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create cell phone rhino imitation

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How about a Pic 16f628 with DTMF chip plugged

into cell phone headset(mic and earplug).

Pic would read present position from gps

bus and send tones to mic input of cell phone.

The other persons pic would listen to earplug

from their cellphone and DTMF chip would decode

tones and put lat/log on gps bus and hopefully

create active waypoint(rhino imitation with longer

range,perhaps nextel talkie-talkie feature).

This would let you use your favorite gps and many

people carry a cell phone anyway.


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Nextel is already selling a Motorola handset with GPS built in. Some fleet owners are using it for tracking vehicles. Your idea sounds pretty good though, and probably cheaper.


McKenna Family

Watsonville CA

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I actually own the Nextel I58sr the ruggedisted version of the I85 I like that you could use the gps on your computer thats built into the phone for LIVE tracking which i do use but if its not plugged into anything you got to keep pressing the refresh button which is ok and it is accurate within 5 feet thats just depends where you are and how many sataliees your locked onto get a nextel phone for the gps because you can send the data to another phone and stuff




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