(NBEMS) is an Open Source software suite that allows amateur radio operators to reliably send and receive data using nearly any computer (Windows, Mac, and Linux) and any analog radio without requiring a dedicated digital infrastructure or specialized modem hardware.
At the bottom of this page you will find download links for the three basic programs necessary to operate NBEMS. NBEMS works on both VHF/UHF FM and on HF. Please see information below for full details on NBEMS.
NBEMS Demonstration Video
Download the four files below for NBEMS operations
The above file is the sound card calibration software