"Spehro Pefhany" wrote in message
...
On Fri, 19 Mar 2004 01:08:01 GMT, the renowned KLM
wrote:

On a different discussion point, picture the recent Spanish train
bombings (10 set off.) Had the train installed cellphone signal
blocking equipment most of those bombs would probably not have been
set off.

From the fact that few of them went off in the station, where they
would have been far more effective, one may conclude that they were
triggered by simple timers.

Best regards,
Spehro Pefhany


Yes, that is correct - at least that's what was said on the news channels
here in the UK. The Spanish bombs were triggered by mobile phones set on
alarm at 7:39am IIRC - the phones didn't even have to have SIM cards in
them. No signal jamming equipment could have prevented them from going off.

cheers,
Costas

In article ,
Costas Vlachos wrote:

Yes, that is correct - at least that's what was said on the news channels
here in the UK. The Spanish bombs were triggered by mobile phones set on
alarm at 7:39am IIRC - the phones didn't even have to have SIM cards in
them. No signal jamming equipment could have prevented them from going off.

Ah - the modern equivalent of the classic alarm-clock timing
mechanism. Modern digital watches would work about as well.

As to the idea of jamming cellphone frequencies: even if physically
practical, and even if the government would authorize widespread
distribution of devices which jammed a licensed radio service
(doubtful IMO since the cellphone companies paid $$$ for their
licenses and would doubtless fight it in court), it would only move
the problem elsewhere. There are far too many radio frequency bands,
and far too much commonly-available equipment which could be modified
to allow for remote detonation control over moderate distances. Garage
door openers with rolling-code security, portable radios of all sorts,
etc. could all be incorporated into a scheme for remote- controlled
mass murder by those whose inventiveness and skills outweighs their
ethics and humanity.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

"Costas Vlachos" wrote in message ...

Yes, that is correct - at least that's what was said on the news channels
here in the UK. The Spanish bombs were triggered by mobile phones set on
alarm at 7:39am IIRC - the phones didn't even have to have SIM cards in
them. No signal jamming equipment could have prevented them from going off.

cheers,
Costas
I ma not sure abou that other phone, in a backpack, it rang, and that
is
how they found it.
So it MUST have had a sim card.
When I heard that news, I knew they would get the guys in hours.
One look at that sim, and a look at the telco's logs, and you have the
whole network:-)
It proves these guys are really dumies in that stuff.
Nevertheless very very dangerous.
JP

Jan Panteltje says...

it rang, and that is how they found it.
So it MUST have had a sim card.

My cellphone rings without any simm card. All I have to
do is to set the alarm clock function.



--
Guy Macon, Electronics Engineer & Project Manager for hire.
Remember Doc Brown from the _Back to the Future_ movies? Do you
have an "impossible" engineering project that only someone like
Doc Brown can solve? My resume is at http://www.guymacon.com/

Guy Macon http://www.guymacon.com wrote in message ...
Jan Panteltje says...

My cellphone rings without any simm card. All I have to
do is to set the alarm clock function.
Yes, that works here too.
Even when the thing is off!
But what I ment is that I got the impresion it was really ringing,
like they dialed it, and for that you need a SIM.
Of cause if you had the phone, a look in the flash would reveal
much of what they had done (likely some card was in it for testing).
Probably we will not hear details for obvious reasons.
But again, do not blame it on cellphones, if these were not
available they would use something else I am sure.
In fact the phone gave them away!

We will have to live with the danger.
I missed an IRA bomb by one minute years ago in London,
just clearly remember the thought 'shall I go have a cup of coffee
in that Wimpy (coffee bar), or go back to the office (tube across it)'.
We had to go for a production to Italy next day or so, and had a lot to do
(was working in London in that time).
So I took the tube back to the office, whan I arrived there it was on the
news that a IRA bomb was in that coffee shop.
So, dangers surround us all the time, why we move, and how we move, our timing,
be concious.
JP