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Post Time: 04/06/2007 10:15:55 |
KLM
Total Forum Posts: 2 |
Could anyone advise me how to find out where a primary beam from a mobile phone mast and base station falls, as one has been erected less than 400m from my daughter's school, and the playground is the nearest point to the mast. |
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Post Time: 07/06/2007 16:48:56 |
topazg
Total Forum Posts: 13 |
I'm afraid this is extremely hard to tell without measuring. The main beam of the mast will fall about 80 - 100 metres away from the mast, and this is likely to be around 0.8 V/m or so.
400m away, the exposure is likely to be approximately one sixteenth of this, and is really likely to be so low as to not be a concern.
Sorry about the delay, and I hope that helps!
Best Regards,
- Graham |
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Post Time: 07/06/2007 18:25:35 |
Jean Philips
Total Forum Posts: 22 |
This is Alasdair Philips (not on my computer). Graham's reply needs a bit of clarifying.
The edge of the mainbeam comes down to ground typically between 80 and 150 metres from the mast. The centre of the mainbeam tends to aim generally for just below the horizon, so the school will be in the mainbeam. However the power does fall off with the square of the distance from the mast so, by 400 metres, the levels are likely to be low and not of any great concern. It will depend on how powerful the mast is. If you add the postcode or location of the school we can calculate an estimated field strength for you for 400 metres distance.
At present most children's exposure to pulsing microwaves comes from DECT cordless phones or wireless WiFi nodes in their own home. DECT phone units are by far the worst offender, but BT's WiFi HomeHub also contains a DECT unit that you can't turn off.
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