| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Indefinite call sign | Business | 1) A call sign that represents a group of facilities, commands, authorities, activities, or units rather than one of these. 2) In radio communications, a call sign that does not identify a station and that is used in the call-up signal or in a message that has the station call sign encrypted in the text. (references) | |
| Indefinite call sign | Military | (DOD, NATO) A call sign which does not represent a specific facility, command, authority, activity, or unit, but which may represent any one or any group of these. See also call sign. (references) | |
| Indefinite call sign | Military & Defense | A call sign which does not represent a specific facility, command, authority, activity, or unit, but which may represent any one or any group of these. Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
