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Re: Airline Carryon



R.F.Fields are subject to the same mentality as Danger 1 Million Ohms.
Cell Phone use in aircraft is being investigated by qualcomm. Flight tests 
have been run using a small cell site inside the aircraft that sends traffic 
to a satellite network, and money is to be made on the network delivery. The 
phones would run very low power as they are 300 foot from a cell site and 
adjust power according to BER.

Anything that cannot be easily explained,  is furtile ground for the "R.F. 
explanination".
Making people unconfortable has been the Airline moto since the CAB was 
sacked.  Thieft and mutulation of baggage is the rule, not the exception. I 
do not fly commercial air carriers for pleasure, after having been abused 
for over 20 years of overseas business travel. I just hope they all go 
broke..
Art, KC6UQH
 ----- Original Message ----- 
From: "Bruce Bostwick" <lihan161051@sbcglobal.net>
To: <amsat-bb@amsat.org>
Sent: Tuesday, July 12, 2005 4:35 PM
Subject: Re: [amsat-bb] Airline Carryon


>> There is no doubt in my mind that the rules and regulations  concerning 
>> RF
>> devices in flight are the result of the most worst case scenario 
>> possible.
>> 99.9 percent of the time, most any device on any aircraft would not  even 
>> be
>> noticed.
>>
>
> Depends on the type of emission, the frequency (at least  approximately), 
> and the power output.
>
>
>> I've posted here before and I've often wondered why it is that the
>> LO in some device like a radio receiver is sooooo damaging when you 
>> consider
>> that these aircraft fly the beginning and end of their flights  through 
>> some
>> of the most RF polluted corridors known to man.  Microwave systems, 
>> two-way
>> systems, cellular telephone towers, TV and Radio broadcast and on and
>> on....transmitting thousands of watts of RF....birdies, noise, 
>> harmonics,
>> non-linear junctions up the gazoo mixing all this hash up in 
>> overabundance.
>> So much of a deal is made of a LO....why you'd think that aircraft  would 
>> be
>> falling out of the sky every day, all day.
>>
>
> Those are outside the fuselage, and attenuated down to almost nothing  by 
> the window apertures which are quite small in comparison to the  typical 
> wavelengths of the highest power emitters.
>
> And again, it really depends on frequency, power, and what part of  the 
> wiring is resonating, and what's missing a toroid that really  should be 
> at its connector and where.
>
>
>> There is no way that every
>> single passenger turns his/her cell telephone or blackberry or WIFI  off
>> during takeoff and landing or during flight.  There is a serious 
>> proposal to
>> allow celluar telephones to be used during flight.  Holy  cow....please,
>> NOOOOOOOO.
>>
>
> I'm sure plenty of people use various kinds of unintentional emitters 
> (radio receivers, non-WiFi computer equipment, etc.) on flights with 
> negligible effects on the avionics.  There really is no good reason  to 
> have the *intentional* radiators turned on, although the kids  playing 
> multiplayer games via WiFi might disagree with me on that one  (not that 
> they're right ..), and using cellphones on an airline  flight is a) 
> inconsiderate, b) quite likely to screw up the avionics,  and c) almost 
> guaranteed to blanket a large number of cell sites on  the ground. 
> [Because of (c) the FCC does not allow ANY cellphone use  in an aircraft 
> that is not in physical contact with the ground,  airline or otherwise. 
> If they're talking about changing that, a lot  of far more stupid things 
> are bound to happen soon.]
>
> I think the LO in my HT is probably the last thing the flight crew  will 
> ever need to worry about ..
> ----
> Sent via amsat-bb@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT member? Join now to support the amateur satellite program!
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----
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