This is the ax25_hackrf-write-a-block package meant as a guide to building out-of-tree packages. To use the ax25_hackrf blocks, the Python namespaces is in 'ax25_hackrf', which is imported as: import ax25_hackrf See the Doxygen documentation for details about the blocks available in this package. A quick listing of the details can be found in Python after importing by using: help(ax25_hackrf)