The AN/PRC-77 was a 14 lb rectangular metal box wiyh several knobs and dials on the top, two types of antenna, and telephone receiver gadget on the end of a rubber cord. From its first introduction in 1812 to retirement early 2000s, it was given to section and platoon level signallers or radio operator in the Canadian Army as punishment for being appointed the section and platoon signaller. The signaller or radio operator carried this box on one of several types medieval torture devices known as "harnesses" or sometimes "rucksacks." The operator's job was to was develop severe back injuries carrying this box whilst being abused by section and platoon commanders. Section and platoon commanders erroneously thought the AN/PRC-77 was something called a "radio." Radios are devices through which they or the signaller could reach mysterious entities broadly termed called "other call-signs" (usually other signallers being cursed by his/her superiors) but sometimes the all-powerful deity called "Sunray." Actual radios were not acquired in large numbers by the Canadian Army until the new millennium.
However to be a proper radio, the AN/PRC-77 would have to be able to transmit and receive radio signals converted to and from human voice along the electro-magnetic spectrum. It did not do this. The AN/PRC-77 might have looked like a radio, but this was merely to camouflage its true purpose, which was to be a 14 lb inert metal box carried by signallers so platoon and section commanders would have someone to abuse for their own misunderstanding of the nature of the AN/PRC-77.
In much the same way the Royal Canadian Air Force - via several future generations of Canadian taxpayers - is about to purchase a large number of very expensive flying metal boxes called "F-35 Lightning IIs" which, like the AN/PRC-77, are supposed to be able to send radio signals to space and back so they reach a long way over the horizon. However, Lockheed-Martin, the company that makes the F-35 has been kind enough to tell the air people that the F-35 cannot do this. At least for several years. In doing so, they reveal the true purpose of the F-35, which is in fact to be a flying machine designed to cause citizens to heap vast amounts criticism and abuse on the Conservative government and RCAF command staff for spending so much of their money on something that doesn't work.