Crystal Controlled FM Transmitter Circuit

Posted on Feb 6, 2014

This circuit operate between 150 to 165 Mhz. The Crystals I use Are The Digi-Key Electronics Barrel Crystals CA-301 Type which cost a couple of bucks per crystal. Virtually any Fundamental Crystal between 14 and 17 Mhz will output a frequency of between 140 to 170 Mhz, if the crystal has a load capacitance of around 18 pf. If you wish to build this transmitter

Crystal Controlled FM Transmitter Circuit
Click here to download the full size of the above Circuit.

on A custom frequency simply Divide your desired transmit frequency by 10 and follow the instructions below:

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    75 meters Band SSB transceiver
    2 LED flasher with two 2N3904 transistors
    Square wave-to-triangle converter
    simple 100 watt inverter
    telephone call voice changer
    monitor life extender
    Simple DC power delay circuit
    Cosine wave Oscillator
    Medium-Power FM Transmitter
    Parking call alarm circuit
    OP amplifier using FET input type long analog timing circuit