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v. t. e. Amateur radio call signs are allocated to amateur radio operators around the world. The call signs are used to legally identify the station or operator, with some countries requiring the station call sign to always be used and others allowing the operator call sign instead. [1]
The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army-Navy Nomenclature System (AN System. JAN) and the Joint Communications-Electronics Nomenclature System , is a method developed by the U.S. War Department during World War II for assigning an unclassified designator to electronic equipment.
- 9 May 1957
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A reference designator unambiguously identifies the location of a component within an electrical schematic or on a printed circuit board. The reference designator usually consists of one or two letters followed by a number, e.g. C3, D1, R4, U15. The number is sometimes followed by a letter, indicating that components are grouped or matched with ...
DesignatorComponent TypeASeparable assembly or sub-assembly (e.g.ATAttenuator or isolatorBRBridge rectifier (four diodes in a ...BTJan 18, 2016 · Sets, subsystems and systems are designated by the well-known “AN” nomenclature. All designations are prefixed by “AN/”. Originally, this stood for “Army-Navy”, but this interpretation is no longer valid. Nowadays, “AN/” is simply an indicator for the JETDS. In non-official references to electronic equipment, the “AN ...
The origins ofamateur radio call signs go back to the earliest days of radio, informally atfirst, then more formalized as major world events transpired that changed theface of amateur radio itself. Thisevolution can be broken down into five distinct periods of history: 1) The PioneerYears, pre - 1918.
Nov 15, 2022 · Does the story of letters and band designations end here? No, it does not. NATO, the European Union, and US military radar specialists used a different set of letter designations primarily for radar and electronic countermeasure (ECM) applications before standardization by the ITU and IEEE.
May 13, 2016 · Emission Types. 1 An emission designator. 2 Necessary Bandwidth. 2.1 Examples: 3 Modulation Types (5th Character) 4 Nature of Signal (s) Modulating the Main Carrier – Sixth Character. 5 Type of Information to be Transmitted – Seventh Character. 6 Common Emission Designations. 7 Identified Emission Designators.
