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The FM transmitter consists of oscillator, modulator, power amplifier and the audio circuitry. Usually some of the stages are combined like modulation is done in the oscillator and if it is small power transmitter,
oscillator is also the output (no power amplifier).
FM modulation is often very simple (varicap diode and capacitor tied into
resonant circuit).
to do the DSSS(direct sequence spread spectrum), we spread the signal before or after the modulation?
any kind of modulation can be used? i'm using the fm modulation.
any website recommendation on doin the dsss modulator?
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