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The AN/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN/PRC-25.It differs from its predecessor mainly in that the PRC-77's final power amplifier stage is made with a transistor, eliminating the only vacuum tube in the PRC-25, as well as the DC-DC voltage converter used to create the high plate voltage for the tube from the 15 V battery.
Operation Rolling Thunder was a gradual and sustained aerial bombardment campaign conducted by the United States (U.S.) 2nd Air Division (later Seventh Air Force), U.S. Navy, and Republic of Vietnam Air Force (RVNAF) against North Vietnam, China and North Korea from 2 March 1965 until 2 November 1968, during the Vietnam War.
The American bombing campaign was geared towards attrition, wearing down the will of the Communist North to fight. As one historian notes "Knowing that the Vietnamese could replace their losses indefinitely, and were doing so, the American war planners counted on the psychological wear and tear of modern air-power upon a land-bound adversary.
Su-22M4 ~43 [1] Soviet Union Vietnam According to the Vietnam Air Force Air Defense newspaper, in the 5 years from 2019 to 2024, the A32 factory has overhauled 20 Su-22s and repaired 23 Su-22s at units (i.e. on duty), [2] so 43 Su-22 is the most approximate number of Su-22s in Vietnam.
Dorr, Robert F. Air War Hanoi, 1988 ISBN 0-7137-1783-1 Dunstan, Simon Vietnam Choppers: helicopters in battle 1950-75 , 2003 ISBN 1-84176-796-4 Rosenau, William Special Operations Forces and Elusive Enemy Ground Targets , 2001 ISBN 0-8330-3071-X
The South Vietnam Air Force, officially the Republic of Vietnam Air Force (RVNAF; Vietnamese: Không lực Việt Nam Cộng hòa, KLVNCH; French: Force aérienne vietnamienne, FAVN) (sometimes referred to as the Vietnam Air Force or VNAF), was the aerial branch of the Republic of Vietnam Military Forces, the official military of the Republic of Vietnam (South Vietnam) from 1955 to 1975.
The 7th Airborne Command and Control Squadron was activated at Da Nang Air Base, South Vietnam in March 1968 and performed airborne battlefield command and control (ABCCC) mission in Southeast Asia from its activation until 15 August 1973 and controlled airborne forces during the recovery of the SS Mayagüez in May 1975, in Grenada from, 23 ...
When the air war started, the entire North Vietnamese air defence system contained twenty-two early warning radars, four fire-control radars, and 700 anti-aircraft guns. By 1967, North Vietnam was firing 25,000 tons of anti-aircraft ammunition a month.