DragonOS: QRadioLink Radio over IP with an RTL-SDR

DragonOS is a ready to use Ubuntu Linux image that comes preinstalled with multiple SDR program. DragonOS-Focal (the build with the latest updates) has recently been updated to include the latest version of an interesting program called QRadioLink. We’ve posted about QRadioLink a few times in the past, but if you haven’t heard about QRadioLink before this is the description from the website:

QRadioLink is a GNU/Linux multimode SDR (software defined radio) transceiver application using the Internet for VOIP communication (radio over IP), built on top of GNU radio, which allows experimenting with software defined radio hardware using different digital and analog radio signals and a Qt5 user interface.

Its primary purpose is educational (demonstrating radio communications to children at schools), but it can also be customized for low power data communications on various ISM frequency bands. It can also be used as an amateur radio SDR transceiver for experimentation.

The latest DragonOS YouTube video author Aaron demonstrates the use of the QRadioLink Radio over IP feature, when combined with an RTL-SDR and umurmur server. Umurmur is a minimalistic mumble server, which is a Voice over IP (VoIP) application. Aaron runs the RTL-SDR and mumble server on a remote LattePanda single board computer, which then broadcasts music received via the RTL-SDR over a VoIP internet link to a laptop.

DragonOS Focal QRadioLink Radio over IP w/ RTLSDR (GNU Radio, umurmur, lattepanda)