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story category In-Flight Wireless Use Dangerous?
New study says devices shouldn't be used
(old news - 03:06PM Wednesday Mar 01 2006)
tags: wireless
Just as the FCC had begun exploring letting people use phones and wireless devices in flight, a new study emerges (AP) claiming interference from such devices "could impact cockpit devices." Carnegie Mellon researchers and aircraft electromagnetic compatibility expert Bill Strauss concluded such devices should not be used in flight. The study, which monitored transmissions on three airlines, will appear in the March issue of the technology journal IEEE Spectrum. Also see the Carnegie Mellon Press release.

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Forums » In-Flight Wireless Use Dangerous?
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newyorkslick

join:2001-12-19
Rosedale, NY


3 edits

Thats . . . Hogwash

Doesnt Boeing and Airbus do tests on the Aircrafts systems to prevent devices from interfering with the systems?

I mean if its costing upwards of $100 Million to build one Boeing 777, Im sure they can design its systems to be protected against things like these, especially when boeing is trying to push its broadband connexion model.

GOLFnSUN
Enjoy the sun
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join:2002-03-03
Avalon, NJ
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Re: Thats . . . Hogwash

The IEEE is not some fly by night organization that was bought by the airlines trying to stop cell phones to make money. And the Carnegie Mellon engineers, if they say it may increase problems for cockpit systems, then it probably does.

All the "it isn't true" comments will be just carping because people don't want to give up anything they want - facts be damned.
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calvoiper

join:2003-03-31
Belvedere Tiburon, CA

Re: Thats . . . Hogwash

I'll wait for the study details.

CM claims that the risk is "higher than previously believed", a phrase that is, like the press release containing it, amazingly devoid of all specificity.

It could signify a huge risk, or it could mean that the risk has increased from one half second of GPS interference in every 3.6 million flights to one half second of GPS interference in every 3.58 million flights. Without more, little can be discerned.

CM's own press release states that between one and four cellphone calls are (illegally) made from most flights in the northeast US now, but doesn't call for increased enforcement of current laws--which, if there were an immediate threat to human life, it surely would.

CM is engaging in publicity hype. Whether or not there is anything behind the hype won't be known until the study is released.

calvoiper
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VoIP--the death knell of remaining voice monopolies!

cdru
Go Colts
Premium,MVM
join:2003-05-14
Fort Wayne, IN

At the time, Stanley Pons and Martin Fleischmann at the University of Utah were respected scientists as well, not people at some fly by night organization either. There little discovery turned out to be incorrect as well.

I'm not saying that the research is flaw. Just pointing out that even if a person is respected in their field, they aren't always correct.
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a

@qwest.net
lol, hang up and drive or fly and sleep, it'll still be there when you stop and then you can concentrate on one thing at a time...any ?'s...

Transmaster
Don't Blame Me I Voted For Bill and Opus

join:2001-06-20
Cheyenne, WY

Total Crap

Here we go again, if the avionics are this sensitive then it isn't safe to fly. this is the old case of use, and pay for our stuff or use nothing at all.

DHRacer
Fire Survivor

join:2000-10-10
Lake Arrowhead, CA

Re: Total Crap

Wifi works in my house and it hasn't crashed into the ground yet!

Seriously, what's the issue with interference in planes?

vpoko
Premium
join:2003-07-03
Jamaica Plain, MA

said by Transmaster See Profile :

Here we go again, if the avionics are this sensitive then it isn't safe to fly.
Common sense says true enough. If a 3 watt transmitter in your cellphone is a danger to avionics, then couldn't someone remotely crash a plane by pointing a big transmitting antenna at it?

Transmaster
Don't Blame Me I Voted For Bill and Opus

join:2001-06-20
Cheyenne, WY
·Qwest.net


1 edit

Re: Total Crap

said by vpoko See Profile :

said by Transmaster See Profile :

Here we go again, if the avionics are this sensitive then it isn't safe to fly.
Common sense says true enough. If a 3 watt transmitter in your cellphone is a danger to avionics, then couldn't someone remotely crash a plane by pointing a big transmitting antenna at it?
Absolutely correct I know ham radio operators that bounce signals off of high flying jet aircraft undersides increasing the range of a 2 meter, and 440 mhz transmission by many hundreds of miles. This has been going on for decades and no harm has ever been done.
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vpoko
Premium
join:2003-07-03
Jamaica Plain, MA

Re: Total Crap

said by Transmaster See Profile :

Absolutely correct I know ham radio operators that bounce signals off of high flying jet aircraft undersides increasing the range of a 2 meter, and 440 mhz transmission by many hundreds of miles. This has been going on for decades and no harm has ever been done.
And don't forget some Hams have been doing moonbounce for decades, and there's no sign of the moon crashing
shashinka

join:2000-09-16
West Boylston, MA
Also there is a limit on how much power they can transmit.
shashinka

join:2000-09-16
West Boylston, MA

Yeah it would have to be a lot of power with a highly directional antenna, that is tracking at 600 mph. They would also have to cover certain frequencies. They could go manual then to avoid a crash. I don't think it would affect GPS mounted on the top of the plane or even a compass, altimeter, etc. Good luck with that.

Corehhi

join:2002-01-28
Bluffton, SC

This actually happened on a flight I was on. Capt. asked if anyone had a cellphone on or sat equiptment. 2 minutes latter he asked again and said it was screwing up the nav. system and they had to use a backup system. Then a guy jumped up from his seat and turned off a sat. phone he had. Capt. then got back on the speaker and said thanks interference was gone. This was a sat. phone though.

It was on a American airlines flying from Miami to the Cayman islands.

Subaru
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Re: Total Crap

said by Corehhi See Profile :

This actually happened on a flight I was on. Capt. asked if anyone had a cellphone on or sat equiptment. 2 minutes latter he asked again and said it was screwing up the nav. system and they had to use a backup system. Then a guy jumped up from his seat and turned off a sat. phone he had. Capt. then got back on the speaker and said thanks interference was gone. This was a sat. phone though.

It was on a American airlines flying from Miami to the Cayman islands.
Who in the hell would use a Satellite phone on a moving plane...
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Corehhi

join:2002-01-28
Bluffton, SC

Re: Total Crap

He just had it turned on and stored. Not using it.
tdkyo

join:2002-12-07
Rochester, NY
American Airlines.... Go figure.

peter_m
Premium
join:2005-07-13
Canada, QC


1 edit
I think you are right on the money Transamaster. These planes a built to withstand a direct lightning hit! It's probably based on a business decision. Having said that, I think being stuck close to someone yapping for 3 hours is cause for a good Homer/Bart type of strangling!
8744675

join:2000-10-10
Decatur, GA

Remember that many planes in service today are over 25 years old. Cell phones, PC's, microwaves and such weren't even thought of back then, so how could the avionics engineers even anticipate the possibility.

Besides, people are downright rude when they talk on cell phones in close areas. I don't give a rats ass about about your delayed meeting and ideas for a new proposal. There's a time and place for everything, save it for then.

If I could get some peoples phone, away from them, it would end up in the little blue ocean in the tiny room at the back of the plane! Nobody NEEDS to be that in-touch or accessible.

Transmaster
Don't Blame Me I Voted For Bill and Opus

join:2001-06-20
Cheyenne, WY
·Qwest.net

Re: Total Crap

Boy you are sure right about the irritation there was some lady in line at the supermarket and her cell phone range she would not get out of the way but would get her stuff checked out so we cooled our heals which this witch had her conversation with whom ever.

I can understand a sat-phone messing with nav systems the frequencies they operate on are in the same range as the GPS receivers on a plane.
--
Low voltage Tech's are wimps, Real tech's use 45 pound filament transformers, plate voltages no less then 2400 volts with at least 10 amp's lighting 8877 triodes...BPL I'm coming to get you.

Corehhi

join:2002-01-28
Bluffton, SC

I think you should only be able to use the cellphone maybe 10 minutes a day. I would hate to be on a flight with some A**hole talking (probably yelling) for the whole flight. My favorite use to be housewives in their sweat pants at a supermarket talking away on the cellphone. What the H*ll could be that important. Think they thought they were cool. LOL.
43193594
Chauncey Gardiner

join:2005-08-03
CX 747-400

said by 8744675 See Profile :

Remember that many planes in service today are over 25 years old.
Not on most domestic carriers. Average fleet life of Continental, for instance, is less than 8 years.

vpoko
Premium
join:2003-07-03
Jamaica Plain, MA

Let the technical assessment win out here

If it's found to be unsafe, it shouldn't happen. Otherwise, I'm all for it.

My question is: do planes need repeaters? Seems like the fuselage would make one hell of a faraday cage.
DMS1

join:2005-04-06
Carrollton, TX

Re: Let the technical assessment win out here

said by vpoko See Profile :

My question is: do planes need repeaters? Seems like the fuselage would make one hell of a faraday cage.
The Boeing Conexion system, which is already in service with many non-US airlines, uses the concept of a picocell which provides a local access point for wifi and cellular connection.

The biggest issue with standard cellular service in the air is the handset can simultaneously 'see' too many cells.

BuriedCaesar
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Re: Let the technical assessment win out here

said by DMS1 See Profile :

said by vpoko See Profile :

The biggest issue with standard cellular service in the air is the handset can simultaneously 'see' too many cells.
And that seems to me like it might be quite harmful to the cell phone, but not the plane.
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shashinka

join:2000-09-16
West Boylston, MA

Re: Let the technical assessment win out here

I agree but its harmful to the carriers and not the phone.
eggboard
Premium
join:2000-11-18
Seattle, WA

Connexion doesn't offer cellular service yet; not sure if you were implying it did. I've spoken (as a reporter) to most of the firms planning on in-air data and cell access in the next few years in the US and abroad, and they think 2008 is the likely year for cell phone calls in the US from planes. In Europe, OnAir will be launching cell-to-ground service with two airlines starting this fall.

wriley
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join:2001-08-30
Edmonton, AB
clubs:

Its already been proven that it is safe and completly harmless, anyone every searched for bluetooth on a plane? You will find 10 - 20 cell phones that are one and working. Not to mention all the laptops with people who dont know how to shut off wireless, the nintendo ds's that are looking for other players etc etc it doesnt affect the plane at all.

Karl Bode
News Guy
join:2000-03-02

I think...

It's a conspiracy using mock-science aimed at shutting yammering cellphone addicts up.

And frankly, I'm all for it.

N3OGH
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join:2003-11-11
Philly burbs
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1 edit

Re: I think...

said by Karl Bode See Profile :

It's a conspiracy using mock-science aimed at shutting yammering cellphone addicts up.

And frankly, I'm all for it.
A-(insert favorite profanity here)MEN!

As soon as they open that flood gate, every jerk and their mother will leave their phone on ring on the next red eye I take back from the West coast.

The screaming infants and turbine whine are bad enough. Last thing we need on a plane is 100's of people yammering on their cell phones.

Edit for typo
fiberguy
My views are my own.
Premium
join:2005-05-20

Re: I think...

So everyone that has a cell phone is a screaming yammering jerk? Screaming infants, turbine whine, etc bother you? Maybe you should consider driving to your next destination. The angry, bitchy passenger is just as bad.

I guess everyone on a red eye is going to have people calling them... That's to assume that people on the ground are going to care to call people at 2am.

Is this thread about bitching about cell phone use? or the safety of it's very use on a plane?

N3OGH
Bear patrol must be working like a charm
Premium
join:2003-11-11
Philly burbs

Re: I think...

Hey, lighten up, fella.

It's an internet newsgroup thread, not congressional testimony over the patriot act....

ReVeLaTeD
Premium
join:2001-11-10
San Diego, CA

said by fiberguy See Profile :

So everyone that has a cell phone is a screaming yammering jerk?
No. Only the ones who persist on using the cell phone when they could easily wait until they arrived at their destination. Gets on my nerves when I'm in a supermarket or something and some soccer mom is arguing with her husband about the fact that he doesn't "satisfy" her anymore.

quote:
Screaming infants, turbine whine, etc bother you? Maybe you should consider driving to your next destination. The angry, bitchy passenger is just as bad.
Screaming infants is a result of gross negligence if the parent(s) do nothing to resolve the problem. And that happens frequently where the mother will just let the kid keep crying and crying and do absolutely nothing. THAT is a problem.

quote:
I guess everyone on a red eye is going to have people calling them... That's to assume that people on the ground are going to care to call people at 2am.
You'd be surprised. I was on a flight where a 13 year old brat was sitting on the cell from midnight to 4 am talking to someone about Xbox Live. It happens.

quote:
Is this thread about bitching about cell phone use? or the safety of it's very use on a plane?
They go hand in hand dude. Just like in cars, if you're yammering on the cell phone, you increase your chances of getting into an accident no matter how good a driver you might think you are. For a different reason, yes, but it's the same thing - a risk of a problem.

As far as the article, No, I don't believe that cell phones cause any electronic interference. HOWEVER, I think they detract from the flight experience because people aren't considerate of those around them. That leads to anxiety which could cause problems.
fiberguy
My views are my own.
Premium
join:2005-05-20

Re: I think...

You are right, I AM surprised!! You were on a flight where a 13 year old was on a cell phone for 4 hours?? On what phone? His own? umm.... Or the phone in the seat?

Lets examine:

Air Phones: Most are about average $4.00 per minute. At 4 hours, that about a $960.00 call - and that's not including the connection charge and the fact that SOME services are as high as $5.00 a minute - so add another $240 for that.

Personal Cell Phone: well, that's to assume that at 7 miles in the air for 4 hours there were towers that he could connect to for that long to be able to talk that much. Hell, I can't drive an interstate for 4 hours and not run into dead spots much less sit in an airplane at 38,000 feet on a cell phone for 4 hours - where a flight attendant would have put an end to that REAL quick!

So what do you think people - do we believe this statement? or is it a story that 'sounds good'....

Face it. You don't appear to like cell phones at all. In the store, on a plane, or probably in public at all. So let's get to the real point - you just don't like cell phones. Fine. Let's restrict them to the office and the home. Wait! Then we don't need them at all since we already have wired phones that have done the job for years already.

Screaming infants are a result of "gross negligence of the parents"? My god you are a moron.. ever heard of infants who don't deal well with the difference of pressure? Yea.. the parent is certainly guilt of "gross negligence" for not wrapping the infant in one of those airplane blankets, stuffing a pillow in it's face and placing it in the over head compartment. I hate a screaming kid just as the next on a flight, but face it - kids have to travel, and there isn't much that can be done about it. For every 5 people that complain about screaming kids on board, I am sure that at least 2 or 3 of them were once screaming kids them self.

I don't believe that cell phones increase car wrecks one bit. I think STUPID people cause car wrecks. There is NOTHING different about talking on a cell phone as there is talking to your passenger next to you. I've had a cell phone before many of the people here knew what they were. Not ONE single accident - ever. The only thing that has changed is that cell phones have become more affordable for the masses and when that happens you are bound to gain the attention of the already accident prone idiots and careless people that drive up numbers so something gets blamed on the cell phone. I bet if you did a study on the people that have creamed their cars while on the phone, you will probably find that those people already had a high rate of accidents or incidents in their life BEFORE they had a cell phone.

As for the "flight experience" - I don't give a rats ass about the "experience" - I, as a typical business traveler (the leading group of people that keep air lines flying in the first place) just want to get from A to B. Quite honestly, many of the BUSINESS travelers feel that recreational travellers with all their families, on board bags, kids, and other BS that they bring with them make our "experience" more painful. (Yea, business travellers tend to fly last minute or pay a much higher fare than the low budget flyer)

There is no "experience" in flying. That's assumed like many other things. Let's live in the real world for a minute. Everyone wants to be treated the way THEY see fit. There are millions of people in this country and there are a million ways people believe their "experience" should go. The truth of the matter - I'd like to see drink service confined to sippy cups and meal service reduced to protein bars. At least that way, the old bag sitting next to me won't fall asleep with her drink on her seat back tray for it to land on me the next change of turbulence or the food that goes the same direction. I'd like to see sleeping banned on a plane as well as I am tired of old lady Martha who hasn't showered in days falls over into my shoulder constantly. I also think we should ban fat people because they take up their seat and mine too.

The truth of the matter is this - why do you attack the cell phone? It's not the phone, it's the person who uses it in a way that is rude as SOME people do, or it's the unreasonable bastard who thinks their "space" should be a cone of silence. I guess on board conversations should be banned and the no-smoking signs should be replaced with no-talking signs too!

This country and many of the people in it always have a tendency to attack an issue from the wrong side of things. You deal with the person causing the problem. The cell phone is not the issue. Not everyone on a phone YELLS and BLABBERS into them. RUDE people do. I suppose that we should ban candy wrappers to stop littering as well? After all, everyone throws their wrappers on the ground too right? No, we go after the person that threw the wrapper on the ground, not the wrapper itself. When it comes to cell phones, is it too hard for a flight attendant to simply tell the blabbering idiot to please be a little more quiet or respect full to those around them as they are being loud? No - we are a nation of pretentious bastards who don't know how to simply talk to the fellow man any more. We are too easy to pick up the phone and call the cops vs. talking to the neighbors who we no longer care to get to know. And we are way too fast to pass laws banning, er, restricting our freedoms in the country because we are a nation of weenies that can't simply open our mouth and ask, politely without being a prick - you know, being the bigger man, and ask someone to please be quiet - WHEN IT'S REASONABLE.

ReVeLaTeD
Premium
join:2001-11-10
San Diego, CA

Re: I think...

Here's how we're going to do this. I swear I hate people who selectively delete words that come out of my keys.

said by fiberguy See Profile :

quote:
Personal Cell Phone: well, that's to assume that at 7 miles in the air for 4 hours there were towers that he could connect to for that long to be able to talk that much. Hell, I can't drive an interstate for 4 hours and not run into dead spots much less sit in an airplane at 38,000 feet on a cell phone for 4 hours - where a flight attendant would have put an end to that REAL quick!

So what do you think people - do we believe this statement? or is it a story that 'sounds good'....
It was his phone...a Nextel phone, to be exact, before the merger. If you knew about Nextel and its iDEN network, you'd know that your chances of getting and keeping signal are substantially higher than on CDMA or GSM due to the fact that Nextel wasn't a digital signal; it was basically a glorified radio at one point. I don't know HOW the phone stayed active that much, but it did. Hearing how "Halo r0xs" was my proof.

quote:
Face it. You don't appear to like cell phones at all. In the store, on a plane, or probably in public at all. So let's get to the real point - you just don't like cell phones. Fine. Let's restrict them to the office and the home. Wait! Then we don't need them at all since we already have wired phones that have done the job for years already.
I love my cell phone. Plan to get a Blackberry. However, I know how to use my cell phone to where I'm not purposely distracting and/or agitating those around me. If I need to make or take a call, I step out of the room - sometimes out of the building - before making or taking it. Not sitting in the middle of a meeting talking to someone about the football game.

quote:
Screaming infants are a result of "gross negligence of the parents"? My god you are a moron.. ever heard of infants who don't deal well with the difference of pressure?
Stop deleting relevant words. I said that screaming infants are a problem when the parents DON'T DO ANYTHING ABOUT IT. That's gross negligence. If the kid's hungry and the parent is busy reading some book while the kid wails for two hours what the hell do you call that?

quote:
I don't believe that cell phones increase car wrecks one bit. I think STUPID people cause car wrecks. There is NOTHING different about talking on a cell phone as there is talking to your passenger next to you.
I bet if you did a study on the people that have creamed their cars while on the phone, you will probably find that those people already had a high rate of accidents or incidents in their life BEFORE they had a cell phone.

Studies have already been done. It's statistics dude. Being on the cell phone without a handsfree detracts from your concentration due to the fact that a person has to concentrate on (1) balancing the phone against their ear, (2) steering, (3) signaling, (4) accelerating, (5) anticipation of the car(s) ahead, and (6) turning your head to look in mirrors, not to mention (7) the conversation at hand. It's like rubbing your tummy, patting your head, walking, chewing gum, and whistling at the same time. The more multitasking you have to do, the less you're able to do all tasks perfectly.

quote:
As for the "flight experience" - I don't give a rats ass about the "experience" - I, as a typical business traveler (the leading group of people that keep air lines flying in the first place) just want to get from A to B.
So by your logic, we should get rid of (1) in flight movies, (2) in flight meals, (3) first class, and (4) complimentary beverages?

The truth of the matter - I'd like to see drink service confined to sippy cups and meal service reduced to protein bars. At least that way, the old bag sitting next to me won't fall asleep with her drink on her seat back tray for it to land on me the next change of turbulence or the food that goes the same direction. I'd like to see sleeping banned on a plane as well as I am tired of old lady Martha who hasn't showered in days falls over into my shoulder constantly. I also think we should ban fat people because they take up their seat and mine too.
Hmm, seems I was right about your logic. Go figure.

quote:
The truth of the matter is this - why do you attack the cell phone? It's not the phone, it's the person who uses it in a way that is rude as SOME people do, or it's the unreasonable bastard who thinks their "space" should be a cone of silence. I guess on board conversations should be banned and the no-smoking signs should be replaced with no-talking signs too!
What part of "Only the ones who persist on using the cell phone when they could easily wait until they arrived at their destination" do you not understand? This isn't about the cell phone. It's about the people who aren't considerate of others when using their cell phone. Stop deleting relevant comments, I already told you this twice.

quote:
This country and many of the people in it always have a tendency to attack an issue from the wrong side of things. You deal with the person causing the problem. The cell phone is not the issue. Not everyone on a phone YELLS and BLABBERS into them. RUDE people do.
You have issues, seeing conspiracies where none exist. Nobody said anything of the sort and you know it.
fiberguy
My views are my own.
Premium
join:2005-05-20

Re: I think...

I am only going to respond to one point, the rest is useless actually and not worth taking the time.

Studies... studies are just about as good as those that run them and usually have bias to them. What is studied and concluded today will be refuted by the next study that comes out tomorrow.

Cell phones cause cancer - no they don't, yes they do! No they don't!

Wine is good, no it's bad.. no, it's good!

Chocolate is good, no it's bad.. yes!! It's good!

The restults of most studies that come out, such as cell phone safety studies that have beenenacted by advocacy groups to get rid of them, are a great back up when you run out of toilet paper.

ReVeLaTeD
Premium
join:2001-11-10
San Diego, CA

Re: I think...

said by fiberguy See Profile :

I am only going to respond to one point, the rest is useless actually and not worth taking the time.


Translated: I refuse to acknowledge that I took your words out of context, therefore like someone in 3rd grade I'm going to stick my fingers in my ears and go lalalala instead of admit that I didn't pay attention to what you said.

Telly Boot
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Vancouver, BC
·TELUS

Exactly, and not just yammering- what about people who get into an argument on their phones: what joy to sit next to that for three hours!
--
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GemSnake
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NetEffects

join:2002-03-05
michigan

WTF Is So Important?????????

This always amazes me. WTF is so important that you just have to call or be connected to. Isn't it enough two people are trying to get 150,000 pounds of machine in the air? Your life is so jam packed that you can't wait to work on your Excel sheet? It isn't enough that you are packed in with 100 other morons at 35,000 feet traveling at 500+ miles per hour? As mentioned above, most people don't know how to disable the wireless card. It would be best if everyone just kept that crap tucked away. Sit back, relax, and stop believing your life can't wait. Be happy the 2000 pounds of electronics are keeping you alive.
Or, be a prick and turn on all your gear to keep yourself occupied. Just don't sit next to me.
--
Im not an electrical engineer, but I play one on TV.

SimbaTLK1
Rawrrr

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Bethel Park, PA
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Re: WTF Is So Important?????????

said by NetEffects See Profile :

This always amazes me. WTF is so important that you just have to call or be connected to. Isn't it enough two people are trying to get 150,000 pounds of machine in the air? Your life is so jam packed that you can't wait to work on your Excel sheet? It isn't enough that you are packed in with 100 other morons at 35,000 feet traveling at 500+ miles per hour? As mentioned above, most people don't know how to disable the wireless card. It would be best if everyone just kept that crap tucked away. Sit back, relax, and stop believing your life can't wait. Be happy the 2000 pounds of electronics are keeping you alive.
Or, be a prick and turn on all your gear to keep yourself occupied. Just don't sit next to me.
And perhaps we shouldn't watch in-flight movies, read magazines, or eat food on the plane, seeing as those are for our personal enjoyment as well.

ifarrell

join:2000-08-10
Willow Spring, NC
·Vonage

Re: WTF Is So Important?????????

said by SimbaTLK1 See Profile :

said by NetEffects See Profile :

This always amazes me. WTF is so important that you just have to call or be connected to. Isn't it enough two people are trying to get 150,000 pounds of machine in the air? Your life is so jam packed that you can't wait to work on your Excel sheet? It isn't enough that you are packed in with 100 other morons at 35,000 feet traveling at 500+ miles per hour? As mentioned above, most people don't know how to disable the wireless card. It would be best if everyone just kept that crap tucked away. Sit back, relax, and stop believing your life can't wait. Be happy the 2000 pounds of electronics are keeping you alive.
Or, be a prick and turn on all your gear to keep yourself occupied. Just don't sit next to me.
And perhaps we shouldn't watch in-flight movies, read magazines, or eat food on the plane, seeing as those are for our personal enjoyment as well.
Watching an In-Flight Movie, Eating Food or reading a Magazine doesn't require annoying you fellow passengers (unless you're a messy eater).
Mobile Phones need to stay off planes because of the annoyance factor. If WiFi devices were allowed (safety or not), then Mobile Phone users would cry foul because it would debunk the whole Safety theory.
I'm just so glad I have an excuse not to talk to my annoying boss for a few hours when I'm flying.
NetEffects

join:2002-03-05
michigan

said by SimbaTLK1 See Profile :

And perhaps we shouldn't watch in-flight movies, read magazines, or eat food on the plane, seeing as those are for our personal enjoyment as well.
None of those would ever have a chance to interfere with the planes navigational system. In flight movies are delivered through an engineered system in the plane. The electronics have been designed into the entire package and have known effects. I'm not against personal enjoyment during air travel. I just feel this should be weighed against the lives of a couple hundred people. Your life versus my spreadsheet.... my work can wait.
--
Im not an electrical engineer, but I play one on TV.
bostonkarl1

join:2003-07-09
Arlington, VA

I don't care if it is dangerous or not, but...

As a very frequent flier, I simply don't want to hear a bunch of morons yelling into their cellphones for the duration of a cross country flight. That must be one of the cirlces of hell. One of the lowest ones.

There's a reason why the Quiet Car on the Accela train is always full.

I truely hope that cell phone usage on airplanes doesn't come into being, for the sake of my -- nay, everyone's -- sanity. If you absolutely positively really really need to make a phone call at 37,000 feet, there is a phone right there you know. The price kinda makes you think twice about calling Aunti Milli and gabbing at the top of your lungs for hours.

celeritypc
For Lucky Best Wash, Use Mr. Sparkle
Premium
join:2004-05-15
Caldwell, NJ

The real issue is...

It's not so much the fact that cell phones are obnoxious in flight--they are. The real issue is that airplanes use very thin wire that is not shielded to reduce the overall weight of the aircraft. Because of this, the signals or electricity sent over those wires are sent at very high frequencies--much higher than the 60 hz of standard household current. These frequencies are the same as used for wireless communication. That is why there is an issue with wireless communication devices on a plane, specifically, radios, tvs, cellphones and such. Other electronics such as laptops, mp3 players and video games don't cause a problem.

The reason they ban the use of all electronics during take-off and landing is more of a safety issue--if there is a problem, you will be able to hear the flight crew rather than being buried in your laptop or music.

See 7 replies to this post

dtbmjax

join:2001-01-03
Jacksonville, FL

Another Class of Service?

First Class, Business Class, Coach and Cell...all Cell users have to sit at the back of the bus...oops...plane. I'm not trying to start a segregation debate, but they used to have smoking and non-smoking sections. Why not a cell phone section? Then all those "yammerers" can sit together. Here's another idea..a cell head (bathroom). When the fasten seat belt sign is out and you need to make a call, head to the head.

I'll probably get beat up on this one. Oh well....

Cjaiceman
Premium,MVM
join:2004-10-12
Parker, CO
·Comcast Workplace
·Comcast

Re: Another Class of Service?

quote:
Why not a cell phone section? Then all those "yammerers" can sit together.
I totally agree, I would hate sitting next to some person on their cell for 3 hours in a plane. CRYING BABIES ARE ENOUGH, DO WE REALLY WANT CELL YAPPERS AS WELL?!?!?

Now, for the Wi-Fi, I really like that idea. I would not mind paying $5 for the trip to stay on the internet. I could surf the web, talk on AIM/YIM/MSN, listen to music or use ORB to watch my videos from my server. Thats the one thing I don't like about the airlines is lack of internet connection. Also, Laptops don't put out more than 35-100mW of power anyways.
abward

join:2004-07-14
Cary, NC
·VOIPo

Unpredictable

You all should read the recent story out of the U.K. where the Coast Guard, helicopters, etc were dispatched due to a satellite picking up a marine distress signal. It turned out to be some old lady's cable box emitting the signal (actually, it has happened twice now in the U.K.).

My point is, I don't want to be on the plane where a cheapo $25 wireless card (that a passenger got on eBay) starts emitting some signal it is not suppose to, and tells the plane it is at 10K feet when it is really at 1K feet!
pantrw

join:2006-01-22
Mexico

Cellphones, back, computers...hmmm

i agree, seriously, if you want to use all your cool gadgets, you should sit at the back of the plane, yap all u like, although i agree with using a special protection for the cables, internet while flying is a great way of making long flights short
--
Life is too beautiful to waste it by being stupid
plattypus1

join:2005-04-08
Riverside, CA
·Charter Pipeline

It seems to me...

...that avionics shouldn't be vulnerable to a few 3-watt transmitters that aren't even in their band. I can see satellite phones, but cellular phones just seems to be a ploy to get us to use those $2-a-minute airphone thingies.

If I remember correctly, aircraft radio and navigation equipment is just above the FM broadcast band, around 110 or so Mhz VHF. GPS is up in the Ghz range (the two main carriers at 1.2276 and 1.57542 Ghz) Cellphones operate at 800-900 Mhz analog and 900Mhz and 1.8-2Ghz digital. They have to be FCC type-approved, and that means they can't emit spurious emissions to a certain degree. There just shouldn't be a problem.

Of course, I usually trust the judgement of Carnegie Mellon and the IEEE...
Joe123456789

join:2003-11-24
Des Plaines, IL

Re: It seems to me...

I have read that the mythbusters are going to test this.

evergreek
Boeing Rocks

join:2003-05-25
Hialeah, FL
clubs:

Re: It seems to me...

Its an FAA rule and they WONT chg it simple. Go to your local FBO and complain if you want it so bad, watch them laugh their butts off at you .
russotto

join:2000-10-05
Collegeville, PA

Re: It seems to me...

It's an _FCC_ rule, not an FAA rule.

SterlingJ85
Obama 2008

join:2000-11-19
Millville, NJ
·PHONE POWER

There is no difference with analog/digital signals being in certain bands. The FCC never specified the technology that had to be used with cellular operators. In North America, the 800 MHz (aka. Cellular band aka. 850 MHz) and the 1900 MHz (aka. PCS band) are used. 800 MHz is the oldest, as it was the first bands to be used for analog (AMPS) systems (A/B side carriers @ 25 MHz each). This no longer the case, CDMA, GSM, iDEN, and analog all are able to operate in the 800 MHz area. However, you will mostly find iDEN (Nextel) in the high 700 MHz band.

900 MHz (for the most part) is public use spectrum.

900/1800 MHz are used in other countries, and thats why GSM phones and some CDMA phone support them. International Roaming!
--
-Sterling

tshirt
Premium,MVM
join:2004-07-11
Snohomish, WA
·Comcast

said by plattypus1 See Profile :

...that avionics shouldn't be vulnerable to a few 3-watt transmitters
....to be FCC type-approved, and that means they can't emit spurious emissions to a certain degree.
There just shouldn't be a problem.

type cerified= only means a company has submit documentation from their RF engineers on the theorical and prototype testing of their design. production changes and parts variation always results in a range of of output from any given unit of any product.
There just shouldn't be a problem.
Only in a perfect world.
Maybe more than a few 3-watt transmitters , newer planes with 5-600 seats with maybe 50% of the passengers phoning right before touchdown on a dark and stormy night...
the plane in auto-land right down to 50 feet
it's not the gross errors, easily noticeable to the cockpit crew that are the problem, but instruments showing the runway centerline 100 feet left or right of it's actually location, leaving the flight crew to make a judgement call during the last few (busiest) seconds of a flight.
accidents (airline/auto/industrial/home) are rarely from a single cause, but a series of malfunctions and errors coming together and ending badly.


tschmidt
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join:2000-11-12
Milford, NH
·Hollis Hosting
·Verizon Online DSL
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Intentional and unintentional radiators

The issue with in-flight electronics is complex. Intentional radiators operate as some fixed range of frequencies. Interference can be caused by direct interference or by harmonics of the intentional signal.

In many ways unintentional radiation is more insidious. Even though consumer electronics meet FCC level A or B each device radiates some energy with a frequency signature unique to it. A cabin full of electronics creates a hellish mishmash of electrical noise.

It is extremely difficult to predict the impact of this noise. The issue for aircraft is a lot the ARRL’s concern over Power Line Broadband – even if direct interference is not severe it raises the noise floor to negatively impact critical electronics.

Electrical faults, corrosion and a host of other issues are able to act as RF detectors and mixers under certain circumstances to create additional uncertainly. Think about stories of people hearing local radio stations on their phone or fillings and you get some idea the difficulty setting both effective safeguards and hardening devices.

/Tom
JimF

join:2003-06-15
Allentown, PA

Re: Intentional and unintentional radiators

said by tschmidt See Profile :

Electrical faults, corrosion and a host of other issues are able to act as RF detectors and mixers under certain circumstances to create additional uncertainly. Think about stories of people hearing local radio stations on their phone or fillings and you get some idea the difficulty setting both effective safeguards and hardening devices.
Exactly so. A lot of people these days, if they know anything about technology at all, know only about software. The real hardware problems of the world are another thing entirely.
glidereric

join:2001-12-06
Seattle, WA


1 edit

Re: Intentional and unintentional radiators

Being a FAA flight instructor and a EE in RF engineering specializing in rf communications I cringe at the thought of doing an IFR approach to an airport in bad wx having my instruments freaking out due to someones Game boy causing interference to my glideslope receiver.

Get a life! When the Captain says turn off the devices please do so.

We all want to live. A lot of these personal electronic devices emit RF interference.

If you had a spectrum analyzer and could see the crap that is emitted you would understand what I am saying.

Subaru
1-3-2-4
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join:2001-05-31
Greenwich, CT
clubs:
·Packet8
·Verizon Online DSL

Re: Intentional and unintentional radiators

said by glidereric See Profile :

Being a FAA flight instructor and a EE in RF engineering specializing in rf communications I cringe at the thought of doing an IFR approach to an airport in bad wx having my instruments freaking out due to someones Game boy causing interference to my glideslope receiver.

Get a life! When the Captain says turn off the devices please do so.

We all want to live. A lot of these personal electronic devices emit RF interference.

If you had a spectrum analyzer and could see the crap that is emitted you would understand what I am saying.
»www.bvsystems.com/Products/WLAN/···ebee.htm
--
It's NOT Ni-kon It's NE-KON!

"Life is like a dogsled team. If you aren't the lead dog, the scenery never changes"
NetEffects

join:2002-03-05
michigan

Thank you.

Just because your the 'wiz' with WiFi at the office doesn't make you an engineer qualified to make blanket statements about the robustness of the control system in an aircraft.

...as was said, just turn it off.
--
Im not an electrical engineer, but I play one on TV.
Forums » In-Flight Wireless Use Dangerous?


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