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Scanners On Aircrafts?  
User currently offlineJalto27R From United States of America, joined May 2004, 857 posts, RR: 15
Posted (9 years 10 months 1 week 5 days 7 hours ago) and read 2138 times:

Hi guys,
I wanted to know if anyone had tried to use a scanner on/during their commercial flight. I am flying FL PHL-TPA and the FL ATL-PHL back. So I guess I would particulary need info on FL's tolerance of scanners onboard. Thanks for the info.

Mike

24 replies: All unread, jump to last
 
User currently offlineMd80fanatic From United States of America, joined Apr 2004, 2659 posts, RR: 10
Reply 1, posted (9 years 10 months 1 week 5 days 7 hours ago) and read 2100 times:

What could be wrong? Scanners emit ZERO signal, they are recievers only. If they tell you otherwise, they are ignorant of their operation.

User currently offlineINNflight From Austria, joined Apr 2004, 3765 posts, RR: 60
Reply 2, posted (9 years 10 months 1 week 5 days 6 hours ago) and read 2084 times:

Put it into your pocket and use it with headphones, should not be a problem.


regards, Florian



Jet Visuals
User currently offlineFLY2HMO From , joined Dec 1969, posts, RR:
Reply 3, posted (9 years 10 months 1 week 5 days 5 hours ago) and read 2055 times:

Please tell us if you hear anything.

I read another thread regarding scanners that you can't hear anything on board the aircraft, but I say thats bull... Why wouldn't you hear anything if you're SITTING on the transmitter?!?!

Do take it with you but don't make it obvious that you are using a scanner and don't ask if you can use it either, you'll only get a no.

[Edited 2004-06-14 21:14:08]

User currently offlineJAL777 From , joined Dec 1969, posts, RR:
Reply 4, posted (9 years 10 months 1 week 5 days 5 hours ago) and read 2043 times:

They work fine. Although constantly changing frequencies (if your following your particular flight) gets annoying.

User currently offlineDC-10 Levo From United Kingdom, joined Nov 2001, 3432 posts, RR: 5
Reply 5, posted (9 years 10 months 1 week 5 days 5 hours ago) and read 2034 times:

I'm flying to Spain in July and really want to take my scanner onboard but I just think that something is going to happen. Wouldn't it be embarrassing if the pilot came on the PA and said "Would the person sitting in seat 6A please turn off their airband scanner!" Big grin

DC-10


User currently offlineJalto27R From United States of America, joined May 2004, 857 posts, RR: 15
Reply 6, posted (9 years 10 months 1 week 5 days 3 hours ago) and read 2004 times:

Thanks for the replies. I fly on the 26th of this month, and come back on the 6th of July. I can't wait, and I want to track the flight the whole way through, so you know exactly what is going on. I will be ok with switching frequencies when we leave and come into PHL cause that's all that is programmed into my scanner. Just hope I hear everything clearly cause if I miss one word it could be the end.

Mike


User currently offlineJamotcx From United Kingdom, joined May 2004, 1037 posts, RR: 25
Reply 7, posted (9 years 10 months 1 week 5 days 3 hours ago) and read 1989 times:

I tried my scanner a few years ago and all I got was interference from the moment the engines started.


Jamo


User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 8, posted (9 years 10 months 1 week 5 days 3 hours ago) and read 1976 times:

First, read one of the 30 or so other posts on this same topic..they should answer your questions. As for not hearing anything, there is some truth to that.... Once airborne, communication becomes quite rare..and even then very short.


"It's not the size of the dog in the fight, but the size of the fight in the dog"
User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 9, posted (9 years 10 months 1 week 5 days 3 hours ago) and read 1973 times:

Scanners, as do all electronic devices, emit radio waves. If you read the instructions that came with your scanner you will probably find a statement that reads something like this: "... This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications..."

This is why their use is prohibited on aircraft. Don't get me wrong, the chance that the low emissions from a scanner will interfere with a properly working communications and/or navigation system are slim. Do you really want to take a chance, just so you can listen to pilots talk to controllers?


User currently offlineDbo861 From United States of America, joined May 2004, 861 posts, RR: 1
Reply 10, posted (9 years 10 months 1 week 5 days 2 hours ago) and read 1941 times:

As a pilot(private pilot of Cessna 172s), I can tell you that the small receivers don't interfere at all with the avionics on a small single engine aircraft. My friend has one and he let me borrow it one time just for the hell of it. I wanted to know how it worked in the plane, and I didn't have any problems. My friend carries it with him whenever he flies as a precaution incase of lost communication. One of my friends has even used his cell phone in the plane while he was flying and THAT didn't even interfere with the radios(I wouldn't recommend using your phone while flying, but my friend isn't the brightest). Now, I'm not familiar with the avionics of the larger jet liners, but if it doesn't interfere with the radios on a small plane, I don't see why it would interfere with the radio signals of a bigger plane. I think the only problem would be knowing the frequency to be on...unless you knew the center frequency of where the plane currently is.

User currently offlineVictor hotel From Australia, joined Aug 2000, 305 posts, RR: 1
Reply 11, posted (9 years 10 months 1 week 5 days ago) and read 1905 times:

Dbo861 its not necessarily the radios that they expect will be interfered with by phones etc, on larger aircraft there is a lot of other devices that can get interference such as computers etc. I fly GA aircraft at the moment and always carry my phone with me (when I remember) as its a lot easier if you get a radio failure to call the tower than to do the whole radio failure procedure. It doesn't hurt any of my radios or transponder, as that is about the only electronic equipment other than ILS, ADF, and VOR, it is actually a suggested thing to take a phone with you and I have known several people who have had to use their phone. I wouldn't suggest it though once you start getting more advanced systems on the plane, I know of a story where a passenger had a phone on in a GA aircraft and the pilot couldn't get his GPS to work, when the pax said I wonder if it is my phone and after switching his phone off the GPS worked fine.
VH


User currently offlineVictor hotel From Australia, joined Aug 2000, 305 posts, RR: 1
Reply 12, posted (9 years 10 months 1 week 5 days ago) and read 1886 times:

I forgot to mention I have tried using my scanner whilst on the ground on an airliner, and was unable to pick up anything other than our own aircrafts transmissions.
VH


User currently offlineIowaman From United States of America, joined May 2004, 4312 posts, RR: 6
Reply 13, posted (9 years 10 months 1 week 4 days 23 hours ago) and read 1873 times:
AIRLINERS.NET CREW
FORUM MODERATOR

I used mine on Allegiant from DSM-LAS last week, didn't pick up anything, I turned it on over DEN.




Next fights: WN DSM-LAS-PHX, US PHX-SJD. Return: US SJD-PHX, WN PHX-MDW-DSM
User currently offlineWakeTurbulence From United States of America, joined Apr 2004, 1293 posts, RR: 17
Reply 14, posted (9 years 10 months 1 week 4 days 23 hours ago) and read 1854 times:

I used mine on my AA flight from LAX to BOS. I picked up all of our ground movements, and our TO clearance. After that with the roar of the engines I had trouble getting anything on any freq. Just be discrete when using it.
-Matt



Jetwash Images - Feel the Heat!!!
User currently offline320tech From Turks and Caicos Islands, joined May 2004, 491 posts, RR: 5
Reply 15, posted (9 years 10 months 1 week 4 days 23 hours ago) and read 1851 times:

Dbo861

One of my friends has even used his cell phone in the plane while he was flying and THAT didn't even interfere with the radios(I wouldn't recommend using your phone while flying, but my friend isn't the brightest)

Hey!!

It generally doesn't cause a problem to use cell phones in an aircraft. I have done so on several occasions, and still consider myself fairly bright  Smile. In Canada, cell phone use is not prohibited in aircraft, but the airlines still make the announcement not to use them. I understand it can cause a bit off havoc with the ground based cellular system.

It's hard to say what electronic devices will cause problems, because almost all of them transmit a little bit. I was walking past a couple of avionics guys, who were doing some kind of transponder test. I had my very small and insignificant looking MP3 player operating, and it pooched their test.

Nevertheless, it's likely that using a scanner will not create any problems.




The primary function of the design engineer is to make things difficult for the manufacturer and impossible for the AME.
User currently offlineJalto27R From United States of America, joined May 2004, 857 posts, RR: 15
Reply 16, posted (9 years 10 months 1 week 4 days 23 hours ago) and read 1840 times:

So what do you guys mean by the "roaring of the engines"? I plan on using headphones and I could just turn the volume up. Any other stories would be helpful. Thanks

Mike


User currently offlineDbo861 From United States of America, joined May 2004, 861 posts, RR: 1
Reply 17, posted (9 years 10 months 1 week 4 days 22 hours ago) and read 1825 times:

"It generally doesn't cause a problem to use cell phones in an aircraft. I have done so on several occasions, and still consider myself fairly bright"

Well, my friend was the PIC...


User currently offlineJalto27R From United States of America, joined May 2004, 857 posts, RR: 15
Reply 18, posted (9 years 10 months 1 week 4 days 6 hours ago) and read 1737 times:

So, does anyone have a definite answer on whether or not they work? And I still don't understand what you guys mean by "the roars of the engines" causing bad reception. Thanks

Mike


User currently offlineGoboeing From United States of America, joined Jun 2000, 2679 posts, RR: 14
Reply 19, posted (9 years 10 months 1 week 4 days 6 hours ago) and read 1732 times:

They work, but you won't be able to hear ATC much if at all. You'll hear the pilots of your own plane and maybe no others.

Nick


User currently offlineMikedlayer From United Kingdom, joined exactly 10 years ago today! , 399 posts, RR: 0
Reply 20, posted (9 years 10 months 1 week 4 days 3 hours ago) and read 1700 times:

I wouldn't mind following my flight from LHR-MAN-LHR or maybe LHR-AGP-LHR later in the summer. I've always wondered why and how such a small reciever with no transmitting capabilities would be able to practically disengage radio or navigaitonal equipment. Surly it can't be emitting such a wave to do this?

I might try mine when I fly up to MAN in a few weeks time and see what I can pick up.

Mike


User currently offlineDC-10 Levo From United Kingdom, joined Nov 2001, 3432 posts, RR: 5
Reply 21, posted (9 years 10 months 1 week 3 days 6 hours ago) and read 1651 times:

Thanks for the replies! I'm still unsure of whether to take it with me or not.

Do you really want to take a chance, just so you can listen to pilots talk to controllers?

I'm really not sure.

DC-10


User currently offlineGoingboeing From United States of America, joined Dec 1999, 4875 posts, RR: 17
Reply 22, posted (9 years 10 months 1 week 3 days 5 hours ago) and read 1644 times:

Yeah...who really cares if almost every airline states that use of AM/FM radios is prohibited in flight...in case you're curious, check out where the FM band ends and the Air band begins...go ahead and use the scanners despite the airlines expressed prohibition of their use while in flight on one of their aircraft. After all...we're enthusiasts...the rules don't apply to us.

User currently offlineJalto27R From United States of America, joined May 2004, 857 posts, RR: 15
Reply 23, posted (9 years 10 months 1 week 2 days 22 hours ago) and read 1600 times:

GoingBoeing,
Calm down buddy. I was just curious. You don't need to go all crazy sarcastic on me.

Mike


User currently offlineIakobos From Belgium, joined Aug 2003, 3312 posts, RR: 35
Reply 24, posted (9 years 10 months 1 week 2 days 17 hours ago) and read 1580 times:

In a receiver, the local oscillator (they can be two, three or even four such stages) produces a signal which, when mixed with the signal coming from the antenna results in the Intermediate Frequency, where amplification takes place and leads to the detection stage and conversion into the audible part of the frequency spectrum.
Radio Frequency - Local Oscillator Freqency = Intermediate Frequency.

Two conclusions: the LO signal can fall inside the VHF airband, a typical example would be RF 133.200 - LO 121.500 = IF 11.700; the said LO signal is in the milliVolt range, the LO (and IF) circuit are located inside a metal shield, itself inside the receiver's enclosure. Even with a spectrum analyzer located right next to the receiver, the radiated level of the LO signal is very weak (in the order of the microVolt, a millionth of 1 Volt)
No chance it can produce anything that might interfere.

On the receiver's performance side in an aircraft environment, unless you are in the cockpit or have a window seat, you will not be able to hear much.


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