FM RADIO JAMMER

1. This circuit can be used to jam FM radios.
2. The circuit is nothing but a classic signal transistor oscillator operating in the VHF region.
3. Working principle of this circuit is very simple and straight forward.
4. powerful VHF oscillations from the circuit will interface with the FM signals to nullify it.
5. This circuit is intended only for fun and i request you not to misuse it.
   
   NOTES:
6. For L1 make 6 turns of 16AWG enamelled copper wire on a 9mm plastic former.
7. The circuit can be powered using a 9V PP3 battery.
8. For extended range, use an antenna.
9. A 30cm long wire connected anywhere on the coil will do for the antenna.
10. For better performance, assemble the circuit on a good PCB.

T.V.REMOTE JAMMER

1. Here is the circuit diagram of simple but highly effective TV remote jammer circuit.
2. Most of the TV remotes have 38KHz operating frequency.
3. A flood of IR beams in the same frequency can easily confuse the TV receiver and this is the operating principle of our jammer.
   
4. The circuit is nothing but an astable multivibrator based on NE555 IC.
   
5. 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. NOTES:
6. The circuit can be assembled on a Vero board.
7. Use a 9V PP3 battery for powering the circuit.
8. Mount the IC on a holder.
9. POT R4 can be adjusted to exactly match the jammer’s frequency to the remotes frequency. This adjustment is very essential for effective jamming.