North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: SkyTel 2Way pagers DOWN all US
On Wed, May 20, 1998 at 02:44:42AM -0400, John Fraizer - Administrator wrote: > >Interesting. Of course, we know from the OJ saga that Cellphones can be > >located well enough to find a moving vehicle... > > Anyone who thinks they can hide or have a private conversation for that > matter and owns a cellular phone is sadly mistaken. The fact of the matter > is that it is possible to send commands to the phone from the MTSO and > cause it to turn on the hands-free mic and transmit on channel xxx at a > power level of yyy with a SAT tone of zzz. It is then trivial to put one > of the scanning receivers in each of the cell sites in the area surrounding > the LKA of the phone into receive on that channel, voting S/N on the SAT > tone to get the best audio from the best receiver and piping the audio to a > test jack on the switch which has a recorder/speaker/whatever connected. > > While we're at it, since we know you're on transmitting on channel XXX, it > is trivial to DF you based on foreign-carrier-detect alarms alone within > about 1000 yards. Beyond that, anyone with the most antiquated DF > equipment could find you in minutes. > > Of course, I've never done this. Especially not with an EMX-2500. And > most definitely not in Charlotte, NC while working for the B carrier there. > > Still, very big-brotherish. The fix for that is to turn the frigging phone OFF unless you're using it for a conversation. If you ARE using it for a conversation, treat it as a party line on which you can be heard - because it is - unless your MTSO supports encrypted transmission (some phones can do this - does ANY MTSO support it? I've yet to find one that does). -- -- Karl Denninger ([email protected])| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost
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