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Radio Tuning

Discussion in 'Electronic Basics' started by Roy Ingham, May 25, 2005.

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  1. Roy Ingham

    Roy Ingham Guest

    Hi All

    Where or What is the formula to calculate Radio Frequencies?

    Variable Capacitor (I assuming) as the tuning dial, then what
    give you the range of Freq to tune into. Yes I'm wanting to
    start my first electronics project and would like to build a
    simple yet effective radio, driven on a 9V battery.

    Also Automatic tuners or scanners found on modern car radios
    do, these detect the strongest Voltage / ? to determine that
    the current frequency is a good channel to lock into. You
    know you press the button and the radio runs through the
    stations, and stops at some point. Missing some stations.
    What makes it stop a detection in strong voltage or what ??

    Thanks in advance
    B
     
  2. Tom Biasi

    Tom Biasi Guest

    A capacitor and an inductor form a resonant circuit.
    There are other ways to tune. The example that you give is digital tuning.
    Look here first and do some research.
    http://web.ukonline.co.uk/b.gardner/Theradio.html

    Good Luck,
    Tom
     
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