View Full Version : Re: Cell phone regulation on airlines?
C J Campbell
October 11th 04, 08:01 PM
"DaveC" > wrote in message
al.net...
> Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> so the flight attendant keeps telling me.
The regulation against using electronic devices that have not been
determined by the operator to be harmless pre-dates the invention of
cellular phones. The text of the regulation is:
§ 121.306 Portable electronic devices.
(a) Except as provided in paragraph (b) of this section, no person may
operate, nor may any operator or pilot in command of an aircraft allow the
operation of, any portable electronic device on any U.S.-registered civil
aircraft operating under this part.
(b) Paragraph (a) of this section does not apply to-
(1) Portable voice recorders;
(2) Hearing aids;
(3) Heart pacemakers;
(4) Electric shavers; or
(5) Any other portable electronic device that the part 119 certificate
holder has determined will not cause interference with the navigation or
communication system of the aircraft on which it is to be used.
(c) The determination required by paragraph (b)(5) of this section shall be
made by that part 119 certificate holder operating the particular device to
be used.
The FCC prohibits using cellular phones on aircraft, but that applies only
to cellular phones, few of which exist any more. Most modern 'cellular'
phones are in fact PCS phones, which are not subject to that regulation.
This ban was created when the regulations for cellular phones were first
written and was not included in the regulations for PCS phones.
Anyway, cellular phones are specifically banned by the FCC and few flight
attendants are probably willing or able to verify whether a particular phone
is covered by the regulation or not, while all portable electronic devices
are banned by the FAA unless the air carrier has determined that they will
not be harmful. Few air carriers are probably willing to test every type and
model of electronic device for radio interference, but most of them have no
problem with pocket calculators, laptop computers, and the like, even though
a laptop computer or PDA with Bluetooth or WiFi would seem to be a potential
problem.
Ron Natalie
October 11th 04, 08:35 PM
DaveC wrote:
> Cell phone usage is restricted on all domestic commercial flights by the FAA,
> so the flight attendant keeps telling me.
Nope. The FAA rules have not changed on this, nor have the FCC ones.
You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
airborne. That is an FCC rule.
The FAA rule is just that the airline (i.e., the operator) must
determine when electronic devices are safe to use. The only thing that
has really changed is the "conventional wisdom" on the FAA's part got a
little tighter after some supposed interference issues (primarily blamed
on laptops) a few years back.
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
Yes, all airborne use is prohibited. On cell phones permanently
installed on private jets, there has to be a warning label attached to
prohibit it's use in the air. (FCC rule).
>
> So my question... what is the technical reason for restriction of cell phone
> us on commercial flights? Is this reason valid, technically? Or is it simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
>
Forcing you to use the Airphones is the least of the FAA's or the FCC's
concern.
The real reason is that the cellular phone industry does not want you
to. Their bread and butter is the ground based caller, and their
systems are not designed to work with callers that have some altitude on
the system (there are techncial deficiencies in this that I won't go
into unless you really want to know). As a matter of fact, the cellular
industry fought a company who wanted to share the spectrum
tooth-and-nail over airborne use.
Oddly, this prohibition is NOT written into the rules for the newer
wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
(800MHz) band. However, most of the carriers with these services still
discourate airborne use.
Ron Natalie
October 11th 04, 08:35 PM
DaveC wrote:
> Cell phone usage is restricted on all domestic commercial flights by the FAA,
> so the flight attendant keeps telling me.
Nope. The FAA rules have not changed on this, nor have the FCC ones.
You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
airborne. That is an FCC rule.
The FAA rule is just that the airline (i.e., the operator) must
determine when electronic devices are safe to use. The only thing that
has really changed is the "conventional wisdom" on the FAA's part got a
little tighter after some supposed interference issues (primarily blamed
on laptops) a few years back.
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
Yes, all airborne use is prohibited. On cell phones permanently
installed on private jets, there has to be a warning label attached to
prohibit it's use in the air. (FCC rule).
>
> So my question... what is the technical reason for restriction of cell phone
> us on commercial flights? Is this reason valid, technically? Or is it simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
>
Forcing you to use the Airphones is the least of the FAA's or the FCC's
concern.
The real reason is that the cellular phone industry does not want you
to. Their bread and butter is the ground based caller, and their
systems are not designed to work with callers that have some altitude on
the system (there are techncial deficiencies in this that I won't go
into unless you really want to know). As a matter of fact, the cellular
industry fought a company who wanted to share the spectrum
tooth-and-nail over airborne use.
Oddly, this prohibition is NOT written into the rules for the newer
wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
(800MHz) band. However, most of the carriers with these services still
discourate airborne use.
Ron Natalie
October 11th 04, 08:36 PM
C J Campbell wrote:
>
> The FCC prohibits using cellular phones on aircraft, but that applies only
> to cellular phones, few of which exist any more. Most modern 'cellular'
> phones are in fact PCS phones, which are not subject to that regulation.
Actually, they are subject to the regulation when they operate inside
the AMPS band regardless of the technology used. Many of the PCS
services fall back to AMPS. Some of the other wireless providers do
digital service in the AMPS band as well.
Ron Natalie
October 11th 04, 08:36 PM
C J Campbell wrote:
>
> The FCC prohibits using cellular phones on aircraft, but that applies only
> to cellular phones, few of which exist any more. Most modern 'cellular'
> phones are in fact PCS phones, which are not subject to that regulation.
Actually, they are subject to the regulation when they operate inside
the AMPS band regardless of the technology used. Many of the PCS
services fall back to AMPS. Some of the other wireless providers do
digital service in the AMPS band as well.
Spike
October 11th 04, 09:08 PM
PCS is a marketing term invented by cellular
carriers. Both 800 and 1900 Mhz are still
"cellular." PCS originally meant Personal
Communications Services which was a term
used even with old analog via touch-tone
before there ever existed 1900 Mhz "Cellular."
The system could not operate with just one cell because
if everyone was on the same site they would
interefere with one another. More profound
than that, but a cell-phone is still cellular
whether on so-called "PCS" or 800 Mhz
bands.
Spike
October 11th 04, 09:08 PM
PCS is a marketing term invented by cellular
carriers. Both 800 and 1900 Mhz are still
"cellular." PCS originally meant Personal
Communications Services which was a term
used even with old analog via touch-tone
before there ever existed 1900 Mhz "Cellular."
The system could not operate with just one cell because
if everyone was on the same site they would
interefere with one another. More profound
than that, but a cell-phone is still cellular
whether on so-called "PCS" or 800 Mhz
bands.
Bob Chilcoat
October 11th 04, 09:10 PM
I noticed on the evening news the other night that someone is trying to get
a modular mobile "cell tower" approved that would be installed in commercial
aircraft so that passengers can use their own mobile phones. It will be
interesting to see how the FCC and FAA handle this one.
--
Bob (Chief Pilot, White Knuckle Airways)
I don't have to like Bush and Cheney (Or Kerry, for that matter) to love
America
"Ron Natalie" > wrote in message
m...
> DaveC wrote:
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
>
> Nope. The FAA rules have not changed on this, nor have the FCC ones.
> You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
> airborne. That is an FCC rule.
>
> The FAA rule is just that the airline (i.e., the operator) must
> determine when electronic devices are safe to use. The only thing that
> has really changed is the "conventional wisdom" on the FAA's part got a
> little tighter after some supposed interference issues (primarily blamed
> on laptops) a few years back.
>
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
>
> Yes, all airborne use is prohibited. On cell phones permanently
> installed on private jets, there has to be a warning label attached to
> prohibit it's use in the air. (FCC rule).
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
> >
> Forcing you to use the Airphones is the least of the FAA's or the FCC's
> concern.
>
> The real reason is that the cellular phone industry does not want you
> to. Their bread and butter is the ground based caller, and their
> systems are not designed to work with callers that have some altitude on
> the system (there are techncial deficiencies in this that I won't go
> into unless you really want to know). As a matter of fact, the cellular
> industry fought a company who wanted to share the spectrum
> tooth-and-nail over airborne use.
>
> Oddly, this prohibition is NOT written into the rules for the newer
> wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
> (800MHz) band. However, most of the carriers with these services still
> discourate airborne use.
Bob Chilcoat
October 11th 04, 09:10 PM
I noticed on the evening news the other night that someone is trying to get
a modular mobile "cell tower" approved that would be installed in commercial
aircraft so that passengers can use their own mobile phones. It will be
interesting to see how the FCC and FAA handle this one.
--
Bob (Chief Pilot, White Knuckle Airways)
I don't have to like Bush and Cheney (Or Kerry, for that matter) to love
America
"Ron Natalie" > wrote in message
m...
> DaveC wrote:
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
>
> Nope. The FAA rules have not changed on this, nor have the FCC ones.
> You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
> airborne. That is an FCC rule.
>
> The FAA rule is just that the airline (i.e., the operator) must
> determine when electronic devices are safe to use. The only thing that
> has really changed is the "conventional wisdom" on the FAA's part got a
> little tighter after some supposed interference issues (primarily blamed
> on laptops) a few years back.
>
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
>
> Yes, all airborne use is prohibited. On cell phones permanently
> installed on private jets, there has to be a warning label attached to
> prohibit it's use in the air. (FCC rule).
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
> >
> Forcing you to use the Airphones is the least of the FAA's or the FCC's
> concern.
>
> The real reason is that the cellular phone industry does not want you
> to. Their bread and butter is the ground based caller, and their
> systems are not designed to work with callers that have some altitude on
> the system (there are techncial deficiencies in this that I won't go
> into unless you really want to know). As a matter of fact, the cellular
> industry fought a company who wanted to share the spectrum
> tooth-and-nail over airborne use.
>
> Oddly, this prohibition is NOT written into the rules for the newer
> wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
> (800MHz) band. However, most of the carriers with these services still
> discourate airborne use.
NW_PILOT
October 11th 04, 10:01 PM
"DaveC" > wrote in message
al.net...
> Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't
we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell
phone
> us on commercial flights? Is this reason valid, technically? Or is it
simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
>
> Thanks,
> --
> Please, no "Go Google this" replies. I wouldn't
> ask a question here if I hadn't done that already.
>
> DaveC
>
> This is an invalid return address
> Please reply in the news group
>
No you cannot use your phone, But you can use their phone at $3.00 a min.
NW_PILOT
October 11th 04, 10:01 PM
"DaveC" > wrote in message
al.net...
> Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't
we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell
phone
> us on commercial flights? Is this reason valid, technically? Or is it
simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
>
> Thanks,
> --
> Please, no "Go Google this" replies. I wouldn't
> ask a question here if I hadn't done that already.
>
> DaveC
>
> This is an invalid return address
> Please reply in the news group
>
No you cannot use your phone, But you can use their phone at $3.00 a min.
Teacherjh
October 11th 04, 10:24 PM
>> No you cannot use your phone, But you can use their phone at $3.00 a min.
Actually, on my last commercial flight (United) I noticed that Verizon
(cellular?) customers can use the airphone at much lower rates if they register
first. Apparantly there's a deal going.
Jose
--
(for Email, make the obvious changes in my address)
Teacherjh
October 11th 04, 10:24 PM
>> No you cannot use your phone, But you can use their phone at $3.00 a min.
Actually, on my last commercial flight (United) I noticed that Verizon
(cellular?) customers can use the airphone at much lower rates if they register
first. Apparantly there's a deal going.
Jose
--
(for Email, make the obvious changes in my address)
John Mazor
October 12th 04, 12:44 AM
"Ron Natalie" > wrote in message
m...
> DaveC wrote:
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
>
> Nope. The FAA rules have not changed on this, nor have the FCC ones.
> You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
> airborne. That is an FCC rule.
>
> The FAA rule is just that the airline (i.e., the operator) must
> determine when electronic devices are safe to use. The only thing that
> has really changed is the "conventional wisdom" on the FAA's part got a
> little tighter after some supposed interference issues (primarily blamed
> on laptops) a few years back.
>
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
>
> Yes, all airborne use is prohibited. On cell phones permanently
> installed on private jets, there has to be a warning label attached to
> prohibit it's use in the air. (FCC rule).
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
> >
> Forcing you to use the Airphones is the least of the FAA's or the FCC's
> concern.
>
> The real reason is that the cellular phone industry does not want you
> to. Their bread and butter is the ground based caller, and their
> systems are not designed to work with callers that have some altitude on
> the system (there are techncial deficiencies in this that I won't go
> into unless you really want to know). As a matter of fact, the cellular
> industry fought a company who wanted to share the spectrum
> tooth-and-nail over airborne use.
>
> Oddly, this prohibition is NOT written into the rules for the newer
> wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
> (800MHz) band. However, most of the carriers with these services still
> discourate airborne use.
Later this month an industry group is going to announce standards and an
icon that will come on to show that a device that is not in a transmit mode,
even if it is turned on for other uses.
John Mazor
October 12th 04, 12:44 AM
"Ron Natalie" > wrote in message
m...
> DaveC wrote:
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
>
> Nope. The FAA rules have not changed on this, nor have the FCC ones.
> You can't use Advanced Mobile Phone Service (i.e., traditional cellular)
> airborne. That is an FCC rule.
>
> The FAA rule is just that the airline (i.e., the operator) must
> determine when electronic devices are safe to use. The only thing that
> has really changed is the "conventional wisdom" on the FAA's part got a
> little tighter after some supposed interference issues (primarily blamed
> on laptops) a few years back.
>
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
>
> Yes, all airborne use is prohibited. On cell phones permanently
> installed on private jets, there has to be a warning label attached to
> prohibit it's use in the air. (FCC rule).
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
> >
> Forcing you to use the Airphones is the least of the FAA's or the FCC's
> concern.
>
> The real reason is that the cellular phone industry does not want you
> to. Their bread and butter is the ground based caller, and their
> systems are not designed to work with callers that have some altitude on
> the system (there are techncial deficiencies in this that I won't go
> into unless you really want to know). As a matter of fact, the cellular
> industry fought a company who wanted to share the spectrum
> tooth-and-nail over airborne use.
>
> Oddly, this prohibition is NOT written into the rules for the newer
> wireless services (PCS, NEXTEL, etc...) that operate outside the AMPS
> (800MHz) band. However, most of the carriers with these services still
> discourate airborne use.
Later this month an industry group is going to announce standards and an
icon that will come on to show that a device that is not in a transmit mode,
even if it is turned on for other uses.
C J Campbell
October 12th 04, 01:02 AM
"Spike" > wrote in message
...
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular."
Nevertheless, the FCC rule applies only to the 800 Mhz band.
C J Campbell
October 12th 04, 01:02 AM
"Spike" > wrote in message
...
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular."
Nevertheless, the FCC rule applies only to the 800 Mhz band.
Morgans
October 12th 04, 03:44 AM
"Bob Chilcoat" > wrote in message
...
> I noticed on the evening news the other night that someone is trying to
get
> a modular mobile "cell tower" approved that would be installed in
commercial
> aircraft so that passengers can use their own mobile phones. It will be
> interesting to see how the FCC and FAA handle this one.
>
> --
> Bob (Chief Pilot, White Knuckle Airways)
Still won't work. The frequency the cell in the air is on, will be hitting
dozens of towers on the ground, making them unable to use that frequency for
other users on the land.
--
Jim in NC
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.774 / Virus Database: 521 - Release Date: 10/7/2004
Morgans
October 12th 04, 03:44 AM
"Bob Chilcoat" > wrote in message
...
> I noticed on the evening news the other night that someone is trying to
get
> a modular mobile "cell tower" approved that would be installed in
commercial
> aircraft so that passengers can use their own mobile phones. It will be
> interesting to see how the FCC and FAA handle this one.
>
> --
> Bob (Chief Pilot, White Knuckle Airways)
Still won't work. The frequency the cell in the air is on, will be hitting
dozens of towers on the ground, making them unable to use that frequency for
other users on the land.
--
Jim in NC
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.774 / Virus Database: 521 - Release Date: 10/7/2004
Doug Kanter
October 12th 04, 04:10 AM
"DaveC" > wrote in message
al.net...
> Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't
we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell
phone
> us on commercial flights? Is this reason valid, technically? Or is it
simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
Oh good. Let's list all the reasons why cell phones belong in airplanes:
1) Airlines in bankrupty which (and I say this with enormous sarcasm) has NO
effect on the morale of people who should be happy, like mechanics
2) A random selection of pilots who partied way too late the night before
3) Sky marshalls who saunter aboard like what's-his-name from Miami Vice,
thereby making it perfectly clear who to strangle if you're a hijacker and
need a gun.
4) Passengers who think flying is a convenient excuse to get plastered
within 15 minutes of takeoff and mouth off to the crew.
5) People who've lived on potato chips and cheesecake since birth, but think
they shouldn't have to buy two seats to contain their lard, and end up
flowing all over your for 4 hours.
6) Air traffic control computers which are, in many cases, antiques.
7) Morons who will look right at you while you're listening to quiet music
with your eyes closed and begin telling you their life story.
8) Fools who SLAM their seats backwards within seconds of the warning lights
being turned off, and pretend they're instantly asleep?
On top of all this, you think there should be lots of cell phones in use on
airplanes? I've got news for you: Do that, and it'll be more comfortable to
take a bus through a Central American jungle with goats & pigs roaming the
aisles. I don't know how old you are, but there was actually a time when
flying was comfortable and enjoyable.
Doug Kanter
October 12th 04, 04:10 AM
"DaveC" > wrote in message
al.net...
> Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't
we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell
phone
> us on commercial flights? Is this reason valid, technically? Or is it
simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
Oh good. Let's list all the reasons why cell phones belong in airplanes:
1) Airlines in bankrupty which (and I say this with enormous sarcasm) has NO
effect on the morale of people who should be happy, like mechanics
2) A random selection of pilots who partied way too late the night before
3) Sky marshalls who saunter aboard like what's-his-name from Miami Vice,
thereby making it perfectly clear who to strangle if you're a hijacker and
need a gun.
4) Passengers who think flying is a convenient excuse to get plastered
within 15 minutes of takeoff and mouth off to the crew.
5) People who've lived on potato chips and cheesecake since birth, but think
they shouldn't have to buy two seats to contain their lard, and end up
flowing all over your for 4 hours.
6) Air traffic control computers which are, in many cases, antiques.
7) Morons who will look right at you while you're listening to quiet music
with your eyes closed and begin telling you their life story.
8) Fools who SLAM their seats backwards within seconds of the warning lights
being turned off, and pretend they're instantly asleep?
On top of all this, you think there should be lots of cell phones in use on
airplanes? I've got news for you: Do that, and it'll be more comfortable to
take a bus through a Central American jungle with goats & pigs roaming the
aisles. I don't know how old you are, but there was actually a time when
flying was comfortable and enjoyable.
G.R. Patterson III
October 12th 04, 04:13 AM
Spike wrote:
>
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular." PCS originally meant Personal
> Communications Services which was a term
> used even with old analog via touch-tone
> before there ever existed 1900 Mhz "Cellular."
> The system could not operate with just one cell because
> if everyone was on the same site they would
> interefere with one another. More profound
> than that, but a cell-phone is still cellular
> whether on so-called "PCS" or 800 Mhz
> bands.
Not according to the FCC, and they (literally) make the rules and the definitions.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
G.R. Patterson III
October 12th 04, 04:13 AM
Spike wrote:
>
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular." PCS originally meant Personal
> Communications Services which was a term
> used even with old analog via touch-tone
> before there ever existed 1900 Mhz "Cellular."
> The system could not operate with just one cell because
> if everyone was on the same site they would
> interefere with one another. More profound
> than that, but a cell-phone is still cellular
> whether on so-called "PCS" or 800 Mhz
> bands.
Not according to the FCC, and they (literally) make the rules and the definitions.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
Cub Driver
October 12th 04, 11:04 AM
On Tue, 12 Oct 2004 03:10:28 GMT, "Doug Kanter"
> wrote:
> I don't know how old you are, but there was actually a time when
>flying was comfortable and enjoyable.
And expensive!
In 1958, I left my job in Frankfurt and looked at modes of
transportation home. I got a ticket on the Holland-America line for
$278. An airplane would have been $400--one-way!
To translate into millennium dollars, multiply by ten.
all the best -- Dan Ford
email: (put Cubdriver in subject line)
Warbird's Forum www.warbirdforum.com
Piper Cub Forum www.pipercubforum.com
Viva Bush! www.vivabush.org
Cub Driver
October 12th 04, 11:04 AM
On Tue, 12 Oct 2004 03:10:28 GMT, "Doug Kanter"
> wrote:
> I don't know how old you are, but there was actually a time when
>flying was comfortable and enjoyable.
And expensive!
In 1958, I left my job in Frankfurt and looked at modes of
transportation home. I got a ticket on the Holland-America line for
$278. An airplane would have been $400--one-way!
To translate into millennium dollars, multiply by ten.
all the best -- Dan Ford
email: (put Cubdriver in subject line)
Warbird's Forum www.warbirdforum.com
Piper Cub Forum www.pipercubforum.com
Viva Bush! www.vivabush.org
Doug Kanter
October 12th 04, 12:12 PM
"Cub Driver" > wrote in message
...
> On Tue, 12 Oct 2004 03:10:28 GMT, "Doug Kanter"
> > wrote:
>
> > I don't know how old you are, but there was actually a time when
> >flying was comfortable and enjoyable.
>
> And expensive!
>
> In 1958, I left my job in Frankfurt and looked at modes of
> transportation home. I got a ticket on the Holland-America line for
> $278. An airplane would have been $400--one-way!
>
> To translate into millennium dollars, multiply by ten.
I dunno....my dad paid for it when I was 12 years old. :-) About the only
negative thing I remember was that the airlines were silly enough to serve
peas, which made for a bit of a mess on bumpy flights.
Best memory - 1987: My flight from Pittsburgh to Rochester NY was delayed by
an hour due to crazy summer weather. When we finally boarded, the pilot came
out of the cockpit and addressed the passengers. He said "Sorry about the
delay, but there were thunderstorms. They've passed, but it's still pretty
turbulent. I'll give you a choice. I can avoid 98% of the turbulence and
we'll be in Rochester around 8:30. Or, I can go through the bumps and it'll
be about 15 minutes quicker. The 2nd choice could be a little unnerving, but
nothing we're not trained for and the plane's not built for. How about a
show of hands - who wants choice A? And choice B?" Choice B won. We got home
faster. :-)
Doug Kanter
October 12th 04, 12:12 PM
"Cub Driver" > wrote in message
...
> On Tue, 12 Oct 2004 03:10:28 GMT, "Doug Kanter"
> > wrote:
>
> > I don't know how old you are, but there was actually a time when
> >flying was comfortable and enjoyable.
>
> And expensive!
>
> In 1958, I left my job in Frankfurt and looked at modes of
> transportation home. I got a ticket on the Holland-America line for
> $278. An airplane would have been $400--one-way!
>
> To translate into millennium dollars, multiply by ten.
I dunno....my dad paid for it when I was 12 years old. :-) About the only
negative thing I remember was that the airlines were silly enough to serve
peas, which made for a bit of a mess on bumpy flights.
Best memory - 1987: My flight from Pittsburgh to Rochester NY was delayed by
an hour due to crazy summer weather. When we finally boarded, the pilot came
out of the cockpit and addressed the passengers. He said "Sorry about the
delay, but there were thunderstorms. They've passed, but it's still pretty
turbulent. I'll give you a choice. I can avoid 98% of the turbulence and
we'll be in Rochester around 8:30. Or, I can go through the bumps and it'll
be about 15 minutes quicker. The 2nd choice could be a little unnerving, but
nothing we're not trained for and the plane's not built for. How about a
show of hands - who wants choice A? And choice B?" Choice B won. We got home
faster. :-)
Ron Natalie
October 12th 04, 02:55 PM
Spike wrote:
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular.
Not when you are talking about FCC rules. For regulatory purposes,
cellular specifically refers to 47 CFR 22 Subpart H which covers the
800MHz (AMPS) band. PCS is governed by 47 CFR 24.
Ron Natalie
October 12th 04, 02:55 PM
Spike wrote:
> PCS is a marketing term invented by cellular
> carriers. Both 800 and 1900 Mhz are still
> "cellular.
Not when you are talking about FCC rules. For regulatory purposes,
cellular specifically refers to 47 CFR 22 Subpart H which covers the
800MHz (AMPS) band. PCS is governed by 47 CFR 24.
Brian Case
October 12th 04, 08:44 PM
Actually it could work very well, and I have seen this proposal from
several different sources. The Idea is to install a low power cell
phone tower into the airliner.
As I understand it that signal bar you see on you Cell phone is
dictates how much power the cell phone uses to transmit. So the closer
you are to the tower the less power it uses to transmit. This is why
you phone batteries probably last longer in town than the do out in
the boondocks.
By installing the tower in the aircraft you are only a few hundred
feet from the tower (at the most). The Cell phones will get an
excellent signal from it and will drop to the lowest transmit power
setting, Thus the interference with towers on the ground should be
minimal.
I am not an expert on these, I am just repeating how it was explained
to me.
Brian
"Morgans" > wrote in message >...
> "Bob Chilcoat" > wrote in message
> ...
> > I noticed on the evening news the other night that someone is trying to
> get
> > a modular mobile "cell tower" approved that would be installed in
> commercial
> > aircraft so that passengers can use their own mobile phones. It will be
> > interesting to see how the FCC and FAA handle this one.
> >
> > --
> > Bob (Chief Pilot, White Knuckle Airways)
>
>
> Still won't work. The frequency the cell in the air is on, will be hitting
> dozens of towers on the ground, making them unable to use that frequency for
> other users on the land.
Brian Case
October 12th 04, 08:44 PM
Actually it could work very well, and I have seen this proposal from
several different sources. The Idea is to install a low power cell
phone tower into the airliner.
As I understand it that signal bar you see on you Cell phone is
dictates how much power the cell phone uses to transmit. So the closer
you are to the tower the less power it uses to transmit. This is why
you phone batteries probably last longer in town than the do out in
the boondocks.
By installing the tower in the aircraft you are only a few hundred
feet from the tower (at the most). The Cell phones will get an
excellent signal from it and will drop to the lowest transmit power
setting, Thus the interference with towers on the ground should be
minimal.
I am not an expert on these, I am just repeating how it was explained
to me.
Brian
"Morgans" > wrote in message >...
> "Bob Chilcoat" > wrote in message
> ...
> > I noticed on the evening news the other night that someone is trying to
> get
> > a modular mobile "cell tower" approved that would be installed in
> commercial
> > aircraft so that passengers can use their own mobile phones. It will be
> > interesting to see how the FCC and FAA handle this one.
> >
> > --
> > Bob (Chief Pilot, White Knuckle Airways)
>
>
> Still won't work. The frequency the cell in the air is on, will be hitting
> dozens of towers on the ground, making them unable to use that frequency for
> other users on the land.
Ron Natalie
October 12th 04, 09:13 PM
Brian Case wrote:
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
The cellular phone does use an adaptive power control (it's not tied to
the signal strength bar).
The problem is that even at mimimal power, if you're sitting close to
the window, you can be heard equally well by a large number of cells
over the system. There's nothing magic that they can do to stop this
short of rf shielding the aircraft windows somehow.
Ron Natalie
October 12th 04, 09:13 PM
Brian Case wrote:
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
The cellular phone does use an adaptive power control (it's not tied to
the signal strength bar).
The problem is that even at mimimal power, if you're sitting close to
the window, you can be heard equally well by a large number of cells
over the system. There's nothing magic that they can do to stop this
short of rf shielding the aircraft windows somehow.
Morgans
October 12th 04, 09:15 PM
"Brian Case" > wrote in message
om...
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
>
> By installing the tower in the aircraft you are only a few hundred
> feet from the tower (at the most). The Cell phones will get an
> excellent signal from it and will drop to the lowest transmit power
> setting, Thus the interference with towers on the ground should be
> minimal.
>
> I am not an expert on these, I am just repeating how it was explained
> to me.
>
> Brian
I could see the possibilities of strong enough signal not reaching the
ground to cause problems, but......
Which company (Of the multitudes) will you have to belong to, to get your
phone to work? How will the plane's system communicate with the ground? By
cell tower? <g>
--
Jim in NC
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.774 / Virus Database: 521 - Release Date: 10/7/2004
Morgans
October 12th 04, 09:15 PM
"Brian Case" > wrote in message
om...
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
>
> By installing the tower in the aircraft you are only a few hundred
> feet from the tower (at the most). The Cell phones will get an
> excellent signal from it and will drop to the lowest transmit power
> setting, Thus the interference with towers on the ground should be
> minimal.
>
> I am not an expert on these, I am just repeating how it was explained
> to me.
>
> Brian
I could see the possibilities of strong enough signal not reaching the
ground to cause problems, but......
Which company (Of the multitudes) will you have to belong to, to get your
phone to work? How will the plane's system communicate with the ground? By
cell tower? <g>
--
Jim in NC
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.774 / Virus Database: 521 - Release Date: 10/7/2004
whoever
October 12th 04, 10:12 PM
The only thing that I see wrong with this is that the cell "tower" needs
to connect to the wired phone system. We know that it can't be
hardwired, that would be one hell of a long cable! So, as the "tower"
needs to transmit and receive (transceiver) from other transceivers on
the ground that are hardwired to the phone system. You can put the
ground transceivers on a different frequency pairs, but that's a whole
new world wide system!
Brian Case wrote:
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
>
> By installing the tower in the aircraft you are only a few hundred
> feet from the tower (at the most). The Cell phones will get an
> excellent signal from it and will drop to the lowest transmit power
> setting, Thus the interference with towers on the ground should be
> minimal.
>
> I am not an expert on these, I am just repeating how it was explained
> to me.
>
> Brian
>
> "Morgans" > wrote in message >...
>
>>"Bob Chilcoat" > wrote in message
...
>>
>>>I noticed on the evening news the other night that someone is trying to
>>
>> get
>>
>>>a modular mobile "cell tower" approved that would be installed in
>>
>> commercial
>>
>>>aircraft so that passengers can use their own mobile phones. It will be
>>>interesting to see how the FCC and FAA handle this one.
>>>
>>>--
>>>Bob (Chief Pilot, White Knuckle Airways)
>>
>>
>>Still won't work. The frequency the cell in the air is on, will be hitting
>>dozens of towers on the ground, making them unable to use that frequency for
>>other users on the land.
whoever
October 12th 04, 10:12 PM
The only thing that I see wrong with this is that the cell "tower" needs
to connect to the wired phone system. We know that it can't be
hardwired, that would be one hell of a long cable! So, as the "tower"
needs to transmit and receive (transceiver) from other transceivers on
the ground that are hardwired to the phone system. You can put the
ground transceivers on a different frequency pairs, but that's a whole
new world wide system!
Brian Case wrote:
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
>
> As I understand it that signal bar you see on you Cell phone is
> dictates how much power the cell phone uses to transmit. So the closer
> you are to the tower the less power it uses to transmit. This is why
> you phone batteries probably last longer in town than the do out in
> the boondocks.
>
> By installing the tower in the aircraft you are only a few hundred
> feet from the tower (at the most). The Cell phones will get an
> excellent signal from it and will drop to the lowest transmit power
> setting, Thus the interference with towers on the ground should be
> minimal.
>
> I am not an expert on these, I am just repeating how it was explained
> to me.
>
> Brian
>
> "Morgans" > wrote in message >...
>
>>"Bob Chilcoat" > wrote in message
...
>>
>>>I noticed on the evening news the other night that someone is trying to
>>
>> get
>>
>>>a modular mobile "cell tower" approved that would be installed in
>>
>> commercial
>>
>>>aircraft so that passengers can use their own mobile phones. It will be
>>>interesting to see how the FCC and FAA handle this one.
>>>
>>>--
>>>Bob (Chief Pilot, White Knuckle Airways)
>>
>>
>>Still won't work. The frequency the cell in the air is on, will be hitting
>>dozens of towers on the ground, making them unable to use that frequency for
>>other users on the land.
Pooh Bear
October 13th 04, 01:49 AM
DaveC wrote:
> Cell phone usage is restricted on all domestic commercial flights by the FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell phone
> us on commercial flights? Is this reason valid, technically? Or is it simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
The origin of the ban was due to concerns about cellphone transmissions
interfering with onboard avionics. This is more likely to be a concern with older
a/c. There is no hard data that I know of that substantiates the concern. There
is some anecdotal evidence of interference though.
As another poster has mentioned, cellphones don't work well at altitude.
Both Boeing and Airbus are now working on systems to enable airborne use of
cellphones.
Graham
Pooh Bear
October 13th 04, 01:49 AM
DaveC wrote:
> Cell phone usage is restricted on all domestic commercial flights by the FAA,
> so the flight attendant keeps telling me.
>
> I seem to recall that this wasn't so, early in cellular history. Weren't we
> able to use cell phones on flights, long ago?
>
> Is cell phone usage also restricted on private jets, etc. for similar
> reasons?
>
> So my question... what is the technical reason for restriction of cell phone
> us on commercial flights? Is this reason valid, technically? Or is it simply
> an excuse to force anyone who needs to make a call to use the airline's
> on-board phones (and pay their outrageous rates)?
The origin of the ban was due to concerns about cellphone transmissions
interfering with onboard avionics. This is more likely to be a concern with older
a/c. There is no hard data that I know of that substantiates the concern. There
is some anecdotal evidence of interference though.
As another poster has mentioned, cellphones don't work well at altitude.
Both Boeing and Airbus are now working on systems to enable airborne use of
cellphones.
Graham
Pooh Bear
October 13th 04, 02:06 AM
Joseph wrote:
> On Mon, 11 Oct 2004 11:38:10 -0700, DaveC > wrote:
>
> >Cell phone usage is restricted on all domestic commercial flights by the FAA,
> >so the flight attendant keeps telling me.
> >
> >I seem to recall that this wasn't so, early in cellular history. Weren't we
> >able to use cell phones on flights, long ago?
> >
> >Is cell phone usage also restricted on private jets, etc. for similar
> >reasons?
>
> Restriction of cell phones from planes is not due to the interference
> to avionics, but is more of concern that it will interfere with
> land-based communications. When you're up at a height and you attempt
> to use your phone you are hitting a whole lot of cell sites as once
> and if lots of people did this it would make a real mess of land-based
> cellular service. So it's more of an FCC mandate than it is of the
> FAA.
I thought that the base station antenna patterns pretty much ignore any signal
greater than a few ( maybe ~10 ) degrees above the horizon.
Graham
Pooh Bear
October 13th 04, 02:06 AM
Joseph wrote:
> On Mon, 11 Oct 2004 11:38:10 -0700, DaveC > wrote:
>
> >Cell phone usage is restricted on all domestic commercial flights by the FAA,
> >so the flight attendant keeps telling me.
> >
> >I seem to recall that this wasn't so, early in cellular history. Weren't we
> >able to use cell phones on flights, long ago?
> >
> >Is cell phone usage also restricted on private jets, etc. for similar
> >reasons?
>
> Restriction of cell phones from planes is not due to the interference
> to avionics, but is more of concern that it will interfere with
> land-based communications. When you're up at a height and you attempt
> to use your phone you are hitting a whole lot of cell sites as once
> and if lots of people did this it would make a real mess of land-based
> cellular service. So it's more of an FCC mandate than it is of the
> FAA.
I thought that the base station antenna patterns pretty much ignore any signal
greater than a few ( maybe ~10 ) degrees above the horizon.
Graham
G.R. Patterson III
October 13th 04, 03:41 AM
Brian Case wrote:
>
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
Well, it would work well, but not if they actually used the cellular frequencies
(AMPS). If they installed a PCS processor in the plane, modern PCS phones would
communicate with it and not fall back on the AMPS frequencies.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
G.R. Patterson III
October 13th 04, 03:41 AM
Brian Case wrote:
>
> Actually it could work very well, and I have seen this proposal from
> several different sources. The Idea is to install a low power cell
> phone tower into the airliner.
Well, it would work well, but not if they actually used the cellular frequencies
(AMPS). If they installed a PCS processor in the plane, modern PCS phones would
communicate with it and not fall back on the AMPS frequencies.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
G.R. Patterson III
October 13th 04, 04:00 AM
Pooh Bear wrote:
>
> The origin of the ban was due to concerns about cellphone transmissions
> interfering with onboard avionics.
The origin of the ban on cellphone usage at altitude was to prevent phones from
hitting multiple receivers which were using the same frequency. The designers of the
AMPS system counted on being able to have many "cells" use the same frequency set
because they were far apart. Put the phone in the air, and several of these stations
would receive the transmissions from the call.
The origin of the FAA ban on electronic devices is as you say, but it is not unique
to cell phones.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
G.R. Patterson III
October 13th 04, 04:00 AM
Pooh Bear wrote:
>
> The origin of the ban was due to concerns about cellphone transmissions
> interfering with onboard avionics.
The origin of the ban on cellphone usage at altitude was to prevent phones from
hitting multiple receivers which were using the same frequency. The designers of the
AMPS system counted on being able to have many "cells" use the same frequency set
because they were far apart. Put the phone in the air, and several of these stations
would receive the transmissions from the call.
The origin of the FAA ban on electronic devices is as you say, but it is not unique
to cell phones.
George Patterson
If a man gets into a fight 3,000 miles away from home, he *had* to have
been looking for it.
Doug Kanter
October 13th 04, 06:25 AM
"Pooh Bear" > wrote in message
...
> DaveC wrote:
>
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
> >
> > I seem to recall that this wasn't so, early in cellular history. Weren't
we
> > able to use cell phones on flights, long ago?
> >
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
>
> The origin of the ban was due to concerns about cellphone transmissions
> interfering with onboard avionics. This is more likely to be a concern
with older
> a/c. There is no hard data that I know of that substantiates the concern.
There
> is some anecdotal evidence of interference though.
Everyone's got a conspiracy theory. Here's another: The ban on cellular
phones is kept alive by the book publishing industry. Some in the evil cabal
may actually have the best intentions: Trying to get cell phone addicts to
shut the phuque up and try reading something for a change.
Doug Kanter
October 13th 04, 06:25 AM
"Pooh Bear" > wrote in message
...
> DaveC wrote:
>
> > Cell phone usage is restricted on all domestic commercial flights by the
FAA,
> > so the flight attendant keeps telling me.
> >
> > I seem to recall that this wasn't so, early in cellular history. Weren't
we
> > able to use cell phones on flights, long ago?
> >
> > Is cell phone usage also restricted on private jets, etc. for similar
> > reasons?
> >
> > So my question... what is the technical reason for restriction of cell
phone
> > us on commercial flights? Is this reason valid, technically? Or is it
simply
> > an excuse to force anyone who needs to make a call to use the airline's
> > on-board phones (and pay their outrageous rates)?
>
> The origin of the ban was due to concerns about cellphone transmissions
> interfering with onboard avionics. This is more likely to be a concern
with older
> a/c. There is no hard data that I know of that substantiates the concern.
There
> is some anecdotal evidence of interference though.
Everyone's got a conspiracy theory. Here's another: The ban on cellular
phones is kept alive by the book publishing industry. Some in the evil cabal
may actually have the best intentions: Trying to get cell phone addicts to
shut the phuque up and try reading something for a change.
Ron Natalie
October 13th 04, 05:13 PM
Pooh Bear wrote:
> The origin of the ban was due to concerns about cellphone transmissions
> interfering with onboard avionics. This is more likely to be a concern with older
> a/c. There is no hard data that I know of that substantiates the concern. There
> is some anecdotal evidence of interference though.
Sorry, there are two issues. The FAA has it's own concerns about ANY
electronic devices. There's not hard and fast info on a lot of these
devices and the FAA has gotten more restrictive over time. However, the
AMPS regs specifically prohibit it without specifying the reason. It would
seem unlikely that a prohibition against airborn use however has anything
to do with air navigation because NOTHING ELSE the FCC regulates really
addresses that issue.
>
> As another poster has mentioned, cellphones don't work well at altitude.
Wrong. AMPS / Analog cell phones, the ones the regulatory applies to, work
just fine from altitude. Actually too well. That was demonstrated on 9/11.
However some of the digital (PCS, for example) services, don't work at all
airborne (but they are not prohibited by regulation either).
Ron Natalie
October 13th 04, 05:16 PM
G.R. Patterson III wrote:
>
> Brian Case wrote:
>
>>Actually it could work very well, and I have seen this proposal from
>>several different sources. The Idea is to install a low power cell
>>phone tower into the airliner.
>
>
> Well, it would work well, but not if they actually used the cellular frequencies
> (AMPS). If they installed a PCS processor in the plane, modern PCS phones would
> communicate with it and not fall back on the AMPS frequencies.
>
It would be a real can of worms. If everybody had a GSM phone in the
US it might be doable. But every carrier these days tends to market
a multimode phone that bounces between CDMA, old style TDMA, analog AMPS,
GSM, and a couple of proprietary schemes like iDEN.
It's going to have to be a "only [insert carrier here]" phones work onboard
United's flights.
Teacherjh
October 13th 04, 11:36 PM
>> It would be a real can of worms
The real answer is for the cell carriers to make deals with Airphone, so that
one could use Airphone units already installed on the airplane, and be billed
by ones cell carrier, at ones local rates.
Jose
--
(for Email, make the obvious changes in my address)
Klein
October 14th 04, 06:02 AM
On Wed, 13 Oct 2004 12:16:13 -0400, Ron Natalie >
wrote:
>G.R. Patterson III wrote:
>>
>> Brian Case wrote:
>>
>>>Actually it could work very well, and I have seen this proposal from
>>>several different sources. The Idea is to install a low power cell
>>>phone tower into the airliner.
>>
>>
>> Well, it would work well, but not if they actually used the cellular frequencies
>> (AMPS). If they installed a PCS processor in the plane, modern PCS phones would
>> communicate with it and not fall back on the AMPS frequencies.
>>
>It would be a real can of worms. If everybody had a GSM phone in the
>US it might be doable. But every carrier these days tends to market
>a multimode phone that bounces between CDMA, old style TDMA, analog AMPS,
>GSM, and a couple of proprietary schemes like iDEN.
Given that it's no big deal these days to make a multi-mode,
multi-band phone, why do you think it'd be so tough to make a
multi-mode, multi-band base station in the A/C? Certainly would be
easier if all phones were CDMA, of course. ;-)
Klein
Klein
October 14th 04, 06:07 AM
On Wed, 13 Oct 2004 12:13:36 -0400, Ron Natalie >
wrote:
>Pooh Bear wrote:
>
>> The origin of the ban was due to concerns about cellphone transmissions
>> interfering with onboard avionics. This is more likely to be a concern with older
>> a/c. There is no hard data that I know of that substantiates the concern. There
>> is some anecdotal evidence of interference though.
>
>Sorry, there are two issues. The FAA has it's own concerns about ANY
>electronic devices. There's not hard and fast info on a lot of these
>devices and the FAA has gotten more restrictive over time. However, the
>AMPS regs specifically prohibit it without specifying the reason. It would
>seem unlikely that a prohibition against airborn use however has anything
>to do with air navigation because NOTHING ELSE the FCC regulates really
>addresses that issue.
>
>>
>> As another poster has mentioned, cellphones don't work well at altitude.
>
>Wrong. AMPS / Analog cell phones, the ones the regulatory applies to, work
>just fine from altitude. Actually too well. That was demonstrated on 9/11.
>However some of the digital (PCS, for example) services, don't work at all
>airborne (but they are not prohibited by regulation either).
Actually, PCS and 800 MHz digital CDMA work just fine airborne
provided there are only a few CDMA base stations near the aircraft,
but flying over a city it is hopeless. The problem is that in CDMA
systems many base stations transmit on the same wideband channel,
interfering with each other. The phone will never attempt to transmit
because it never succeeds in acquiring the system.
Klein
Ron Natalie
October 14th 04, 04:08 PM
Teacherjh wrote:
>>>It would be a real can of worms
>
>
> The real answer is for the cell carriers to make deals with Airphone, so that
> one could use Airphone units already installed on the airplane, and be billed
> by ones cell carrier, at ones local rates.
>
That's sort of what Verizon has done.
Ron Natalie
October 14th 04, 04:09 PM
Klein wrote:
> Given that it's no big deal these days to make a multi-mode,
> multi-band phone, why do you think it'd be so tough to make a
> multi-mode, multi-band base station in the A/C? Certainly would be
> easier if all phones were CDMA, of course. ;-)
>
That would be fine if there were some industry cooperation with the
people planning on offering the airborne service. But the plethora
of incompatible modulation schemes now sort of demonstrates that this
level of cooperation isn't likely .
Teacherjh
October 14th 04, 04:53 PM
>>
> The real answer is for the cell carriers to make deals with Airphone, so that
That's sort of what Verizon has done.
<<
Right. But if every carrier did it, we'd be all set.
Jose
--
(for Email, make the obvious changes in my address)
vBulletin® v3.6.4, Copyright ©2000-2025, Jelsoft Enterprises Ltd.