Tac Radio: Multi-Service Tactics, Techniques, and Procedures for Tactical Radios provides a single-source, consolidated reference for tactics, techniques, and procedures in the employment, configuration, and creation of radio nets consisting of voice and data tactical radios. This publication applies to the Army, Navy, Air Force, Marine Corps, and Coast Guard. Also, it may be used by multi-Service and Service components of a joint force to conduct tactical radio training and operations. Procedures herein may be modified to fit specific theater command and control (C2) procedures and allied and foreign national electromagnetic spectrum management requirements. Tactical radios are deployed at all echelons and provide users the capability to conduct interoperable voice and data communications. These systems use high frequency (HF), ultrahigh frequency (UHF), very high frequency (VHF) bands, satellite communications (SATCOM), and multiband radios. The equipment may be specifically designed for military use and may include commercial off-the-shelf (COTS) radios. Each system has unique capabilities and characteristics commanders use to determine how to employ each system, depending on the mission and other factors. This publication discusses voice and data tactical radio systems in common use among the Services. It also reviews the basic operational and planning procedures for these systems in a joint environment.