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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?

    --Mac
     
  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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