09:57

Simple Mobile Phone Jammer Circuit Diagram

Funny life    122 comments

Description
                 Circuit showing a mobile phone jammer.Here i have used a fm transistor for making this circuit.Mobile phones are working in 450  MHz  frequency .Here the transmitter generate almost equal to 450 MHz  frequency there for the mobile phone does not identify the original signal but the signal range is very week so this circuit working in only 100 m range .This circuit working in only 450 Mhz .Do not give more than 3 V



Part List

Component No: Value  Usage
R1 100R  Emitter loading
R2 39k   Base Biasing
C115 pf  Frequency
 Generating
C24.7pf  Feedback
C3 4.7pf  Feedback
C4102pf  Noise Reduce
C5 1MFCoupling
C6 2.2pf  Coupling
C7    103pf    Decoupling 
Q1 BF 494  Amplification
L1 22nH Frequency
 Generating

Applications

* FM Transmission

* TV Transmission

* Remote Controlled Toy

Related Posts
COMMENT!

122 comments:

  1. Unknown13 July 2013 at 10:41

    Thanks, Good explanation. Keep it up.

    upcoming sony phones

    ReplyDelete
  2. Farhan Ahmad1 August 2013 at 16:33

    this circuit works ??? if not working in my case , then what to do for troubleshooting???

    ReplyDelete
  3. Unknown10 August 2013 at 03:35

    thanks i have a doubt.what is the number of antina???plz say ........

    ReplyDelete
    Replies
    1. Funny life10 August 2013 at 12:20

      Analog antina / switch,SPDT,1.8V~5.5V,3 Ohm,TSOP-6

      Delete
    2. Unknown21 August 2013 at 08:13

      Thanks Saifullah and pls i have another one doubt what is the value of resistor 100R .plz say ... and advance thanks

      Delete
  4. Funny life22 August 2013 at 01:39

    well mani its my pleasur . European way of writing 100 ohm..
    They place the letters R , K ,or M where the decimal point goes.
    For instance

    2K2 = 2.2 Kohm
    100R = 100 ohm
    1M2 = 1.2 Mohm

    R = ohms
    K = kilohms
    M = Megohms

    ReplyDelete
    Replies
    1. Unknown22 August 2013 at 08:31

      nice explanation Saifullah and once again thanks for ur info.its more useful for me .keep it up........

      Delete
  5. Funny life22 August 2013 at 11:13

    well com mani

    ReplyDelete
  6. Unknown25 August 2013 at 08:48

    hey thanks then i want to design electronic circuit so plz suggest me for how to design thanks

    ReplyDelete
  7. Unknown28 August 2013 at 08:14

    What is the metal of the coil ?

    ReplyDelete
  8. Funny life28 August 2013 at 10:23

    You can use copper or silver metal

    ReplyDelete
  9. Unknown7 September 2013 at 03:29

    pls snt me the part no of atena

    ReplyDelete
  10. Funny life7 September 2013 at 11:56

    don't understand your q plz explain

    ReplyDelete
  11. Unknown8 September 2013 at 00:26

    hey u said antina tsop-6 package isn't but i cant find out the model so send the part number of the antena or send the detail description about antena pls i make ur project it is success so i want to transmit and check the signal so plz

    ReplyDelete
  12. Funny life8 September 2013 at 09:37

    Dear mani part number is DG2001 The most important part of any transmitter is the antenna, so a suitable antenna should be selected

    ReplyDelete
  13. varma13 September 2013 at 20:18

    can u suggest what antena should be used to generate a frequency >800MHZ

    ReplyDelete
  14. Unknown14 September 2013 at 04:38

    thanks saifullah keep it up

    ReplyDelete
  15. Funny life14 September 2013 at 06:19

    Hi varma ! Yes i suggest you, you should be used yagi antenna to generat a frequency 800 Mhz or 1900 MHz, but not both.

    ReplyDelete
  16. Funny life14 September 2013 at 06:20

    welcome mani its my pleasure

    ReplyDelete
  17. Unknown18 September 2013 at 05:43

    222nh is available in market or we have to make it

    ReplyDelete
  18. Funny life18 September 2013 at 11:21

    Yes 22nh is available in market

    ReplyDelete
  19. Unknown18 September 2013 at 23:15

    it is my first project related to antina so can you please tell me any real life example where this antina is used which you have mentioned above....

    ReplyDelete
  20. Safdar Ali19 September 2013 at 02:30

    Great design. I appreciate your effort. Thanks for sharing. cep telefonun

    ReplyDelete
  21. Funny life19 September 2013 at 08:24

    If you wanna detail about yagi antenna cotact here store, located at 2827 Live Oak St, Dallas, Texas 75204 - (214) 774-2588 or toll free (888) 713-1243.
    214-744-2588 CST - M-F
    888-713-1243 Toll Free

    ReplyDelete
  22. Unknown29 September 2013 at 12:17

    am from india can u help me out

    ReplyDelete
  23. Funny life30 September 2013 at 20:20

    yes Mayur Tell us your problem

    ReplyDelete
  24. U K9 October 2013 at 06:35

    Hello Saifullah..., Thanks for sharing, I'm using f =1/2*3.141(sqrt L*C) to calculate the frequency, but I'm getting 277Mhz, How do i generate a frequency of 900Mhz for the GSM JAMMER?Also what will be the output when simulated?..M xpecting Ur reply..Thanks.

    ReplyDelete
  25. Funny life9 October 2013 at 20:24

    Hi Mr. UK

    Saifullah is out of country please wait few days

    ReplyDelete
  26. Funny life9 October 2013 at 20:43

    We suggest you u can using this formula F= 1/ (2*pi*sqrt (L*C)).

    ReplyDelete
  27. U K10 October 2013 at 07:47

    Oooooo.....h!,I've used this formula and getting 277Mhz from the calculation,but i needed 900Mhz, and also my simulation output(19.357) is far below the calculated value, what do i do now plss.. thnks in anticipation of an answer.....

    ReplyDelete
  28. U K14 October 2013 at 10:47

    Hello....M having some difficulties in the simulation of this circuit, please how do i measure the frequency signal generated, would be grateful if U show the detail of the connections.. Thanks

    ReplyDelete
  29. Funny life16 October 2013 at 05:12

    A function generator has a frequency range and we can get varying amplitude from its main output. We can verify its frequency and wave shapes by applying its output to oscilloscope.
    Frequency & Time Period Measurement

    Connect the signal to be measured to CH1 / CH2. Also switch the channel.
    Set the volts per division knod and time per division knob to obtain a normal waveform.
    Keep the VAR SWEEP control to CAL.
    Using POS control, adjust the references at the centre of horizontal and vertical line.
    Measure the Horizontal distance between two points. Multiply this by the Time/Div control and magnification: Time = Horizontal divisions X Time / Div (X (1/10) if X10 is used)
    Frequency measurements are made by measuring the time taken by one cycle, Frequency1/Time period.

    ReplyDelete
  30. U K19 October 2013 at 00:23

    Hello....m appreciate Ur patience, M trying to run the simulation of the circuit using a proteus isis but it's not workn, i guess i must be making a mistake in smthngs may be,please can U help? thanks

    ReplyDelete
  31. U K19 October 2013 at 00:25

    would really appreciate a detail guide n description of how to go abt the simulation with proteus isis..thnks

    ReplyDelete
    Replies
    1. emi20 April 2014 at 11:16

      i also fece this problem plzz give me its solution.... 2days r left for submisstion of my university project kindle reply

      Delete
  32. Funny life19 October 2013 at 07:44

    Hi Uk
    Uk Tell us your email address we can send a other project of mobile phone jammer go to contact us form

    ReplyDelete
  33. Funny life19 October 2013 at 08:02

    The Proteus Design Suite is wholly unique in offering the ability to co-simulate both high and low-level micro-controller code in the context of a mixed-mode SPICE circuit simulation.

    ReplyDelete
  34. Funny life19 October 2013 at 08:10

    See this video http://www.youtube.com/watch?v=vyBMI91AaxY

    and thought this

    ReplyDelete
  35. U K21 October 2013 at 02:24

    Hello Saifullah...M have sent the email.thanks

    ReplyDelete
  36. U K21 October 2013 at 08:50

    Hello Saifullah...M have sent the email, Have U received it?...thanks

    ReplyDelete
  37. Funny life21 October 2013 at 10:11

    UK
    Yes i have received Your mail

    Best Regards

    ReplyDelete
  38. U K22 October 2013 at 18:03

    Alright, eagerly waiting for the response..many thanks

    ReplyDelete
  39. Funny life23 October 2013 at 10:10

    Kindly wait Few Days we will send you a best jammer project

    ReplyDelete
  40. U K27 October 2013 at 15:34

    Alright, M waiting, thanks

    ReplyDelete
  41. U K28 October 2013 at 05:56

    Alright, I'm still waiting

    ReplyDelete
  42. Anonymous28 October 2013 at 23:46

    thanks provide internal working about mobile phone jammer in noida
    is most important knowledge

    ReplyDelete
  43. Unknown4 November 2013 at 22:32

    can i use this circuit will block cell phone usage

    ReplyDelete
  44. Unknown4 November 2013 at 22:35

    thanks,
    can i use this circuit will be ban cell phone usage

    ReplyDelete
  45. Funny life5 November 2013 at 10:16

    You will try This Life is Hard so Try and again try

    ReplyDelete
  46. Unknown7 November 2013 at 06:46

    if we are intending do the same project in india..then which type of antenna should v use?

    ReplyDelete
  47. Funny life19 November 2013 at 22:48

    I think like alluminiyao mix steel coted

    ReplyDelete
  48. Unknown25 November 2013 at 08:45

    will same circuit works in mumbai,,india???

    ReplyDelete
  49. Funny life26 November 2013 at 09:21

    I think it work! but not trusted

    ReplyDelete
  50. Rasnu1 December 2013 at 00:10

    Hi This is Rasnu.
    i had many ideas but i can't do any project.

    ReplyDelete
  51. Funny life3 December 2013 at 09:08

    Y ? Rasnu Try again Try and get target

    ReplyDelete
  52. Unknown7 December 2013 at 21:54

    i hv made the circuit but isnt workin m from india can u help me with the project ?
    thanks in advance

    ReplyDelete
  53. Funny life8 December 2013 at 20:12

    Sushmita you will send you email via our contact us form we send a other project

    ReplyDelete
  54. Maria sussan10 December 2013 at 09:42

    i'm from india.what all changes i have to make in this circuit to achieve the target?

    ReplyDelete
  55. Funny life10 December 2013 at 21:39

    This comment has been removed by the author.

    ReplyDelete
  56. Funny life10 December 2013 at 21:41

    you will send your email address via our contact us form we send an other project

    ReplyDelete
  57. Unknown12 December 2013 at 19:42

    Same circuit wii be work at chennai,india

    ReplyDelete
  58. Anonymous14 December 2013 at 20:26

    Hi... Can you send me brief description of this circuit.. my e-mail id is asifraza0765@yahoo.com

    ReplyDelete
  59. Unknown18 December 2013 at 02:26

    how many turn copper wire for this circuit?

    ReplyDelete
  60. Funny life18 December 2013 at 20:18

    6 turns of copper wire

    ReplyDelete
  61. Unknown18 December 2013 at 23:46

    hi, Im going to make this circuit as my project, is it work properly or facing errors.. if any correction needs ????

    ReplyDelete
  62. Unknown19 December 2013 at 22:43

    i am an indian i want to know the changes made in this circuit.. if y want my may id:as.win.th36@gmail.com..
    pls ia m waiting fr ur rply n tnks n advance

    ReplyDelete
  63. Funny life20 December 2013 at 09:14

    Aswinth raj
    I think Same circuit will be work at india

    ReplyDelete
  64. Funny life20 December 2013 at 10:05

    All india visit this and enjoy mobilephon jamer a http://circuitsstream.blogspot.com/2013/12/a-gift-mobile-phone-jammer-circuit.html

    ReplyDelete
  65. Unknown9 January 2014 at 08:33

    Hi i'm not able to get 22nH in my place. Can I make it? If yes how can I make it.. Please tell me in detail.

    ReplyDelete
  66. Unknown9 January 2014 at 08:50

    22nH inductor is not available in my place. can I make this myself? If yes how can I make it? Please tell me in detail

    ReplyDelete
  67. Funny life12 January 2014 at 22:39

    Jhoh Samuel where u from ?

    ReplyDelete
  68. Unknown13 January 2014 at 20:30

    Hi my name is athul.i'm frm kerala,india. I intrested in it to do it as my mini project. Can you please snd me all details and pcb layouts. My submission date is near.i didnt get components of other jammer ckt.i got bf494.so i think i can get other part too.pls help me.thank u.

    ReplyDelete
  69. Unknown13 January 2014 at 20:32

    Pls snd me other simple circuit if u hav.i need a better project.

    ReplyDelete
  70. Unknown15 January 2014 at 19:27

    I'm from Tamil Nadu, India

    ReplyDelete
  71. Funny life15 January 2014 at 23:01

    Athul Tv You will send your e mail adress via our contact us form we can send a simple and complete project for u

    Best regards

    ReplyDelete
  72. Funny life15 January 2014 at 23:07

    John Samuel you will get 22nh on internet buy this inductor easily

    ReplyDelete
  73. Unknown16 January 2014 at 00:27

    can u plz tell me the website where i can get this?

    ReplyDelete
  74. Funny life16 January 2014 at 09:22

    This one http://www.aliexpress.com/w/wholesale-0603-22nh-2%2525-inductor-.html
    or
    http://uk.rs-online.com/web/p/wire-wound-surface-mount-inductors/7242848/

    ReplyDelete
  75. Ghost27 January 2014 at 06:44

    this project rerly work s aswm

    ReplyDelete
  76. Unknown27 January 2014 at 22:01

    how the projects works it jam both CDMA GSM mobile signal and whats is final cost

    ReplyDelete
  77. Unknown30 January 2014 at 21:38

    need coil specifications,as its gage,number of turns ,distance betewen the adjesent turns,

    ReplyDelete
  78. Unknown30 January 2014 at 21:40

    hai,i am unni from kerala .i need a detailed design for each components for mini project

    ReplyDelete
  79. Funny life3 February 2014 at 09:08

    Pawan GSM/CDMA/3G signals have a frequency of 800-900MHz, 1800-1900MHz and 2100-2200MHz (last one is 3G). VHF band uses 300-300MHz, and UHF band is a wide band with 300-3000MHz frequencies but as a rule microphones are not using high frequencies for their work. UHF/VHF jammer blocks only the most used parts of those bands - 140-180MHz from VHF and 450-480MHz from UHF.
    As you can see, all you need to do is to make sure you have low-frequency microphone that would not be jammed by your cell phone jammer. And if someday you would need to jam both mobile phones and low-frequency band, you still can do it and its final cost $50 to $100

    ReplyDelete
  80. Unknown4 February 2014 at 06:52

    tanks,but i need gage of the copper wire and distance between the adjecent turns.

    ReplyDelete
  81. Unknown7 February 2014 at 05:22

    hi sir!
    i am working on this circuit for past 3 months. i am from india i need to block signals from 900 to 1800 to make it work both for GSM and CDMA.. please help and is this yagi antenna relly nesasary

    ReplyDelete
  82. Unknown8 February 2014 at 04:02

    will u kindly snd me the equivalent circuit that work in india....my mail id-jishnu.jish93@gmail.com

    ReplyDelete
  83. Funny life8 February 2014 at 09:29

    Hi
    aswinth raj and jishnu NP I will send you a project i hope that work in india but wait few days because i am bzy at other project

    Best Regards

    ReplyDelete
  84. Unknown11 February 2014 at 21:14

    Can u please send circuit for 900 mhz mobile phone jammer. my email id is johnsonnakram@gmail.com

    ReplyDelete
  85. Funny life13 February 2014 at 13:07

    After having huge requested of Johnson John, Jishnu Np, aswinth raj and others. we are going to start dual band mobile jammer for GSM 900 and GSM 1800 Full and final project see this project and enjoy you self

    ReplyDelete
  86. Khan18 February 2014 at 09:34

    can we use here a simple antenna from
    a radio or a walkie talkie set

    ReplyDelete
  87. Funny life18 February 2014 at 10:12

    Nothing

    ReplyDelete
  88. Khan20 February 2014 at 07:04

    so which type of antenna i should buy?
    can u give me it's model num? or any other particular specification?

    ReplyDelete
  89. Unknown21 February 2014 at 10:45

    sir, i want to make mobile phone jammer in collage class room so pls give me advise how can design jammer and what to do possible , pls sir help me this most important in my life becoz this my frist project

    ReplyDelete
  90. Unknown21 February 2014 at 10:52

    sir,i want to make mobile phone jammer at collage class room but sir i dont know design this project pls help me and this project vary important in my life pls sir help me how can be possible i make this project....

    ReplyDelete
  91. Funny life22 February 2014 at 09:36

    Akash
    you can try this project dual band mobile jammer for GSM 900 and GSM 1800 Full and final project see this project and enjoy you self

    ReplyDelete
    Replies
    1. Unknown17 April 2014 at 02:25

      SIR!
      i still cant get it. i am doing a project in which jammer makes only a littel, i cant followhttp://circuitsstream.blogspot.in/2014/02/the-final-cell-phone-jammer-circuit.html this full link to make a jammer for asia. moreover i cant understand why that jammer circuit alone looks complicated where as the one in this page looks much simple.
      PLEASE HELP;
      i need a simple circuit of jammer that could work in india
      anyway thank u for ur effort in making that new page i relly got some good ideas

      Delete
    2. Unknown17 April 2014 at 02:27

      SIR!
      i still cant get it. i am doing a project in which jammer makes only a littel, i cant followhttp://circuitsstream.blogspot.in/2014/02/the-final-cell-phone-jammer-circuit.html this full link to make a jammer for asia. moreover i cant understand why that jammer circuit alone looks complicated where as the one in this page looks much simple.
      PLEASE HELP;
      i need a simple circuit of jammer that could work in india
      anyway thank u for ur effort in making that new page i relly got some good ideas

      Delete
  92. Unknown26 February 2014 at 09:13

    hi i m amar from india....i need the circuit of mobile jammar which can produce high frequency i.e. frequency of present mobiles.. plzzzz plzzz help me....

    ReplyDelete
  93. Unknown26 February 2014 at 09:16

    i need a mobile jammar circuit which can produce frequency equivalent to present mobiles we get in market....which can jam all mobiles....plzzz help ....i need suugestion ...

    ReplyDelete
  94. Unknown7 March 2014 at 03:03


    Thanks for the sharing of such information. we will pass it on to our readers. This is a great reading. Thanking you.
    Mobile Phone Jammer

    ReplyDelete
  95. Unknown11 March 2014 at 05:18

    plz send me this project(mobile jammer) .which based on microcontroller(embedded system).my id is ullah359@gmail.com

    ReplyDelete
  96. emi28 March 2014 at 01:53

    hi , i want ur help plz suggest me .what is the number of antina to generate 450 mhz frequence generate

    ReplyDelete
  97. Unknown31 March 2014 at 17:37

    hii sir
    i m from india. i want to make a signal jammer for gsm cdma. pls send me circuit and detail for project which work.
    my email id is sanucool38@gmail.com
    pls reply

    ReplyDelete
  98. Unknown31 March 2014 at 17:40

    hii sir
    i want to make a jammer. pls help me

    ReplyDelete
  99. Unknown4 April 2014 at 03:16

    can we take antennas from radio?...

    ReplyDelete
  100. Unknown4 April 2014 at 03:56

    can we take antennas from radio?............!!

    ReplyDelete
  101. Funny life4 April 2014 at 09:49

    If work then other wise use only yagi antenna

    ReplyDelete
  102. Veera6 April 2014 at 07:24

    any other alternatives for bf494 transistor ..???

    ReplyDelete
  103. Danish15 April 2014 at 02:27

    There is a problem in the value of electrolyte capacitor (C5) in digram is 1u whereas in list it is 1M which ine is correct??

    ReplyDelete
  104. Unknown23 April 2014 at 10:21

    what is the number on the capacitor of 103pf?pls solve my problem

    ReplyDelete
  105. Funny life23 April 2014 at 23:57

    Asif 103pf cap. 103 means 10 x 10*3 pf, or 10 x 1,000 pf. 10 nf is equal to 10000 pf.103 is equal to 10000 pf.10 + 3 means 3 zero.

    ReplyDelete
  106. Funny life24 April 2014 at 00:03

    veeramani kandan you can use the mpsh10(rotated 180 deg) in place of a bf494(like I did). The bc548 > ksp2222a is also fine

    ReplyDelete
  107. hadi2 May 2014 at 02:42

    how i can make it work in lebanon (
    asian)

    ReplyDelete
  108. Unknown5 May 2014 at 07:46

    i found same post on other blog, and the notes says " Increase the inductor capacitor circuit components value for increasing the frequency." can i use this way? and can you explain me what is formula F= 1/ (2*pi*sqrt (L*C))? please

    sorry for my english.
    agha.alwayson@gmail.com

    ReplyDelete
  109. Funny life5 May 2014 at 10:49

    Agha (Increase the inductor capacitor circuit components value for increasing the frequency) try it and formula is

    f = 1/(2*pi)[(L*C)^(1/2)]

    2*pi*f = 1/sqrt(L/C)

    Let w = 2*pi*f (angular velocity)

    w = 1/sqrt(LC)

    wsqrt(LC) = 1

    w^2 = 1/LC

    LC = 1/w^2

    L = 1/(C*w^2) = 1/(4C*pi^2*f^2)

    ReplyDelete
  110. Unknown7 May 2014 at 05:56

    which capacitor i must to increase the value? all of them?.

    and can i make jammer with multiple frequency (ex: 800mhz, and 100mhz) in one PCB? and two swicth beetwen 800mhz and 100mhz i use a electric swicth? can i use this?

    sorry for my english. Thanks for your Help

    ReplyDelete
  111. Kbs naidu17 July 2014 at 23:51

    ay alternate for BF494 transister

    ReplyDelete
  112. Kbs naidu17 July 2014 at 23:52

    any alternate for transister BF494

    ReplyDelete
    Replies
    1. Funny life20 July 2014 at 04:37

      You can use the mpsh10(rotated 180 deg) in place of a bf494

      Delete
    2. Funny life20 July 2014 at 04:40

      BC548, BC549, or 2N3904 should do you a good source for them is Mouser although they don’t have BF494 in stalk . and Check the Ft of the BF494 (200Mhz) and match it with what you can get locally. The BT494 is a pretty damned fast little transistor, so be careful.

      Delete
  113. Unknown13 April 2015 at 13:23

    Hiii sir i want full description about this ckt and how can we use it can u plzzz send full description about this ckt ??? My email id is kashyapnagar2151996@gmail.com

    ReplyDelete

Subscribe to: Post Comments (Atom)

All updates in Your Inbox

Enter your email address:

Delivered by FeedBurner

 

Copyright @ 2013 Electronic Circuit Diagrams & Schematics.

Designed by AS & AS