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Autor: Amir Taaki
Data:  
Para: unsystem
Assunto: Re: [unSYSTEM] Detecting Mobile Phone signals on Linux
So wireless operates on 2500 ghz (or 5000 ghz) but cellphone GSM
operates on much lower frequency (or larger wavelength), hence travels
greater distance.

I'm seeing each country has a different GSM frequency, some countries
have something like:

  United Kingdom    GSM 900/1800


What does that mean? Do cellphones use both frequencies or hop between them?

What's the typical range of a directional antenna (say 23 dBm) with line
of sight?

I found also this really good tutorial on the internet:

http://www.rtl-sdr.com/rtl-sdr-tutorial-analyzing-gsm-with-airprobe-and-wireshark/

linux rocks!

On 11/08/2014 01:31 AM, Amir Taaki wrote:
> Hi!
>
> How can I see mobile phone signals on Linux? I have a yagi and omni
> antennas for wifi signals... Can I also use this for cell phone signals?
>
> I am interested to learn more. Especially about triangulation of signals
> for detecting cell phone locations.
>
> Thanks.
> (the previous topic was very informative and instructive... thank you
> everyone who responded. The EFF link was very good and the open hardware
> stuff is cool too)
>
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