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Design of AM receiver 195kHz to 400kHz

Discussion in 'General Electronics Discussion' started by ubercool, Jan 8, 2013.

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  1. ubercool

    ubercool

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    Nov 6, 2012
    I want to design a receiver that receives a morse code signal in the 195Khz to 400kHz band. Is it possible using components easily available in the market?
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    yes it is
    I used to have lots of fun decoding all th NDB navagation beacons from around my region, Australia and South Pacific
    one common way that I have done in the past for a LF receiver is to build the front end of the receiver for that freq range and then up convert to a communications receiver that already has SSB receive capability...

    so you will have a tuneable tuned circuits followed by a say J310 JFET preamp, into a NE(SA)602 balanced mixer and oscillator IC.
    The output from there would go to your comms receiver antenna input

    not sure where my circuits are now, do some googling for LF receiver circuits

    Dave
     
  3. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    May 8, 2012
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