Guess it works only on analog (AMPS) cell phones ...

On 11 Feb 2002 at 8:29, Alexandre Domingos F. Souza wrote:

>
>         I made it. It was just simple! A modified cellular phone, one TCM3105
>         (yep, that nice modem used in BAYCOMM), a GPS module and a 8751
>         processor to control everything. The entire circuit was simpler than
>         stole a candy from a child. The 8751 took the NMEA output of the GPS
>         (which is nothing more than current-level RS232), processed it to get
>         latitude, longitude and speed, encoded it with the TCM3105 and sent thru
>         the cell phone. In an event of the car being stolen, or the owner
>         sequestred (is it the right english word? Or would it be "abducted"? Ah,
>         I think "Rape" is the right verb...Oh, 08:30am in a sunday, lemme
>         sleep!), the car would open up the cellular connection, and start
>         transmiting the position, along with audio - if desired - of inside the
>         car and the "porta malas" (brazilian friends, help me with this word, I
>         think is "truck"). Of course, the reverse would also be possible - you
>         could dial in the system in the car, and get it's position at any time.
>         Since there was a password for that - which only the owner would know -
>         there was no danger of his wife "spying" what the hell he was doing at
>         02:00a out of his home :o)
>
---
Marcelo Puhl
Mensa Brasil member
http://www.mensa.com.br

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