WSPR beacon for Raspberry Pi Pico, based on pico-hf-oscillator library. It doesn't require any hardware - Pico board itself only.
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K3NG Arduino CW Keyer
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Minimal WSPR beacon using Si5351Arduino library
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WSPR daemon for RTL receivers
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The LoRa APRS Tracker will work with TTGO T-Beam V0.7 (433MHz SX1278) TTGO T-Beam V1 (433MHz SX1278)
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Raspberry Pi bareback LF/MF/HF/VHF WSPR transmitter.Makes a very simple WSPR beacon from your RasberryPi by connecting GPIO port to Antenna (and LPF), operates on LF, MF, HF and VHF bands from 0 to 250 MHz.
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SSTV beacon based on Raspberry Pi
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VP-Digi is a functional, cheap, easy to assemble and configure STM32-based APRS digipeater controller with built-in KISS modem.
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This map shows all the blinking beacons from OpenStreetMap.
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