Building an Arduino APRS Tracker (ham radio) - Exhibition / Gallery - Arduino Forum
Radio Shield 2 for Arduino, Argent Data Systems
Arduino for Ham Radio: A Radio Amateur's Guide to Open Source Electronics and Microcontroller Projects: ARRL Inc., Glen Popiel KW5GP: 9781625950161: Amazon.com: Books
Hands on: A Ham Radio for Makers - IEEE Spectrum
Arduino APRS Tracker - www.billy.gr
Arduino GSM General Packet Radio Service SIMCom Mobile Phones, others, electronics, shield, internet png | PNGWing
Packet radio lives on through open source software | Opensource.com