Ham-Radio on Pi Stack

Self-Hosted Digital Voice Decoding: dsd-fme vs OP25 vs SDRTrunk for P25/DMR/NXDN Radio

Sat, 06 Jun 2026 00:00:00 +0000

Introduction

Digital voice has transformed land mobile radio. Public safety agencies, transit systems, utilities, and amateur radio operators have migrated from analog FM to digital protocols like P25 (Phase 1 and 2), DMR (Digital Mobile Radio), NXDN, and TETRA. For radio hobbyists, researchers, and interoperability developers, decoding these digital voice streams requires specialized software that can demodulate the complex digital modulation schemes and reconstruct intelligible audio.

Self-Hosted APRS & Packet Radio Infrastructure: Direwolf vs Xastir vs aprx

Fri, 05 Jun 2026 00:00:00 +0000

Introduction

The Automatic Packet Reporting System (APRS) is one of amateur radio’s most vibrant data networks, carrying position reports, weather telemetry, short messages, and emergency communications across VHF/UHF frequencies worldwide. Behind every APRS station — whether tracking a high-altitude balloon, monitoring a remote weather station, or providing emergency communications — sits a software-defined TNC (Terminal Node Controller) and infrastructure stack.

Self-Hosted Ham Radio Digital Voice Gateways & Repeater Linking: SvxLink vs MMDVM vs FreeDV

Fri, 05 Jun 2026 00:00:00 +0000

Introduction

Amateur radio has evolved far beyond analog voice. Today’s ham radio operators use digital voice modes, IP-based repeater linking, and software-defined radio to build global communication networks — all from a self-hosted Linux server in the shack. Whether you’re running a repeater site, building a digital voice hotspot, or experimenting with HF digital modes on a Raspberry Pi, open source software makes it possible.