co-frequency operation
21Operation Northwoods — For the forests of the subarctic, see Taiga and Boreal forest. Operation Northwoods memorandum (13 March 1962).[1] Operation Northwoods was a series of false flag proposals that originated within the United States governme …
22Operation Biting — Coordinates: 49°40′16.06″N 0°09′42.60″E / 49.6711278°N 0.161833°E / 49.6711278; 0.161833 …
23Operation Snow White — Grand Jury Charges, Introduction, United States of America v. Mary Sue Hubbard , United States District Court for the District of Columbia, 1979. Operation Snow White was the Church of Scientology s name for a conspiracy during the 1970s to purge …
24Operation Looking Glass — The Boeing E 6 Mercury Looking Glass. Looking Glass (or Operation Looking Glass) is the code name for an airborne command center currently operated by the U.S. Navy. It provides command and control of U.S. nuclear forces in the event that ground… …
25Operation Gordian Knot — The Operation Gordian Knot (Operação Nó Górdio) was the largest and most expensive Portuguese military campaign in the Portuguese overseas province of Mozambique, East Africa. It was performed in 1970, during the Portuguese Colonial War… …
26Operation Totem — Obelisk at the Totem One test site Operation Totem was a pair of British atmospheric nuclear tests which took place on 15th October 1953. The only ones conducted at a temporary site in Australia, Emu Field, they followed the Operation Hurricane… …
27Operation RAFTER — RAFTER was a code name for the MI5 radio receiver detection technique, mostly used against clandestine Soviet agents and monitoring of domestic radio transmissions by foreign embassy personnel from the 1950s on. Contents 1 Explanation 2 Soviet… …
28Utility frequency — The waveform of 230 volt, 50 Hz compared with 110 V, 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (ac, also AC) is transmitted from a… …
29Variable-frequency drive — A variable frequency drive (VFD) is a system for controlling the rotational speed of an alternating current (AC) electric motor by controlling the frequency of the electrical power supplied to the motor.cite book | first=Sylvester J. |… …
30Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · …
