3V/m, but we > > subject our brains to 20 to 30V/m when we use a cell >phone. > > > > This being said, the cell phone is very convenient, and >has become a part > > of our way of life. I use a cell phone, though as little >as possible, > > knowing that there is a possible risk, in the same way as >I know I risk my > > life every time I get in my car. > > > > Jon Griver > > > >______________________________________________________________ > Open your mind. Close your wallet. > Free Internet Access from AltaVista. >http://www.altavista.com > > --------- This message is coming from the emc-pstc discussion list. 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