New evidence may ban laptops in planes

BovineOne · 09-03-2002, 11:29 PM

http://netscape.com.com/2100-1105-956300.html?type=pt

Quote:

Britain's Civil Aviation Authority is considering implementing the ban following research carried out earlier this year by NASA scientists into UWB. The ban was first reported in Monday's The Times newspaper. The researchers, based at NASA Langley, found evidence that UWB devices could affect a plane's electronics, including its instrument landing system and its collision avoidance systems.

...

All laptop use might have to be stopped, because air crews could not be expected to tell which laptops might include a UWB chip and which might not, so a blanket ban could be the only answer.

dbaker · 09-04-2002, 12:05 AM

If they can't think of another solution, it seems that they're not trying very hard.

Nugget · 09-04-2002, 09:54 AM

What is UWB?

daa · 09-04-2002, 10:25 AM

see link in story:

http://news.zdnet.co.uk/story/0,,t269-s2106347,00.html

UWB is a radical radio technique that transmits a stream of very low power pulses without a central frequency. Theoretically, these could be broadcast anywhere in the entire radio spectrum, but concerns about interference with existing services means that they have to avoid some areas such as those used by satellite navigation systems and cellphones, with most of the transmitter power falling between 3GHz and 10GHz where existing services are fewest. Spectrum owners are concerned about UWB both because of the potential of interference, and because UWB is in effect using parts of the radio spectrum that the existing owners have paid for.

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09-04-2002, 12:05 AM	#2
dbaker Senior Member ITYT Captain Join Date: Sep 2001 Location: IAH/HOU Posts: 2,354	If they can't think of another solution, it seems that they're not trying very hard. __________________

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09-04-2002, 09:54 AM	#3
Nugget Senior Member ITYT Navigator Join Date: Sep 2001 Location: AUS [Austin, TX, USA] Posts: 610	What is UWB?

09-04-2002, 10:25 AM	#4
daa Senior Member Join Date: Sep 2001 Location: DEN Posts: 110	see link in story: http://news.zdnet.co.uk/story/0,,t269-s2106347,00.html UWB is a radical radio technique that transmits a stream of very low power pulses without a central frequency. Theoretically, these could be broadcast anywhere in the entire radio spectrum, but concerns about interference with existing services means that they have to avoid some areas such as those used by satellite navigation systems and cellphones, with most of the transmitter power falling between 3GHz and 10GHz where existing services are fewest. Spectrum owners are concerned about UWB both because of the potential of interference, and because UWB is in effect using parts of the radio spectrum that the existing owners have paid for.

08-26-2015, 11:27 AM	#5
2teck Junior Member Join Date: Aug 2015 Posts: 10	[2teck.com] ĐÈN PIN TỰ VỆ SIÊU SÁNG ‪#‎Giá‬: 429.000đ ‪#‎Hotline‬: 0903191970 - 0934155491 ‪#‎ĐC‬: 521/93b Cách Mạng Tháng 8, Phường 13, Quận 10, Tp.HCM ĐẶC ĐIỂM NỔI BẬT - Đèn pin tự vệ siêu sáng cao cấp - Đèn led công suất cao tiết kiệm năng lượng - Thấu kính mắt cá khuếch tán cực rộng - Tầm chiếu đến hơn 100m - Có zoom từ 1x - 2000x - Vỏ ngoài bằng kim loai gia cố bằng thép - kéo dài đến 40cm - Có móc khóa kèm theo - 3 chế độ khác nhau: sáng mạnh, sáng tiết kiệm năng lượng, cấp cứu - pin sạc công suất lớn và sạc được hơn 1000 lần - Có khay pin AAA để thay thế. - Bảo hành 3 tháng - Sản xuất: TQ