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Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens. It is widely used in optical engineering laboratory work to analyze and ...
List of reagent testing color charts. It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2] For this reason it is essential to use multiple different tests to show all adulterants.
The first number-one song published in the chart issue dated January 26, 2013, was "Scream & Shout" by will.i.am and Britney Spears, [9] a position it held for 5 consecutive weeks. [1] [10] As of the issue dated May 25, 2024, "Miles on It" by Marshmello and Kane Brown is the current number one.
The APCO phonetic alphabet, a.k.a. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and ...
The North American College and Community Chart. The North American College and Community Radio Chart, often abbreviated as NACC, is a weekly Top 200 radio chart launched in January 2017. [1] As of 2018, the NACC chart receives weekly airplay reports from over 200 radio stations across North America. [2] [3]
For the distinction between [ ], / / and , see IPA § Brackets and transcription delimiters. The following is the chart of the International Phonetic Alphabet, a standardized system of phonetic symbols devised and maintained by the International Phonetic Association. It is not a complete list of all possible speech sounds in the world's ...
1993: split to create 905. 2001: overlaid by 647. 2013: overlaid by 437. 2025: overlaid by 942. area code 387 is reserved as a fifth code for the region. 417. Missouri ( Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern Missouri) 1950. created from parts of the area codes 314 and 816.
Download as PDF; Printable version; This is a list of all airline codes. The table lists the IATA airline designators, the ICAO airline designators and the airline ...
Retrieved March 18, 2020. ^ "週間 CDシングルランキング 2020年03月30日付" [Weekly CD Single Ranking for March 30, 2020] (in Japanese). Oricon. Retrieved March 25, 2020. ^ "週間 CDシングルランキング 2020年04月06日付" [Weekly CD Single Ranking for April 6, 2020] (in Japanese). Oricon. Retrieved April 1, 2020 ...