AN/PRC-77 Portable Transceiver

American soldier using the KY-38 "man-pack", part of the NESTOR voice encryption system that was used during the Vietnam War. The upper unit is an AN/PRC-77 radio transceiver. The combined weight of the units, 54 pounds (24.5 kg), proved an obstacle to their use in combat.

The AN/PRC-77 Portable Transceiver, also known as AN/PRC 77 Radio Set, is a man-pack, portable VHF FM combat-net radio transceiver manufactured by Associated Industries^[1] and used to provide short-range, two-way radiotelephone voice communication.^[2]

In accordance with the Joint Electronics Type Designation System (JETDS), the "AN/PRC-77" designation represents the 77th design of an Army-Navy electronic device for portable two-way communications radio. The JETDS system also now is used to name all Department of Defense electronic systems.

^ [1], Manufacturer's website.
^ Mark Francis, KI0PF (2005). Mil Spec radio gear - Korean War to present day. Hicksville, NY: CW Communications, Inc. pp. 171–176. ISBN 0-943016-33-9.{{cite book}}: CS1 maint: numeric names: authors list (link)

[manuf-1] [1], Manufacturer's website.

[2] Mark Francis, KI0PF (2005). Mil Spec radio gear - Korean War to present day. Hicksville, NY: CW Communications, Inc. pp. 171–176. ISBN 0-943016-33-9.{{cite book}}: CS1 maint: numeric names: authors list (link)

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