Crystal Controlled FM Transmitter Circuit

  
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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 - schematic

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



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