TV remote jammer

john August 27, 2009 42 Comments

Description.
Here is the circuit diagram of simple but highly effective TV remote jammer circuit. Most of the TV remotes have 38KHz operating frequency. A flood of IR beams in the same frequency can easily confuse the TV receiver and this is the operating principle of our jammer. The circuit is nothing but an astable multivibrator based on NE555 IC. The output of NE555 is amplified using a PNP transistor SK100 to drive the IR LEDs. Not only TV remotes, but any IR remotes operating in the 38KHz frequency region can be also jammed by using this circuit.

Circuit diagram.

tv-remote-jammer

Notes.

  • The circuit can be assembled on a Vero board.
  • Use a 9V PP3 battery for powering the circuit.
  • Mount the IC on a holder.
  • POT R4 can be adjusted to exactly match the jammer’s frequency to the remotes frequency. This adjustment is very essential for effective jamming.
Comments
  • January 9, 2015

    hey i got the LEDs lightened up( saw them from digitical camera) yet the jammer wont work at all 🙁 i tried changing potentiometer still remote still works

  • aniket
    January 8, 2015

    are all components available in store (electronic) ?

    • Abin Mathew
      August 25, 2015

      yes

  • akhil p
    November 15, 2014

    How to adjust R4 to get matching frequency

  • vasudev
    June 3, 2014

    instead of sk100 which transistor can i use

    • Seetharaman
      June 4, 2014

      BD140, S8550, CK100, 2N2905

  • chinmaya parida
    May 7, 2014

    i want to make every electonic matterial on remot suppose we want to switch on the fans by pressing switch of he remote can switch on h fans

    • Seetharaman
      May 9, 2014

      You can buy the remote receiver and use it with a relay to switch fan on / off by using the on / off channel of the remote for it.

  • zeeshan
    December 5, 2013

    is this circuit will jame the universal tv remote

    • Seetharaman
      December 7, 2013

      Yes it can jam any IR remote control

  • builder
    November 21, 2013

    Does C1 and C2 are electrolytes or ceramics?

    • Seetharaman
      November 23, 2013

      Hi builder C1 & C2 are ceramic disc capacitors.
      Hi Vamsi it is working only the frequency adjustment requires little patience and trials.

  • `vamsi
    October 27, 2013

    is it working for any one

  • Rex
    July 8, 2013

    Seetharaman, have you use this circuit to jam any TV Receiver Sets before? Please reply me because i want to build this circuit

    • Seetharaman
      July 9, 2013

      Hi Rex When this device is transmitting IR signal, the TV will not respond to commands from the original TV remote control, provided the frequencies of both are matched as explained in the text.

  • Rex
    July 8, 2013

    Seetharaman, Has any person tried this circuit before? Can this circuit jam TV receiver sets?

  • Manna
    June 19, 2013

    I need it urgent please…..

  • Manna
    June 18, 2013

    I need a mobile gammer circuit for a certain area range to block the incomeing call.
    Could you please provide me?

    • suor
      June 20, 2013

      check your spelling..mobile signal jamming by public user is illegal in most countries

  • abhishek
    June 4, 2013

    really it does not work………….

  • hahhha
    April 26, 2013

    i got 45khz at output will my circuit jam it or not?

    • Seetharaman
      April 28, 2013

      Please see the note. try adjusting the pot (to adjust the frequency)till it jams the operating remote.

  • Vishal
    April 2, 2013

    What are the alternatives to the SK-100 transistor?

    • Seetharaman
      April 18, 2013

      BD136 2N2905 8550

  • March 22, 2013

    Hi….my circuit connection is working and i can see the ir led light wit camera but i keep infront of tv means the tv remote is still working ..pls give me idea

  • Vishakh
    February 7, 2013

    What hapens to the circuit when i use 220ohm instead of 180ohm as R5

  • hamid
    February 23, 2012

    hi
    you can see inferared led,s light whit mobile camera when you push a button on tv remote … i build these circuit but it dosen’t work becuse i can’t see light whit camera and tv remote still working.

    • March 22, 2013

      Any body know means pls tell me

  • January 7, 2012

    hi2012 at 1:26 pm

    HI-I NEED A CIRCUIT TO TEST SATTELITE RECEIVER EQUPMENT AFTER REPAIR THAT WITHOUT ADJEST DISH BECAUSE I WANT TO FINSH AND TEST IN MY SHOP
    aadi

  • saeed
    January 7, 2012

    HI-I NEED A CIRCUIT TO TEST SATTELITE RECEIVER EQUPMENT AFTER REPAIR THAT WITHOUT ADJEST DISH BECAUSE I WANT TO FINSH AND TEST IN MY SHOP

  • aadi
    December 24, 2011

    kindly tell me how this circuit (remote jammer) having 555 i.c works.
    mean;
    1 ; how it generate the REQUIRED pulses
    2 ; how that pulses cancle out the effect of the t.v IR
    THANKS

  • seetharaman
    November 5, 2011

    Hi Shinj use any of the following BEL100P, BEL188, 8550, 2N2905, BD136, BC327

  • November 4, 2011

    Please give a substitute transistor in the place of SK100

  • chiranjoy
    September 3, 2011

    can the ir sensor TSOP 1836 recive this remote jammer ir led signal?????plz reply sir.plzzzzz.

  • August 17, 2011

    😀

  • e j rohan ajith
    August 9, 2011

    pleas give me universal remote control working remote recever circuit diagram

  • June 30, 2011

    how can we connect a preset ( variable resistor)

  • July 23, 2010

    thank’s it working !!!!

  • seetharaman
    July 5, 2010

    Hi Bryce within the room only being IR

  • brycesprung
    July 4, 2010

    what is the wireless range of this circuit

  • June 25, 2010

    are the leds the antenna

  • mehmet emre
    January 29, 2010

    nasıl çalışır ben devreyi yaptım amma çalıştıramadım

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