Glossary
What radio does a gyroplane carry?
A VHF air band radio for talking to air traffic control and other aircraft, the same equipment and frequencies used across general aviation. Handheld and panel-mounted versions are both common in this category.
Also called COM radio
That is the whole entry for now. The longer version, with the mechanics and worked examples, is still to be written. See autorotation for how those read once they exist.