Radio Operator's Handbook - MCRP 3-40.3B (Formerly MCRP 6-22C)Marine Corps Warfighting Publication (MCWP) 6 22, Communications and Information Systems, provides the doctrine and tactics, techniques, and procedures for the conduct of communications and information systems across the spectrum of Marine air ground task force (MAGTF) operations. Marine Corps Reference Publication (MCRP) 6 22C, Radio Operators Handbook, complements and expands upon this information by detailing doctrine, tactics, techniques, and