(DoD, NATO) A call sign assigned in accordance with the provisions of the International Telecommunications Union to identify a radio station. The nationality of the radio station is identified by the first or the first two characters. (When used in visual signaling, international call signs are referred to as "signal letters.") See also call sign.
Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.
| APA | Military Dictionary (DoD). (2011). international call sign. Retrieved September 23, 2026, from http://smartdefine.org/international_call_sign/definitions/1962283 |
| Chicago | Military Dictionary (DoD). 2011. "international call sign" http://smartdefine.org/international_call_sign/definitions/1962283 (accessed September 23, 2026). |
| Harvard | Military Dictionary (DoD) 2011, international call sign, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/international_call_sign/definitions/1962283>. |
| MLA | Military Dictionary (DoD). "international call sign" 4 April 2011. Web. 23 September 2026. <http://smartdefine.org/international_call_sign/definitions/1962283> |