Better not open your door or have someone else open theirs next to yu then.
That dome light switch might get you.
"Dave Shrader" wrote in message
news:Xu36c.33004$po.292953@attbi_s52...
So, it is possible that pressing the PTT or the ON/OFF switch causes the
necessary spark. Remember the Apollo ground fire. A switch/spark caused
an oxygen explosion.

"Ken Taylor" wrote:
[snip]
It's a bit of a stretch to think that cell-phones are a problem, whereas the
car driving off next to you, with a set of spark plugs going for their
lives, is not. Hmmmm.

Quite. Not only that, but a petrol station I used to live near had an
in-store bakery.


Tim
--
Love is a travelator.

In rec.radio.amateur.antenna,

( I suppose this is on RRAA because cell phones have antennas )

sci.electronics.design,sci.electronics.basics, Jim Thompson
wrote:

I was struck by a thought when I heard the latest Palestinian
terrorist trick is to send a kid through the border with a back-pack
bomb triggered by a cell phone....

Call phones have become the trigger of choice for terrorist bombs.

The Israelis should get a telemarketer's speed dialer and constantly
dial away... boom... boom... boom...

This might already be illegal there (not that that would stop a
government). I've heard that various parts of Europe have much
stronger privacy laws than the US, so there's little or no
telemarketing.

ROTFLMAO!

Of course, in the USA, one could put the cell number on the
national DO-NOT-CALL list, then only an "illegal" telemarketer would
trigger the bomb.

Bombers might figure ways around this (especially if they search
Usenet), such as a cellphone answering circuit and a "dee tee em eff"
decoding circuit. I wouldn't want to spell it out for them...

...Jim Thompson

-----
http://mindspring.com/~benbradley

On Wed, 17 Mar 2004 13:08:33 -0700, Jim Thompson
wrote:

I was struck by a thought when I heard the latest Palestinian
terrorist trick is to send a kid through the border with a back-pack
bomb triggered by a cell phone....

The Israelis should get a telemarketer's speed dialer and constantly
dial away... boom... boom... boom...

ROTFLMAO!

...Jim Thompson

The terrorist will just make 'em more sophisticated.
Like once you dialup the cellphone you have to enter
a N digit code followed by the * key before the bomb
detonates...123456789*...BOOM!!!





Remove "HeadFromButt", before replying by email.

IIRC, the Apollo capsule wire insulation was FEP, and was ignited when the
power conductor it insulated was mechanically pinched and shorted to ground.
It overheated enough from fault current to ignite before the breaker
tripped.

Kapton tape was blamed in the Swissair 400(?) cockpit fire and crash in
Newfoundland(?) a few years back.

Gasoline vapor fuel fires were ignited by early pagers and first generation
cell phones which used tiny universal motors with eccentric weights as
silent ring annunciators. Find one of those old beasts and try running that
motor in a flammable environment.

The technical basis of this is covered in a text: "Intrinsic Safety" by
Redding, published by Mc Graw Hill.

--

Crazy George
Remove N O and S P A M imbedded in return address
"DarkMatter" wrote in message
...
On Wed, 17 Mar 2004 21:33:43 GMT, Dave Shrader
Gave us:


So, it is possible that pressing the PTT or the ON/OFF switch causes the
necessary spark.

Both in handheld radio transceivers, and cell phones, there are NO
switches that pass any power level that causes a spark to exhibit upon
contact or release.

Sheesh.

Remember the Apollo ground fire.

It was a pure oxy environment. There was, as a rule nothing
flammable on board. The problem was that materials were not tested
for their flammability in such an oxy rich environ. The kapton tape
is what was set afire by the spark, and that fire grew ferociously in
the oxygen. The oxygen was the oxidizer, not what burned.

A switch/spark caused
an oxygen explosion.

Are you sure you aren't just pulling that one out of you ass as
well? I was taught that it was the spark caused by a dropped wrench,
and that tape is what burned. An explosion would have blown the craft
open from the inside. That did not happen.

One would think that all the switches on Apollo were already gas
tight.

On Wed, 17 Mar 2004 13:08:33 -0700, Jim Thompson wrote:

I was struck by a thought when I heard the latest Palestinian
terrorist trick is to send a kid through the border with a back-pack
bomb triggered by a cell phone....

The Israelis should get a telemarketer's speed dialer and constantly
dial away... boom... boom... boom...

ROTFLMAO!

...Jim Thompson

Had the liberals not f'd everything up, this would've been a common
counter-terror measure. You place radio transmitters at sensitive
locations to blow up car bombs before they got close enough to do
damage. The theory is that if the tango pusses out, another tango
remote detonates the bomb, so all bombs have a radio failsafe.
--
Best Regards,
Mike

On Wed, 17 Mar 2004 16:35:02 -0700, Mark Fergerson wrote:

Jim Thompson wrote:

I was struck by a thought when I heard the latest Palestinian
terrorist trick is to send a kid through the border with a back-pack
bomb triggered by a cell phone....

The Israelis should get a telemarketer's speed dialer and constantly
dial away... boom... boom... boom...

If they could figure out from whom they're buying all
them pre-paid cellphones (in order to generate the number
lists), it could work. Just keep it running 24/7 with a
"Sorry, wrong number" message in case an innocent (or
unfinished bomb) answers.

I figure eventually they'll run out of suicide-bomb
volunteers. Might as well help if it can be done without
blowing anyone else up.

Mark L. Fergerson

Do you all think that tangos are dumb enough to trigger the bomb
with the ringer or would the detonator answer first and listen for a
DTMF sequence. Hmmm? Achmed the bomb maker gets a wrong number just
as he's connecting the thing.
--
Best Regards,
Mike

On Thu, 18 Mar 2004 00:09:30 GMT, Roger Gt wrote:

"Paul Burridge" wrote
: Jim Thompson wrote:
:
:I was struck by a thought when I heard the latest Palestinian
:terrorist trick is to send a kid through the border with a
back-pack
:bomb triggered by a cell phone....
:
:The Israelis should get a telemarketer's speed dialer and
constantly
:dial away... boom... boom... boom...
:
:ROTFLMAO!
:
: Yes, I'm rolling on the floor laughing at all these deaths, too,
as
: I'm sure we all are.

Huh?
He seemed to be laughing at the lame Idea! I also thought it
funny that anyone would try something which would almost totally
wipe out the cellular phone service for the entire country...

does a 200 station phone room with auto-dialers all calling one
state wipe out POTs? WTH are *you* talking about?

All
to provide a SMALL measure of confidence that no one had a bomb
attached to a phone. Like it would even work!
WTH are you referring to? GAL!


--
Best Regards,
Mike

On 17 Mar 2004 12:02:15 -0800, John Michael Williams wrote:

Claims that people have started fires by using
their cell phone while refueling a car apparently
are false: See
http://www.snopes.com/autos/hazards/gasvapor.asp
and other sites.

There was discussion of this and bad electric fuel pump designs last
year, but I don't recall anyone testing it out.

snip

So, I think sliding over on a car seat, and thus generating a
possible static charge, would be more likely to ignite gasoline
vapor than talking on a cell phone while refueling.

It is more likely and there's a gas station here that has a memo to
that effect (static - mainly in winter) posted where the customers
can *not* see it, duh! No signs on the pumps... The memo says you
should shock yourself on the car befor going to the pump. No one
thought about the vapor from the car on the other side of the
island.

However, it
would be useful for someone to repeat this kind of test with an
actual cell phone, as opposed to a CB radio. The wires should
be shorter, for one thing . . ..

I'm cross posting to an antenna group, looking for criticism.

John

John Michael Williams


--
Best Regards,
Mike

On Wed, 17 Mar 2004 19:16:45 -0800, DarkMatter wrote:

On Thu, 18 Mar 2004 10:02:37 +1300, "Ken Taylor"
Gave us:

snipped previous

It's a bit of a stretch to think that cell-phones are a problem, whereas the
car driving off next to you, with a set of spark plugs going for their
lives, is not. Hmmmm.



Yes, I agree. At 40kV these days too, and sure... none of that
closed system leaks anywhere.... sure. It is ten orders of
magnitude more dangerous than any handheld (or ear held) transmitter
is to flammable liquid vapors.

One should turn one's engine off whenever not using the car, let
alone at fuel pump islands. Always!

The old adage that it costs more to restart an engine than to leave
it running is bull**** today. Fuel injected (or throttle body)cars do
not suffer the idle mixture swings or flooding risk of old carbureted
engines. Unless you are in a very very cold place, turn your friggin'
engine off when you aren't driving the friggin' car!

The guy next to you with the dangling plug wire arcing away, though.
Make me more determined to have fuel delivered to a home tank.

I got yelled at for leaving the engine running at a deisel pump
once. Some people just don't know how hard t is to ignite the stuff.

--
Best Regards,
Mike