Si5351 based SDR Circuit Updates

I am going to be posting any tweaks, component changes and firmware/circuit mods here on this page.

02/02/2020: Changed the RF input buffer to a better performing amplifier with another option annotated as well. Also I changed some resistor values in this gain stage to  improve performance.

02/07/2020: Oops the integrating capacitors on the switching detector were shown as 1uF…it has been changed to the correct value of .1uF

02/07/2020: Updating the download link with the new schematic and an improved  AM demodulator for the FV-1.

Coming soon: New code for FV-1 based on 48Khz sampling…plus new schematic/layout utilizing the leftover SI5351 output as The FV-1 clk instead of a 40KHz xtal.

Newest Schematic here:

Updated Schematic

 

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