This post documents an experimental, complete, journey of building an AFSK APRS packet transmitter and receiver using the ADALM PlutoSDR software-defined radio, first in MATLAB and then in Python. I tried to cover everything from generating AX.25 frames, AFSK modulation, hardware connection troubleshooting on macOS, and finally a full packet decoder. What is APRS? APRS […]
Recently I installed a trial version of the new PCB toolbox from Matlab. From Mathworks website: RF PCB Toolbox provides functions and apps for designing, analyzing, and visualizing high-speed and RF multi-layer printed circuit boards (PCBs). You can design components with parameterized or arbitrary geometry, including distributed passive structures such as traces, bends, and vias. […]
