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In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...
Model code of a Toyota Yaris (XP150) written on the VIN plate. The following model codes have been used by Toyota.The letters of the model code is found by combining the letters of the engine code with the platform code.
Mode 1: military only; provides 2-digit octal (6 bit) "mission code" that identifies the aircraft type or mission. [21] Mode 2: military only; provides 4-digit octal (12 bit) unit code or tail number. [22] Mode 3/A: military/civilian; provides a 4-digit octal (12 bit) identification code for the aircraft, assigned by the air traffic controller.
At 3 p.m., the Titan failed to surface. The frantic search and rescue operation that ensued transfixed the world . On June 22, the U.S. Coast Guard announced the discovery of a debris field .
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 ...
AN/TPQ-53 Quick Reaction Capability Radar. AN/TPQ-53 phased array radar. AN/TPQ-53 Quick Reaction Capability Radar is a mobile active electronically scanned array counter-battery radar system manufactured by Lockheed Martin . The radar is specifically designed to locate the firing positions of both rocket and mortar launchers.
The code-rate is hence a real number. A low code-rate close to zero implies a strong code that uses many redundant bits to achieve a good performance, while a large code-rate close to 1 implies a weak code. The redundant bits that protect the information have to be transferred using the same communication resources that they are trying to protect.
There have been a number of modes used historically, but four are in common use today: mode 1, mode 2, mode 3/A, and mode C. Mode 1 is used to sort military targets during phases of a mission. Mode 2 is used to identify military aircraft missions. Mode 3/A is used to identify each aircraft in the radar's coverage area.