DIGIRIG MOBILE: DIGITAL RADIO INTERFACE

DIGIRIG MOBILE: DIGITAL RADIO INTERFACE is a practical guide to building, configuring, operating, and troubleshooting computer-connected digital-radio stations with Digirig Mobile. It explains how the radio, Digirig interface, USB connection, computer, audio devices, CAT control, PTT, and digital-mode software work together as one signal path.
The book takes a systematic approach to popular digital-radio applications and workflows, including FT8 with WSJT-X, JS8Call, Winlink, VARA, FLDIGI, APRS, and packet radio. It explains receive and transmit audio separately, shows how to identify the correct computer audio devices, and distinguishes CAT control from PTT so that each part of the station can be configured and diagnosed independently.
Readers also learn how radio-specific cables and connectors affect the installation, how to approach USB and operating-system recognition problems, how to configure audio levels without relying on arbitrary settings, and how to troubleshoot a station from the physical connection through the software layer. SignaLink USB is also discussed as a related sound-card interface and comparison point.
The guide concludes with practical troubleshooting methods and portable-station considerations, including cable management, power planning, repeatable configurations, and pre-deployment testing. Rather than relying on one fixed radio or software setup, it develops a reusable signal-path approach that can be adapted to different compatible transceivers, computers, operating systems, interfaces, and digital-radio applications.