Author |
Message |
Topic: CELLULAR CAR ALARM |
jumpjack
Replies: 5
Views: 11227
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Forum: Vehicle Locators & Person or Pet Tracking Posted: Wed Feb 13, 2008 2:14 pm Subject: CELLULAR CAR ALARM |
I'm planning to "recycle" my old cellphone right in this way!
It's capable of bluetooth connection and SMS sending, so I've just to hide the phone and a BT GPS recevier in the car, continuously power ... |
Topic: stealth tracking |
jumpjack
Replies: 5
Views: 10144
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Forum: Vehicle Locators & Person or Pet Tracking Posted: Wed Feb 13, 2008 2:08 pm Subject: Re: stealth tracking |
Looking for a PocketPC app that would use the phone GPS to:
1) Log location every x minutes
2) Preferably support being triggered by SMS
3) Has to be stealth, runs in the background and at system ... |
Topic: GPS: how does it work? |
jumpjack
Replies: 7
Views: 2791
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Forum: Beginners GPS Lounge Posted: Fri Nov 04, 2005 8:25 pm Subject: GPS: how does it work? |
I think I understood (eventually!!! 8O )
1) Four satellites send each one a "data package"; this datapackage contains the time of its sending;
2) Receiver adjust its clock;
3) Satellites send an ... |
Topic: GPS: how does it work? |
jumpjack
Replies: 7
Views: 2791
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Forum: Beginners GPS Lounge Posted: Thu Nov 03, 2005 7:59 pm Subject: GPS: how does it work? |
Suggest you look here http://electronics.howstuffworks.com/gps2.htm
Great site, thanks! |
Topic: GPS: how does it work? |
jumpjack
Replies: 7
Views: 2791
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Forum: Beginners GPS Lounge Posted: Thu Nov 03, 2005 12:06 pm Subject: GPS: how does it work? |
Thanks.
1. All satellites have clocks set to exactly the same time
ok
2. All satellites know their exact position from data sent to them from the systems controllers
Quite strange... Looks l ... |
Topic: GPS: how does it work? |
jumpjack
Replies: 7
Views: 2791
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Forum: Beginners GPS Lounge Posted: Thu Nov 03, 2005 11:18 am Subject: GPS: how does it work? |
Ok, very newbie question...
I know a GPS receiver receives signals from several satellites 36000 km above our heads, but I'd like to know a bit more...
I heard that a GPS receiver require ... |
Topic: Which Antenna to fit Motorola A1000? |
jumpjack
Replies: 11
Views: 3033
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Forum: Beginners GPS Lounge Posted: Thu Nov 03, 2005 10:56 am Subject: Which Antenna to fit Motorola A1000? |
I got this reply from motocoder.com:
External antenna runs at a voltage of 2.8-3.0 VDC, draws <15mA current and the connector is mini-MCX (MMCX). Sometimes it is difficult to obtain an MMCX conn ... |
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