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Audio QotD: RF Mixing

Discussion in 'Question of the Day' started by mbenonis, Dec 19, 2008.

  1. mbenonis

    mbenonis Wireless Guy Administrator Premium Member

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    Where can mixing (and thus, intermodulation) of RF signal occur in a typical wireless microphone system? There are multiple possible answers to this question.
     
  2. mbenonis

    mbenonis Wireless Guy Administrator Premium Member

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    Anyone? Is the question unclear?
     
  3. erosing

    erosing The Royal Renaissance Man

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    Shot in the dark after some research that I'm not sure is applicable:

    The two parameters that most affect the interfering signal level into the transmitter's output circuit are the output loading and the circuit's frequency selectivity.

    -and/or-

    100, 201, 99, 301, 402, 98, 502 kHz, respectively.

    -and/or-

    Non-linear inputs and outputs.
     
  4. TimmyP1955

    TimmyP1955 Active Member

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    I would think the receiving antenna - if active, the combiner - if active, and the receivers themselves. I suppose it's possible that it could occur in the passive receiving components, but I'm not that wireless savvy. It might even occur in the transmitter if it's hit with enough of the right signal?
     
  5. mbenonis

    mbenonis Wireless Guy Administrator Premium Member

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    Yep, y'all are on the right track here...
     
  6. Chris15

    Chris15 CBMod CB Mods Premium Member

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    Particularly in IEM systems where you get a number of transmitters stacked on top of each other, in many cases literally, you are most definitely getting Intermods in the transmitters...

    Will we not get RF mixing in air?
     

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