Summary

A minimalist HF receiver

Description

This is a direct conversion receiver that uses a quadrature sampling detector (AKA Tayloe detector) to mix the RF down to audio baseband. Demodulation and DSP operations are done by an Atmega328 processor and software development uses the Arduino IDE. The receiver is implemented on a single circuit board with dimensions of 75mm x 55mm (2.9" x 2.1").

Arduino IDE support

This project uses the Atmega328PB processor. You may need to upgrade your Arduino IDE to add support for this processor. There are probably a few ways to do this. The way I did it was to install MiniCore (https://github.com/MCUdude/MiniCore).

Band Filter Modules

This project uses plug-in band filter modules. The circuit board for these modules are the same as for my ADX-MI3 digital radio project and the gerbers can be found here:

https://github.com/scottlbaker/ADX-MINI/tree/master/hardware/lpf/lpf-with-ID

Contributors

• Scott L Baker

• If you like my designs and would like to support my work: https://buymeacoffee.com/scottlbaker

Acknowledgement

The hardware for this project is based on the uSDX architecture. The uSDX is a software defined designed by PE1NNZ and DL2MAN. https://github.com/threeme3/usdx

The firmware for this project is based on code by PE1NNZ https://github.com/threeme3/usdx-sketch and is used by permission from the author

License

See the LICENSE file in this repository