Need help with the parameters for low power AM transmitter

Discussion in 'The Projects Forum' started by khadeejabaqui, Jan 25, 2016.

  1. khadeejabaqui

    Thread Starter New Member

    Jan 25, 2016
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    We are able to design the following project for middle school Science fair.
    http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p024.shtml#procedure
    We used only 1Mhz oscillator.We are not using 1.20MHz Oscillator.We do not have Oscilloscope.We are able to measure longer distances of output signal with longer antenna wires.
    The question is
    what other parameters of out put signal can we measure?
    If we send constant input signal( for example 440Hz input signal),is it reasonable to show that same output signal frequency is obtained using any frequency app?
    If we decrease the input voltage ,will the output decrease?What should be the effect?
    Where exactly carrier signal is given?transformer or Oscilloscope.
    Can anyone please explain the circuits (including changes in amplitude voltage and frequency of the signal)?
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    You will get more information from people if you show us the circuit diagram.
     
  3. khadeejabaqui

    Thread Starter New Member

    Jan 25, 2016
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  4. khadeejabaqui

    Thread Starter New Member

    Jan 25, 2016
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    The circuit
     
  5. bertus

    Administrator

    Apr 5, 2008
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  6. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    That's not a circuit diagram, that's a picture of your work.
     
  7. khadeejabaqui

    Thread Starter New Member

    Jan 25, 2016
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  8. BReeves

    Member

    Nov 24, 2012
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    And the blue wire still looks to be wrong.
     
  9. khadeejabaqui

    Thread Starter New Member

    Jan 25, 2016
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    It was the previous picture.I am done with experiment part.My only question is what parameters of output signal should I show for the Science fair as I have no Oscilloscope.
     
  10. ronv

    AAC Fanatic!

    Nov 12, 2008
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    Draw a picture of the output and then show how it would look going to the headphones of a crystal set.
     
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