AM bandwidth

Discussion in 'Wireless & RF Design' started by cpleng7, Sep 28, 2009.

  1. cpleng7

    Thread Starter Active Member

    Dec 18, 2008
    AM bandwidth also one of the disadvantage of the AM circuit.
    what AM bandwidth can be make useful to other circuit?
  2. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    You question is somewhat unclear.

    Are you asking what other modulation techniques make more efficient use of the available RF spectrum?
  3. flat5

    Active Member

    Nov 13, 2008
    Bandwidth for data? cw? voice? music?
  4. RAH1379

    Well-Known Member

    Dec 13, 2005
    Think of bandwidth as a window that allows only one signal through, the bandwidth should match the width of the signal it passes.
  5. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    What do you mean by "only one signal"?

    I'm guessing (for instance) you would mean you consider an AM transmission on a particular radio station as one signal - which is different to that being transmitted on another radio station.

    I would clarify this somewhat ....

    In reality that (AM) signal can include a range of frequencies - say within a 10kHz spread either side (upper and lower sidebands) of the center carrier frequency for the particular station - depending on the station content modulation signal characteristics.
  6. t_n_k

    AAC Fanatic!

    Mar 6, 2009
    And it's possible to imagine (again - for instance) two AM radio stations transmitting on the same carrier frequency and the two signals arriving at the same receiver - it could end up a mess for the listener. Hence the need to regulate who gets to use a particular part of the RF spectrum and under what conditions they can use it.

    Ever tried using CB when the trouble makers got going?