Installing QT on a Balenafin

I am trying to install QT on the balena so that I can create a Software Defined Radio. Has anyone successfully installed Qt on the Balenafin.
I have tried using a PC to cross compile and then rsync it back.
Many Thanks

Welcome to the forums @gredpath! Have you tried apt-get install qt4-dev-tools to install Qt on the balenaFin? (Assuming using an Ubuntu/Debian-based image.) You may also be interested in looking at this post for a web-based SDR that works on balena, although it does not use Qt: