Turn your Android phone into real VHF/UHF Walkie-Talkie (requires additional digital radio hardware/software modem)
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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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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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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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