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ZL3AI > APRDIG 23.07.06 02:40l 179 Lines 6367 Bytes #999 (0) @ WW
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From: ZL3AI@ZL2BAU.#87.NZL.OC
To : APRDIG@WW
Today's Topics:
1. Re: vehicle laptop mount for APRS rig (Stan - N0YXV)
2. RE: vehicle laptop mount for APRS rig (Tourge, Ryan R.)
3. Re: vehicle laptop mount for APRS rig (Jan T. Pharo)
4. Fwd: Galileo hacked and out'd (Robert Bruninga)
5. Re: Fwd: Galileo hacked and out'd (Steve Dimse)
6. Re: Fwd: Galileo hacked and out'd (Sean Jewett)
7. Re: Fwd: Galileo hacked and out'd (Steve Dimse)
----------------------------------------------------------------------
Message: 1
Date: Wed, 19 Jul 2006 16:44:00 -0500
From: Stan - N0YXV <n0yxv_at_gihams.org>
Subject: Re: [aprssig] vehicle laptop mount for APRS rig
Quoting "Jan T. Pharo" <la2bba_at_jpharo.net>:
>"John Habbinga" <kc5zrq_at_gmail.com>, Tue, 18 Jul 2006 16:28:22 -0500:
>
>>When using the bean-bag pillow desk, I hit the brakes hard, and I mean
>>really hard, and the laptop stayed put.
>
>What would happen when your car is stopped from 60 m/h to zero in half
>a yard? Or hit hard from right in a crossing?
Newtons laws of Physics would kick in. An object at rest tends to stay at
rest and an object in motion tends to stay in motion with the same speed
and in the same direction unless acted upon by an unbalanced force. I
always find it funny when people don't want to wear seat belts in my car. I
always tell them they can ride on top of the car. After the usually, "WHAT
DO YOU MEAN.....I'd go flying if you stopped" I say well whats so different
about the inside of the car? If you'd fly off the top of your car in a stop
you'll certainly move inside your car when you stop. Only difference is
that you have a strange thing called a windshield that you get to go
through first before you hit the street. That's of course if your not
wearing the "unbalanced force" called a seat belt.
I think (I'm talking to me too) that since we as Ham Radio Operators tend
to put lots of gadgets in our cars we all need to remember Newtons law
before throwing anything into are cars. Sorry I'll get off my soap box now.
:-)
------------------------------
Message: 2
Date: Wed, 19 Jul 2006 18:57:30 -0400
From: "Tourge, Ryan R." <Ryan.Tourge_at_sheriff.co.warren.ny.us>
Subject: RE: [aprssig] vehicle laptop mount for APRS rig
While where on the topic of projectiles... Remember to plan your
installation out of the way of airbag deployment.
------------------------------
Message: 3
Date: Thu, 20 Jul 2006 07:22:12 +0200
From: "Jan T. Pharo" <la2bba_at_jpharo.net>
Subject: Re: [aprssig] vehicle laptop mount for APRS rig
Stan - N0YXV <n0yxv_at_gihams.org>, Wed, 19 Jul 2006 16:44:00 -0500:
(Jan)
>>What would happen when your car is stopped from 60 m/h to zero in half
>>a yard? Or hit hard from right in a crossing?
>
>Newtons laws of Physics would kick in.
Yes, they would. So my question was merely a rhetoric one, leading to
a conclusion (a bit off topic, but very related to the vehicle laptop
mount thread):
Fix anything harder than a soft cushion (including amateur radio
equipment) so it won't move, and so it couldn't harm the driver or any
passenger if they are forcefully being moved around inside the car.
--
73 de Jan, LA2BBA
Hvaler, Norway
------------------------------
Message: 4
Date: Thu, 20 Jul 2006 09:30:39 -0400
From: "Robert Bruninga" <bruninga_at_usna.edu>
Subject: [aprssig] Fwd: Galileo hacked and out'd
The European equivalent to GPS (Galileo) was intended to be a
pay-for-service system, instead of a free service like GPS. Didn't take
long for hackers to get around that....
http://www.avweb.com/eletter/archives/avflash/684-full.html#192727
WB4APR
------------------------------
Message: 5
Date: Thu, 20 Jul 2006 10:00:20 -0400
From: Steve Dimse <steve_at_dimse.com>
Subject: Re: [aprssig] Fwd: Galileo hacked and out'd
On Jul 20, 2006, at 9:30 AM, Robert Bruninga wrote:
>The European equivalent to GPS (Galileo) was intended to be a
>pay-for-service system, instead of a free service like GPS.
>Didn't take long for hackers to get around that....
>
>http://www.avweb.com/eletter/archives/avflash/684-full.html#192727
It isn't that simple. This is a test-bed satellite. The timing data on the
cracked signal is not encrypted, it was a matter of determining the spread
spectrum sequence. The sequence was something that was planned for
dissemination, the crackers simply beat ESA to the punch.
In the functional system, the timing data will be encrypted. I do not know
the details (or if they have been published) but you can bet it will not be
something easily cracked, and furthermore, any attempt to do so would run
afoul of the DCMA.
Steve K4HG
------------------------------
Message: 6
Date: Thu, 20 Jul 2006 08:23:02 -0500 (CDT)
From: Sean Jewett <sean_at_rimboy.com>
Subject: Re: [aprssig] Fwd: Galileo hacked and out'd
On Thu, 20 Jul 2006, Steve Dimse wrote:
>In the functional system, the timing data will be encrypted. I do not know
>the details (or if they have been published) but you can bet it will not be
>something easily cracked, and furthermore, any attempt to do so would run
>afoul of the DCMA.
That's not stopped hackers in other countries seeing as the DMCA is a US
law (though the US has lobbied other countries to pass DMCA type laws). And
if this is the ESA, would they really try to use US law?
Sean...
------------------------------
Message: 7
Date: Thu, 20 Jul 2006 10:48:59 -0400
From: Steve Dimse <steve_at_dimse.com>
Subject: Re: [aprssig] Fwd: Galileo hacked and out'd
On Jul 20, 2006, at 9:23 AM, Sean Jewett wrote:
>That's not stopped hackers in other countries seeing as the DMCA is
>a US law (though the US has lobbied other countries to pass DMCA
>type laws). And if this is the ESA, would they really try to use US
>law?
The spreading code was cracked in the US, you can bet the EU would pressure
the US to prosecute the crackers of their encryption if they lived in the
US. Many other countries has DCMA type laws. And, as I say, the production
encryption may very well be so secure that no one short of the NSA has a
realistic chance to succeed.
Regardless, my point was that nothing significant actually occurred with
this "cracking" in terms of the future of Galileo.
Steve
------------------------------
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End of aprssig Digest, Vol 25, Issue 20
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