What Is APRS, How Does It Work, and What Do Amateur Radio Operators Need to Know?
If you have spent time monitoring the 2-meter amateur radio band, you may have heard short bursts of digital noise on 144.390 MHz. Those bursts are probably APRS…
Baofeng UV-5R
Baofeng UV-5R
Upgrading My DigiPi to Version 2.2-1 and a 10.1-Inch Touchscreen
September 2026 My Raspberry Pi–based DigiPi has become an important part of my amateur-radio setup. I primarily use it for APRS with Dire Wolf, but DigiPi supports many…
Overview — What CTCSS and DCS Are
CTCSS (Continuous Tone-Coded Squelch System) and DCS (Digital-Coded Squelch) are privacy code systems used in analog two-way radio communications. They do not create new channels nor encrypt your…
Engineering a Low-Cost APRS Node with Raspberry Pi, DigiPi, and a Baofeng UV-5R Mini
Overview APRS (Automatic Packet Reporting System) remains one of the most mature examples of distributed RF data networking in real-world use. Long before the rise of modern IoT…