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Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1] – defined as "A transmitter-receiver associated with a fixed navigational mark which, when triggered by a radar, automatically returns a distinctive signal which can appear on the display of the ...
Identification, friend or foe ( IFF) is a combat identification system designed for command and control. It uses a transponder that listens for an interrogation signal and then sends a response that identifies the broadcaster. IFF systems usually use radar frequencies, but other electromagnetic frequencies, radio or infrared, may be used. [1]
Marine Air Control Squadron 4 was the first unit to utilize a TAOC in combat when it was established at the Monkey Mountain Facility on Monkey Mountain east of Danang. The squadron began operations on July 6, 1967. MACS-4 provided positive radar control for the Marine Corps' area of operations in the I Corps Tactical Zone. On January 13, 1971 ...
Here are 11 that definitely aren’t true—and everything you need to know about why. 1. You Shouldn’t Wash Mushrooms. Popular kitchen wisdom would have you believe that mushrooms should never ...
List of awareness ribbons. merged Pink and blue ribbon Discuss Proposed since March 2024. This is a partial list of awareness ribbons. The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness, ribbons, particularly those of a single color, some ...
Print awareness. Print awareness refers to a child's understanding of the nature and uses of print. A child's print awareness is closely associated with his or her word awareness or the ability to recognize words as distinct elements of oral and written communication. Both skills are acquired in the child's natural environment.
DEFCON. The defense readiness condition ( DEFCON) is an alert state used by the United States Armed Forces. [1] [2] For security reasons, the US military does not announce a DEFCON level to the public. [1] The DEFCON system was developed by the Joint Chiefs of Staff (JCS) and unified and specified combatant commands. [3]
Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...