Can someone locate me using my cell phone number?

[cvfd1399 0]

When we get fire calls on our alpha pagers the C.A.D system automatically puts in the location of the nearest tower to the callers phone.

[Lindsey 0]

Hmm...so maybe it can happen, but in Arkansas it doesn't.... Imagine that.

Peace~
Lindsey

--
A conservative is just a liberal who's been mugged. A liberal is just a conservative who's been to jail

[billvon 3,111]

>A) Sure you can, once you lock on you hold that freq.

Most CDMA phones in a given cell use the same frequency. You cannot lock onto one by a frequency since they don't use unique frequencies.

>and go chasing after it, hoping to catch it before they hung up.

Two problems with that.

1) Since all cellphones in a sector use the same freqency, you couldn't be sure if you were closing in on him or someone else.

2.) Since CDMA uses dynamic power control, he may well have his power output drop off rapidly as he approaches the cell. If you were headed towards him, but saw his signal decline, what would you assume?


>D) I am not sure why you say noise.

The pseudorandom spread-spectrum signal that CDMA cellphones put out is indistinguishable from noise. To be specific, it's a 1.2 MHz wide chunk of noise; all cellphones in a given sector use the same 1.2 MHz slice. We call it a bart's-head since that's what it looks like on a spectrum analyzer.

[gmanpilot 0]

Yes, we can locate you anytime. As a matter of fact, we are watching you right now.....

_________________________________________
-There's always free cheese in a mouse trap.

[champu 1]

I agree with billvon on this one. You can't track digital phones effectively. In most urban areas you're going to have hundreds or thousands of phones all operating on essentially the same frequency, talking to the same tower, and all adjusting their power anywhere from 10 to 600mW at a very high rate to optimize signal quality/battery life (when your phone has one bar on the signal meter, it's most likely chewing up its battery pretty bad)

Part of my senior design project involves interfacing with a GSM phone to contact police and notify them of an emergency via a recorded message. I had a nice long talk with the local police department about tracking down cellphones. Currenlty all but impossible, the next revision of GSM phones will have special provisions made to allow police to locate a given phone to around 50m without the use of GPS, but even this will require access to the backend of the infrastructure.

[skipro101 0]

well you might want to make sure google doesnt have it.


Go to www.google.com and type in a phone number


try this one

3306996856

no spaces or other words

up comes Name, Adress, etc etc.

[cvfd1399 0]

Ok we must be taking about different types of systems. The phones we scanned and played with are in the 800-825 range, and you could hear the conversation clearly. You say that the signals in the given frequency are "noise". We heard voices I mean conversations about cheating on husbands and people checking voice mail ect. So the noise you talk of is sound that was converted by the cell phone into non-understandable digital data packets transmitted in bursts to the tower. What the hell kind of system were we listening to straight analog? It's weird b/c the conversations we heard would break up digitally when the caller had a bad signal. You know the sound like they are in a bath tub, that clear but chopped up sound. Unlike some that only got static sounding, but still could be heard. We just about beat this to death guys lol

[billvon 3,111]

>The phones we scanned and played with are in the 800-825 range,
> and you could hear the conversation clearly.

Those are AMPS phones, phones with analog FM radios. I agree, they're pretty easy to track. Fixed power output, narrowband FM signal. A lot of phones nowadays are dual-mode, and will revert to AMPS mode if they are out of range or the digital cell has reached capacity.

[cvfd1399 0]

Ok cool thanks good to know what it is now. Sorry I was mislead about other type. Nice chatting