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QRSS/DFCW/CW/SMT Hell Beacon
Multimode MEPT based on OpenBeacon
QRSS Plus: live QRSS grabbers from around the world
A multimode radio beacon for QRSS (FSK-CW, CW) and WSPR. Implemented using AD9850 and STM32duino. Repository hosting schematics, software and other implementation notes.
A collection of resources for ultra-narrowband amateur radio experimentation