EI7GL....A diary of amateur radio activity: QRSS signals heard on 80 metres - 1st Apr 2019
10 MILLIWATT QRSS BEACON TRANSMITTER FOR 30 METER KEYED BY A WEBBROWSER
EI7GL....A diary of amateur radio activity: QRSS Signals from the UK on 28 MHz - Tues 19th May 2020
LA3ZA Radio & Electronics: Ultimate QRSS kits
QRSS CW—SENDING SLOW CONTINUOUS WAVE: PART 1
GitHub - swharden/QRSS-VD: QRSS Viewer for Python 2
IW0HK - Stazione Radiomatoriale di Andrea Borgnino - KIT per il QRSS - autocostruizione modi telegrafia lenta QRSS
Ham Radio Very Slow CW: QRSS | Canyon Traders
An experimental radio mode code for communicating around the world with milliwatts
GiamMa-based researchers SDR R&D IoT on Twitter: "GiamMa-based researchers SDR R&D IoT: Si5351 QRSS Beacon: An amateur radio #QRSS #transmitter (beacon) based on the #Si5351 #synthesizer & #Arduino Nano by VE2ZAZ https://t.co/N0sHOE4urf #