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Custom firmware for the HackRF SDR + PortaPack H1 addon
VP-Digi - a functional, cheap, easy to assemble and configure STM32-based APRS digipeater controller with built-in KISS modem.
A modem/TNC to generate the AFSK audio tones for sending APRS messages using a Raspberry Pi Pico
AFSK 1200 X.25 APRS Modulator & Demodulator
Old school Arduino modem, Bell 103 compatible, at 300 baud
My own custom firmware for the HackRF SDR + PortaPack H1 addon - Not for the faint-hearted.
Dorji DRA818V VHF transmitter module shield for Arduino UNO & compatibles
This project will have the files for a Cube Sat Telemetry system Using Raspberry Pi Transmitter Board
Simple Bluetooth KISS AFSK1200 TNC based on LibAPRS
simulation for the modulation and demodulation of audio frequency-shift keying
Chat using „enhanced“ end-to-end-enryption and modulation of audio signal in isolated device, ensuring privacy, anonymity and cybersecurity.
Terminal Node Controller and APRS Tracker Project
Generic AX.25 beacon packet generator library for APRS
An airgapped encryption/decryption device for off-grid communication
This repository will have the Transponder and Telemetry software applications.
GNU Radio hier blocks to implement HDLC AFSK modulation