Category Archives: SDR

ADC to DAC revisited

The simple program shown previously got me started on the Arduino, but no real processing is done on the input. To do any useful processing the system will need to be better organised. The time critical processes are reading the … Continue reading

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ADC to DAC on the Arduino

The code below can be used to read values from an ADC (A0) and then just copy them to a DAC (DAC0) for output. The code has been adapted from the post by MarkT (see link below). Details of the … Continue reading

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SDR – basic structure

The basic structure of the system will be:  audio in  →  anti-aliasing filter  →  ADC  →  digital signal processing  →  output For the filtering experiments the output will be an analog audio signal (from a DAC); while for the QRSS … Continue reading

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Starting with Software Defined Radio

My initial idea is to explore what can be done by processing the audio output from a commercial receiver. There are two things that I want to try: Filter the audio signal to improve the reception of SSB, or CW. … Continue reading

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