- Squad tactical radio : The designation, in U.S. and many other militaries, for a backpack radio assigned to squads of 9-13 soldiers, used for tactical coordination over a range of approximately 5 miles/8 kilometers; subsequent generations are more rugged, secure, and more power-efficient
- U.S. Army : Add brief definition or description
- AN/PRC-77 : A compatible slight upgrade of the U.S. Army AN/PRC-25 tactical radio; see its parent for technical details
- Frequency modulation : Technique for imposing information onto a electromagnetic signal of constant frequency -- the "carrier wave".
- Frequency synthesizer : Add brief definition or description
- AN/PRC-10 : The basic Korean War tactical radio of the U.S. Army, a backpack vacuum tube radio with preselected frequencies in the 38.0 to 54.9 MHz range, introduced in 1951 that began to be replaced by the AN/PRC-25 in 1962.
- AN/PRC-119 : A 1990s-vintage manpack tactical radio compatible with the SINCGARS waveform and security system, which is the basic U.S. Army infantry squad radio being replaced with more advanced, flexible units
- AN/PRC-148 : The Multiband Inter/Intra Team Radio (MBITR), which covers the HF through VHF spectrum, is the first widely defined military software-defined radio, although it precedes the Joint Tactical Radio System.
- SINCGARS : Add brief definition or description
- TSEC/KY-38 : Add brief definition or description
- TSEC/KY-57 : Add brief definition or description