A real problem is not with the airplane, but also with the fact that each cell phone on a plane will hit many cell sites and make a mess. You can experience the same thing by taking a cell phone up on one of the ridges overlooking silicon valley. Lots of signal, but can't make calls until you back away a few feet from the overlook (and masking some of the sites). Being overhead is outside the design of the cell system.

Back in the late 80's with an analog cell phone in a private plane just a few thousand feet up my friend made a call. Right after he hung up the phone rang and it was the cell phone company. They asked him to not use his phone in a plane. They said something about him lighting up their system like a christmas tree when he asked them how they knew.

Cheers,
Cliff

On Friday, Jan 17, 2003, at 12:54 US/Pacific, John M Stec wrote:

that was my point ...

bogus regulations of the FAA, supported by bogus 'science' of the Airline
Industry, results in this sort of thing, that is that RFI from cell phones
and/or blackberries will cause problems with flight ops. In fact all recent
tests done by FAA engineers failed to turn up any evidence of RFI induced
problems,
In sum ... There is NO evidence whatsoever that cell phones interfere with
Airliner operation, but the Airlines maintain they 'might', but then show
the airlines how to make money from the passengers for use of wireless and
whoa ... concerns of RFI evaporate.

how nice.



-----Original Message-----
From: dano [mailto:[EMAIL PROTECTED]]
Sent: Friday, January 17, 2003 2:26 PM
To: Raj Saxena; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: [BAWUG] RE: Anyone heading to Germany next month?


Aviation frequencies (both voice and nav) are 118MHz to 135MHz.
Afaik no civil air use anything above 136MHz. Tower freqs are usually
118-121MHz.

At 10:26 AM -0800 on 1/17/03, Raj Saxena wrote:
As long as your Blackberry radio is off you can still use it. Cell phones
definetly a no no. But I don't know what aircraft communications talk at
900,1800 or 1900?

Anybody have any idea on what frequencies an airplane uses? I know that
they
use the 130-175mhz to talk to towers.

Raj

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