P2P Voice/Video phone App for local networks.

Turn your Android phone into Amateur Radio Codec2/OPUS APRS enabled DV handheld transceiver (Bluetooth/BLE/USB/TCPIP KISS/Sound modem client for DV digital voice communication)

The source code and dataset are used to demonstrate the DF model, and reproduce the results of the ACM CCS2018 paper

EVO PTT - The Walkie Talkie Solution for Businesses

An Android app to enable infrastructure-less communication using WIFI-Direct.

A bluetooth based push to talk app for Android.

Walki Talkie QuanSheng UV-K5/K6/UV-5R Plus Custom Firmware Merge from: ▪ @OneOfEleven and ▪ @fagci Mod w. Spectrum Analyzer ▪ by @egzumer ▪ Enhanced by @RE3CON: Full freq range of BK4819 for TX and RX: 14MHz ~ 665MHz and 745MHz ~ 1899MHz. 2nd ToneBurst 1050Hz and 1750Hz = PTT + Sidekey 1, PTT + Sidekey 2. Build with CGI 11.3.Rel1 saves some space

森海克斯8800(pro)/8600(pro)/GT12跨平台写频软件，支持蓝牙写频、更方便的信道修改以及其他实用小工具

ESP32 based Codec2/OPUS DV hobby UHF handheld transceiver aka walkie-talkie

VoicePing Android SDK - Walkie Talkie/Push-To-Talk Android SDK for your Chat Apps

QuanSheng UV-K5/K6/UV-5R Plus Custom Firmware Merge from: ▪ @OneOfEleven and ▪ @fagci Mod w. Spectrum Analyzer ▪ by @egzumer ▪ Enhanced by @RE3CON: Full freq range of BK4819 for TX and RX: 14MHz ~ 630MHz and 760MHz ~ 1879 MHz "ENABLE_TX_UNLOCK". 2nd ToneBurst 1750Hz and 1050Hz = PTT + Sidekey 1, PTT + Sidekey 2.

Quansheng Wiki

A utility to convert from CHIRP CSV export files to the CXF file format used by the Quansheng UV-K5 radio CPS- now enhanced with GUI and DCS support

Smart Pi Radio Assistant is a smart home assistant that you can access via voice commands on a walkie talkie! Turn your Raspberry Pi into an IOT device that can control devices and reply to you via radio waves. It's fully customizable!

Walkie Talkie with Arduino Nano and nRF24L01

A real-time push-to-talk server to route and broadcast voice messaging

Online firmware patcher based on k5_v2.01.26 firmware version as target for the Quansheng UV-K5 radio and it's variants. A customized version of whosmat's uvmod patcher.

OEFW Open reimplementation of the QuanSheng UV-K5 firmware v2.1.27 by DualTachyon enhanced extended

FM Walkie Talkie using RDA5820N