GNSS Spring Fix

Introduction In recent posts I have been looking at using my new GNSS receiver on various maps such as OpenStreetMap, OpenCPN and operating systems such as Windows & RaspberryPi (Ref.1/6). Since the icebergs and polar bears have left Toronto Harbour, I thought it would be fun to do a spring fix with GNSS and AIScatcher.… Continue reading GNSS Spring Fix

Si5351 Clock Generator Spectrum on GNURadio

Introduction In previous posts I looked at programming the Si5351A clock generator for IQ quadrature and for simple single frequency output using Arduino (Ref.1/4). When used with amateur radio receivers and transmitters, we have to keep in mind that we are not dealing with a sinusoidal source but a square wave. From Fourier theory, a… Continue reading Si5351 Clock Generator Spectrum on GNURadio