Phone Spy Transmitter


Posted on Feb 7, 2014

Here is a very simple telephone broadcaster transmitter which can be used to eavesdrop on a telephone conversation. The circuit can also be used as a wireless telephone amplifier. One important feature of this phone transmitter is that the circuit derives its power directly from the active telephone lines, and thus avoids use of any external battery or other power supplies


Phone Spy Transmitter
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    RS232 reciever schematic
    Light-seeking robot
    Add-on-telephone-hold-button
    RGB LED Strip Circuit with Arduino
    How to Read Cellphones Schematic Diagrams
    Low Power Voltage Doubler Booster
    Simple Transformerless 5 Volt Power Supply
    MAX786 TEA5711T Application Circuit
    Application Of Uart In Gps Navigation System
    Magnetic Field Meter Magnetometer Circuit
    Bicycle Speedometer With Hub Dynamo



    Top