leansdr: Lightweight, portable software-defined radio.
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Firmware for DMR transceivers using the NXP MK22 MCU, AT1846S RF chip and HR-C6000 DMR chipset. This includes the Radioddiy GD-77, Radioddity GD-77s, Baofeng DM-1801 and Baofeng RD-5R.
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ESP32 AM Radio Transmitter
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This is a tool for using Android with open-source mesh radios.
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Efforts to reverse engineer the Quanscheng UV-K5 radio
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PICO TNC is the Terminal Node Controler for Amateur Packet Radio powered by Raspberry Pi Pico. This TNC has same functionality as WB8WGA's PIC TNC.
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Horus Binary 4FSK Transmit Example, using RadioLib
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balon tracker: rpi zero ublox gps MTX2 radiometrix trx
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FT8 (and now FT4) library
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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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ESP32 LoRa APRS Modem
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Digital controlled radio frequency oscillator based on Raspberry Pi Pico (1 Hz to ~32.333 MHz band). RTTY, MFSK, freq sweep examples are included.
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A TX-only TNC (Terminal Node Controller) to generate the AFSK (Audio Frequency-Shift Keying) audio tones for APRS (Automatic Packet Reporting System) messages using a RP2040 microcontroller on a Raspberry Pi Pico board.
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rtl-wmbus: software defined receiver for Wireless-M-Bus with RTL-SDR
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Run FT8 natively on Android
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Raspberry Pi Pico FT8 Transciever
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A multiplatform tool to save Touchstone files from the NanoVNA, sweep frequency spans in segments and generally display and analyze the resulting data.
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Turn your Android phone into real VHF/UHF Walkie-Talkie (requires additional digital radio hardware/software modem)
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GridTracker listens to traffic from WSJT-X and displays it on a map. It will also load ADIF log files
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WSPR daemon for RTL receivers
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