Questions tagged [equipment-design]
93 questions
5
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Demodulation based on external frequency source
I saw a design for a walkie talkie that used a mixer that mixed the TX freq to the RX path before demod. Looking at the SA616 chip, demod is acomplished by Gilbert cell quadrature detector that is downstream from this.
The simplest FM detector is…
Ben Madison KO4UXC
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How can I use the 455kHz IF signal?
As I own a PL-660, I saw a post that 455kHz IF signal can be obtained by connecting a wire to the board.
I wonder, if I can tune to any signal by using this IF signal by SDR? And what are some common usage of this signal?
Harold Chan
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