README.md

GNU Radio examples

This porpouse of this repo is to show different examples of the use of GNU Radio. The files included are the .grc flowgraphs for GNU Radio and the .py for editing in python. Yu can also see a presentation used for Flisol Ecuador 2021 in Quito, is called presentacion_Radios_definidas_por_software.pdf and is in spanish.

Examples

• Basic use: the idea is to show how a simple collection of blocks can produce a cosine IQ wave and present it in a GUI. The example is called basic_example.grc and basic_example.py. This example was adapted from Cardona I guide

• Tunning two radios: The idea is to show a GUI that can listen to two radios at the same time with one device. This example was adapted from Cardona I guide. The example is called tunning_two_stations.grc and tunning_two_stations.py

• Decoding AAUSAT-4 simple: Using gr_satellites by Daniel Estevéz and the audio file aausat_4.wav from the satellite recording repo you can use the Satellite decoder block to transform a signal and the using the Hex Dump block to show HEX data of the satellite in GNU Radio. This example was adapted from this talk. The example is called gr_satellites_simple.grc and gr_satellites_simple.py

• Decoding BELIEF-SAT: A more advanced example presented by Daniel Estevéz, it uses a more complex Decoding process, from filtering using Frecuency Xlating FIR Filter and Low Pass Filter, then demodulation using Quadrature Demod and FSK Demodulator blocks and finally deframe the signal using CCDS Reed-Solomon Deframer block to obtain HEX values of the satellite. I uses the SDRSharp_20200704_132444Z_435912500Hz_IQ.wav audio file from BeliefSat repository

Licence

MIT <3, but please cite this work in academic research.