A Shortwave Pulsed-Marker Oscillator Circuit

  
A useful marker oscillator can be made using an NE555 to pulse the oscillator at an audio rate. This makes it easy to find the signal in the presence of interference.
A Shortwave Pulsed-Marker Oscillator Circuit - schematic

The crystal can be any suitable frequency from 1 to 30 MHz.



Recommended videos


  • Electronic Basics #17: Oscillators || RC, LC, Crystal
    Duration: 6:02.
  • DIY RF Signal Generator
    Duration: 21:22.

News


.