high-frequency direction finder

См. также в других словарях:

• direction finder — direction finding. Radio. a receiver with a loop antenna rotating on a vertical axis, used to ascertain the direction of incoming radio waves. [1910 15] * * * ▪ instrument or  radio direction finder        radio receiver and antenna system for… …   Universalium

• direction finder — A radio receiver equipped with a directional sensing antenna used to take bearings on a radio transmitter. Specialized radio direction finders are used in aircraft as air navigation aids. Others are ground based, primarily to obtain a “fix” on a… …   Aviation dictionary

• Radio direction finder — Civil Air Patrol members practice using a handheld radio direction finder to locate an emergency locator transmitter …   Wikipedia

• Direction finding — (DF) refers to the establishment of the direction from which a received signal was transmitted. This can refer to radio or other forms of wireless communication. By combining the direction information from two or more suitably spaced receivers… …   Wikipedia

• Medium frequency — Frequency range 0.3 to 3 MHz ITU Radio Band Numbers 1 2 3 4 5 6 7 8 9 10 …   Wikipedia

• Huff-Duff — High frequency direction finder is usually known by its acronym HF/DF, pronounced Huff Duff. This has become the common name for this type of radio direction finder, and was coined during World War II.The idea of using two or more radio receivers …   Wikipedia

• Signals intelligence — SIGINT redirects here. For the UNIX signal, see SIGINT (POSIX). RAF Menwith Hill, a large site in the United Kingdom, part of ECHELON and the UK USA Security Agreement. Signals intelligence (often contracted to SIGINT) is intelligence gathering… …   Wikipedia

• List of World War II electronic warfare equipment — This is a List of World War II electronic warfare equipment and code words and tactics derived directly from the use of electronic equipment.Equipment and code words*AI (Airborne Interception) British night fighter radars *Airborne Cigar (A.B.C.) …   Wikipedia

• OP-20-G — Active July 1, 1922 July 10, 1946 Allegiance United States Branch US Navy Type Code and Signal Section Role Signals intelligence …   Wikipedia

• Bataille De L'Atlantique (1939-1945) — Pour les articles homonymes, voir Bataille de l Atlantique. Seconde bataille de l Atlantique …   Wikipédia en Français

• Bataille de l'Atlantique (1940) — Bataille de l Atlantique (1939 1945) Pour les articles homonymes, voir Bataille de l Atlantique. Seconde bataille de l Atlantique …   Wikipédia en Français