Description of some GNU Radio blocks

You can find more about the data types available in GNU Radio in the Doxygen documentation.

In GNU Radio Companion, data types are distinguished with colors on the ports:

Port types

A full list of colors is available from the menu: Help > Types

Port colors

You can only connect two ports with the same type:

Same type ports can be connected

In general, complex signals have double bandwidth compared to real signals (but also need twice as much bytes to store with the same precision):

Complex vs Float

Complex vs Float