QuadRF: An Open-Source Four-Channel SDR for Radio Direction Finding
Summary
The QuadRF project is an open-source, phase-coherent four-channel software-defined radio (SDR) designed to make radio direction finding accessible to hobbyists and hackers. By measuring phase differences between antennas to calculate the angle of arrival of radio signals, the system uses two boards—one for receiving and pre-processing radio waves, and another for processing. The project aims to lower the barrier to entry for radio direction finding hardware, which has traditionally been difficult for the hacking community to access.
Source
Hacker NewsQuadRF: An Open-Source Four-Channel SDR for Radio Direction Findinghackaday.comKey quotes
· 2 pulledAlthough the basic principle of radio direction finding is easy to understand (measure the phase difference between different antennas, then calculate the angle of arrival from this difference), the radio hardware to actually implement this has historically been hard for hackers to access.
The QuadRF project aims to change this by building a phase-coherent four-channel SDR which makes direction mapping easy.
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