Introducing UltraMSK

MSK modulation Welcome to UltraMSK. UltraMSK is a VLF radio receiver suitable for use in scientific research applications involving the remote sensing of the ionosphere or magnetosphere. UltraMSK measures both the phase and amplitude of MSK or CW/OOK modulated narrowband VLF radio signals. UltraMSK is implemented in software and runs on standard PC hardware.


Sample UltraMSK data can be viewed in the Gallery.

Latest News

May 2019: The quick start guide has been updated

Sep 2018: The hardware section has been updated

Nov 2016: Design notes for a portable VLF preamplifier are available.

Jul 2013: Installation instructions for Fedora 17 are now online. Binaries are available for Ubuntu

01 May 2019