PRC-9

PRC-9 [r]: A variant of the AN/PRC-10 tactical radio of the U.S. Army in the Korean War, differing only in operating frequency from the AN/PRC-10 and AN/PRC-8. All were backpack vacuum tube radios with preselected frequencies, introduced in 1951 and begun to be replaced by the AN/PRC-25 in 1962. It operated between 27.0 to 38.9 MHz ^[e]

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