Help Understanding this.

Discussion in 'General Electronics Chat' started by deegan, Nov 18, 2013.

  1. deegan

    Thread Starter New Member

    Nov 18, 2013
    Hello ,

    Here is the diagram

    I want to build this. But before i do i want to understand how it works and what the components do. Like that strange box symbol.

    Its desgined to locate a radio signal. I want build something similar to this. But just to locate 433MHZ and just to be done via audio cable.

  2. ronv

    AAC Fanatic!

    Nov 12, 2008
    I don't think you can. L1 & L2 are IF coils tuned to ~ 4 Mhz. I don't know what you would use for the high frequency.
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
    That circuit is for 4MHz; not 433Mhz (big difference). Try one of these programmed to your frequency of interest. When you are done playing with it, go and get a Ham License, so you can transmit legally.