This thread is for investigating if we can use the dialling signal sent out by the mobile cell phone locally.
For Example : Suppoe we enter 4 digit number say 2311 on our mobile and press dial button on the phone, our cell phone sends out some signal to the nearest base station tower.
Since this 4 digit code is probably meaning less from the point of veiw of the service provider, it responds by saying " Number dialled by you is incorrect. Please check the number."
Now the question is, can we ourselves, locally detect this transmission which was sent out by our cell phone and make some use of it ? There are many possible uses of this facility.
May be we have to design and build a local base station of our own which will do this job. May be we will also need a suitable antena to receive this weak signal from the cell phone.
But is it possible ? Certainly it is.
This process is being carried out by millions of cell phone towers acrosss the world. Can we use their ready made proven hardware designs , 'as it is' or in a miniature small scale level for our personal private use ?
Please suggest circuits or methods to do this.
For Example : Suppoe we enter 4 digit number say 2311 on our mobile and press dial button on the phone, our cell phone sends out some signal to the nearest base station tower.
Since this 4 digit code is probably meaning less from the point of veiw of the service provider, it responds by saying " Number dialled by you is incorrect. Please check the number."
Now the question is, can we ourselves, locally detect this transmission which was sent out by our cell phone and make some use of it ? There are many possible uses of this facility.
May be we have to design and build a local base station of our own which will do this job. May be we will also need a suitable antena to receive this weak signal from the cell phone.
But is it possible ? Certainly it is.
This process is being carried out by millions of cell phone towers acrosss the world. Can we use their ready made proven hardware designs , 'as it is' or in a miniature small scale level for our personal private use ?
Please suggest circuits or methods to do this.
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