kum.bips
kum.bips
Branch Unspecified
25 Jul 2009

Mobile Detector

guys does anyone have any idea about design of mobile detector. i need the design for doing a mini project...

if anyone has any idea plz help mee....
Munguti

Munguti

Branch Unspecified
27 Jul 2009
A mobile detector which will detect mobile phones or have i misunderstood your question.
kum.bips

kum.bips

Branch Unspecified
27 Jul 2009
Munguti
A mobile detector which will detect mobile phones or have i misunderstood your question.
yes you are right a mobile detector which will detect when the mobile is being used to call or recieve call or send or receive sms to avoid disturbance in public places like hospitals,offices, labs, temples,etc...
if you have any circuit for that then plz send it to me
Munguti

Munguti

Branch Unspecified
29 Jul 2009
I have no circuit but from my knowledge of telecomms i presume that you should build a circuit to detect the uplink frequencies of the mobile system architecture in question. You do know the frequencies if you don't you can google them.
kashish0711

kashish0711

Branch Unspecified
29 Jul 2009
Well I don't know how to do it but well, mobile phones have electro-magnetic flux flowing around them when they are receiving/making a call or sms, if you just wind a small coil and amplify the signal and attach it to an LED, whenever you will take that LED system near the phone in about a range 1 or 2 feet max, the LED will glow up. You might use the electricity produced to make audio signals also, but well havnt thought much on that. :\
Munguti

Munguti

Branch Unspecified
29 Jul 2009
Have you also noted that when you are getting a call and you are near a radio there is interference on the transmission. Maybe you could use this to your advantage, say build an ultra sensitive radio.
kashish0711

kashish0711

Branch Unspecified
29 Jul 2009
yeah that's the radio frequencies creating disturbances but these only work when the phone is making/receiving a call or sms, and the project should be able to catch the phone in non-operating condition only. 😕
jhbalaji

jhbalaji

Branch Unspecified
29 Jul 2009
Therefore have a read here Cell Phone Detector

and the circuit will be
[​IMG]
harrystone

harrystone

Branch Unspecified
18 Aug 2009
I found a device on the market, but it's not a detector. If you use that device, it will shield your cell phone signal, you will not receive a call or call a number out.
kum.bips

kum.bips

Branch Unspecified
18 Aug 2009
harrystone
I found a device on the market, but it's not a detector. If you use that device, it will shield your cell phone signal, you will not receive a call or call a number out.
can iget the circuit design of that jammer
piyushh

piyushh

Branch Unspecified
18 Apr 2010
kum.bips
can iget the circuit design of that jammer
i guess for that you dont need to have any circuit..simply you put your cell in a metal box, the EM signals cannot penetrate through metal
newlife

newlife

Branch Unspecified
19 Apr 2010
naaz

naaz

Branch Unspecified
20 Apr 2010
hiii i too need this details and complete notes and circuit diagram on this can u help me admin
sankar3

sankar3

Branch Unspecified
19 Jun 2010
hi friends, which filter is used in cell after recieving the signals.. ie resistors, capacitors are not work as proper in Ghz frequency range then which is used for it

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