Description

Passive GSM 5.1 Monitoring System

Completely Passive Interception of:



Voice

SMS



Range of approximately 



*******0 meters on the forward channel



*0 km on the reverse channel.



4 Hardware Components



MPU or Main Processing Unit

Receiver Box

5.1 Decoder Box

Antenna



MPU or Main Processing Unit



tandard Lunchbox style computer.  Typically Acme brand.   Standard Configuration is *2 channels, which allows for **2 calls at the same time.  

The MPU is where you scan your surrounding BTS

The MPU is where you choose /set which BTS to monitor

The MPU is also where all data is stored and processed.



Receiver    

The Receiver can be tuned for either of the below sets:

**0/***0 mhz



OR



**0/***0 mhz



Decoder Speed    



5.1 Decoder decodes the KC of the phone.

Decoders have different speeds.

The highest speed currently decodes at 0.7 seconds.  This is the highest cost decoder as well.  For speeds like *0 seconds, and *0 seconds, the price of the decoder will decrease.

>>>  Several units can all be connected to the same decoder if you choose to.