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Source of 150kHz spur?

Discussion in 'Electronic Basics' started by Dummy, Dec 14, 2004.

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  1. Dummy

    Dummy Guest

    When I was testing the transmit power of a radio,
    a spur with Fc-150kHz was observed in spectrum analyzer. It appears
    across the frequency band 403MHz to 470MHz while transmitting.
    Spurs amplitude was about -70dBm, might be significant enough to cause
    interference to adjacent channel frequencies.
    Could the 150kHz be the harmonics of clock freq or something else...
  2. Mac

    Mac Guest

    Switching power supply?

  3. Mac brought next idea :
    might be a harmonic of the Lo in the radio... Could be a wireless
    microphone too.
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