RYA Handy Guide to Marine Radio (A-G22): A Quick-reference Guide to Radio for Leisure Users‪.‬

This handy book for the leisure user is a quick-reference guide to radio procedures (including Urgency, Safety, and Distress messaging); installing and maintaining a VHF radio; the licensing requirements, and GMDSS including Navtex.

It also features useful extras, including prowords and the phonetic alphabet and numerals.