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| Thread ID: 112576 | 2010-09-12 10:35:00 | UK cell phone masts at 3kw!! | Strommer (42) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1136642 | 2010-09-12 10:35:00 | Found this recent news item: The UK regulator Ofcom has announced that the maximum power output of cell-phone masts can double to 3162 watts, surprisingly abandoning its earlier quadrupling proposal . Ofcom had originally proposed quadrupling the power to 6309 watts but were evidently dissuaded by the consultation responses . 3kw is a hellofa lotta power . I can see why some people don't want to be near them, schools included . What is the power rating here in NZ? |
Strommer (42) | ||
| 1136643 | 2010-09-12 11:35:00 | Mmm.. when I read that I was quite supprised, AM stations and such can get up to 100's of kW | forrest44 (754) | ||
| 1136644 | 2010-09-12 11:47:00 | But we are a lot further away from them... | Agent_24 (57) | ||
| 1136645 | 2010-09-12 12:22:00 | roast ya nuts | mathius (7855) | ||
| 1136646 | 2010-09-12 20:12:00 | 900MHz at 3kW is going to give some nasty injuries, it depends though. are "cellphone masts" the initial service supply towers or the local repeaters (Local repeaters are the ones you see around suburbs) if its the supply towers then it won't be as bad as the repeaters but its still a bit concerning for some residents. | The Error Guy (14052) | ||
| 1136647 | 2010-09-12 23:38:00 | Is being close to a powerful AM transmitter a concern? | Andrew B (867) | ||
| 1136648 | 2010-09-12 23:44:00 | Only if you swallowed pieces of your tin foil hat. | ubergeek85 (131) | ||
| 1136649 | 2010-09-13 01:26:00 | Don't know the details, but the 3kW might be only 500W in each of 6 directions. And each of the 500W might be only 20 watts of real power multiplied 25x by the antenna. The antenna doesn't create any extra power, it just concentrates the 20 watts so that it peaks in the direction of the horizon at the expense of closer-in locations Even if a person could somehow absorb all the power radiated in a given sector, it would still only amount to the 20 watts of real power that's being radiated in that sector You would have to be 30m tall contortionist within 2m of the mast to absorb all the power in a 60° sector! And even then you would only get 20W |
BBCmicro (15761) | ||
| 1136650 | 2010-09-13 04:37:00 | New Zealand cell sites radiate mostly single or low-double digit power levels and the beam is only a few degrees below horizontal, sufficient to meet the effective receive horizon of the next cellsite. For all practical purposes the power level is negligible at the point where the lower lobe of the beam would hit the ground and they rely on microvolts of signal at the cellphone itself. I don't understand the idea of 3kW output (even if referring to erp which is effective radiated power, the transmitter power into the antenna multiplied by the antenna gain) because the range of a cellsite is determined by the weakest link, which is in fact the cellphone itself. Cellphones put out significantly less than 1 watt into an antenna with negative gain (or worse if it's an iPhone) so there is no point in sending cellsite signals long distances when the cellphone can't reply! Most of our sites are so low powered they couldn't push an old lady off a chamberpot, not even wirh a following wind. Cheers Billy 8-{) |
Billy T (70) | ||
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