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AN/AQS-13 dipping sonar deployed from an SH-3 Sea King. The AN/AQS-13 series was a helicopter dipping sonar system for the United States Navy.These systems were deployed as the primary inner zone anti-submarine warfare (ASW) sensor on aircraft carrier based helicopters for over five decades. [1]
HELRAS or the Helicopter Long Range Active Sonar is a naval helicopter undersea sensor, a dipping sonar (a form of towed array sonar), deployed by helicopters of many naval air forces around the world to detect submarines; it is a form of geophysical MASINT.
AN/AQS-13 dipping sonar deployed from an H-3 Sea King. Helicopters can be used for antisubmarine warfare by deploying fields of active-passive sonobuoys or can operate dipping sonar, such as the AQS-13. Fixed wing aircraft can also deploy sonobuoys and have greater endurance and capacity to deploy them.
Circle 7 logo, logo used by various US TV stations; Lists of channels 7s. Channel 7 branded TV stations in the United States; For virtual digital channels. Channel 7 virtual TV stations in Canada
The sonar work at the Cheadle Heath site expanded into digital signal processing, algorithm development, display generation, simulation, LCD and TV displays, mass storage, computer interfaces and highways. Takeovers of other companies brought new expertise in sonar arrays.
The following television stations operate on virtual channel 7 in the United States: [1]. K04RX-D in Preston, Idaho; K05CF-D in Weaverville, California; K05DQ-D in Burney, etc., California
SH-3 Sea King dipping a sonar, 1983. The Sikorsky SH-3 Sea King (company designation S-61) is an American twin-engined anti-submarine warfare (ASW) helicopter designed and built by Sikorsky Aircraft. A landmark design, it was one of the first ASW rotorcraft to use turboshaft engines. [1]
The following low-power stations, which are no longer licensed, formerly broadcast on analog or digital channel 7: K07AG in Aguilar, Colorado K07CY in Vernal, etc., Utah