Vietnam era US Navy, Marine Corps or Air Force pilot camouflaged AN/PRC-90 survival radio. Dated 1972, made by OKLAHOMA AEROTRONICS. Complete with telescopic 1/2 waves antenna and earphone. Essential to complete a US Navy SV-2 A/B or Air Force SRU-21 survival vest. Introduced in the late 60's, these survival radios were developed to establish a communication between downed pilots and their rescue & recovery teams, they were still in use in the early 2000's.