The operation of a cell phone jammer

[Junaid02]

Hello All
I am junaid. I nneed Some help regarding the cell phone jammer. Whats the theory and how this jammer is going to opeate so Can any one guide me to
some specific sites or provide me some stuff regarding that
Thx
Regards

 

[ulaska]

Cell Jammer

i dont know this issue but i think the theory is, generating a strong ,dominant signal in same frequency spectrum. so the cell phone frequencies can be suppressed. is it right?

edit:

 

[Junaid02]

Re: Cell Jammer

Ulaska u got it right but i need some more theory so that i can work my project out

 

[ahmad_abdulghany]

Cell Jammer

I hope that this will help you:




**broken link removed**

Regards,
Ahmad,

 

[ivar4ever]

Re: Cell Jammer

first know whether it is legal in your country to use mobile jammers or not. in many places it is not legal

 

[xakker]

Re: Cell Jammer

this is simple
1. generate a saw tooth
2. give it to a VCO in frq range of 900 and 1800 Mhz
3. Feed it to a power amplifier
4. transmit via antenna

 

[ahmad_abdulghany]

Re: Cell Jammer

this is simple
1. generate a saw tooth
2. give it to a VCO in frq range of 900 and 1800 Mhz
3. Feed it to a power amplifier
4. transmit via antenna

It's easy to say, but not that easy while implementing!

 

[mhtplsh]

Re: Cell Jammer

do u hv access to such high frequency equipment to test?
If yes, then hv u got some experince to work at such high frequencies?
It is not easy to make one. Better buy.

 

[vamanan]

Cell Jammer

Is this type of jammers legal ?. But I saw such jammers in many hospitals.

 

[mdcl]

Re: Cell Jammer

Hai, It not easy to make a cell phone jammer for CDMA/GSM and DCS (Tri band)
You must have solid experience in the RF circuits and need equipment like spectrum analyzer, VSWR meter, Impedance analyzer etc. Dont worry, i have very good quality Tri band cell jammer circuit with assembled tested kit with all technical details. The effective distance have tested upo to 30 mtrs.If you are interested please contact me @ 09884515763, mdclrf@yahoo.com
Thanking you
with regards
a.v.jenson.