What would I hear?

Discussion in 'Wireless & RF Design' started by nerdegutta, Dec 24, 2009.

  1. nerdegutta

    Thread Starter Moderator

    Dec 15, 2009
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    785
    Hi, gurus.

    Sorry if this in the wrong section of the forum.

    I've found this circuit:

    http://www.sentex.ca/~mec1995/circ/rft1.htm

    What would I be hearing on my FM-receiver? And how do I know that it is working?

    Merry Christmas to you all! :)


    Jens
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
    Hello,

    It is not clear at wich frequency the circuit will work.
    You will probably only hear the noise dissapear on an FM recievers as there is no modulation.

    Greetings,
    Bertus
     
  3. nerdegutta

    Thread Starter Moderator

    Dec 15, 2009
    2,517
    785
    Thanks for reply.

    I was planning to turn it on, and put my FM radio beside it, and start turning the search wheel, but I'm not quite sure what to expect, except the usual radio stations.

    What sort of noise?

    Jens
     
  4. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
    Hello,

    When the FM reciever is not tuned to a radiostation you can hear a hiss sound
    (there are recievers with a squelch to suppress it).

    When there is a "station" without modulation the output of the reciever will be not heard.

    Greetings,
    Bertus
     
  5. nerdegutta

    Thread Starter Moderator

    Dec 15, 2009
    2,517
    785
    Thank you.

    That made it clearer to me.

    :)

    Jens
     
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