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The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.
The Philippine Amateur Radio Association Inc. (PARA) is a national non-profit organization for amateur radio enthusiasts in the Philippines.Key membership benefits of PARA include the sponsorship of amateur radio operating awards and radio contests, and a QSL bureau for those members who regularly communicate with amateur radio operators in other countries.
A radio magnetic indicator (RMI) is an alternate ADF display providing more information than a standard ADF. While the ADF shows relative angle of the transmitter with respect to the aircraft, an RMI display incorporates a compass card, actuated by the aircraft's compass system, and permits the operator to read the magnetic bearing to or from ...
A coherer detector, useful only for Morse code signals. In radio, a detector is a device or circuit that extracts information from a modulated radio frequency current or voltage. The term dates from the first three decades of radio (1888–1918).
Philippines: assault rifle: 5.56×45mm NATO: M16A1 >30,000 Current standard-issue rifle, either made by Colt USA or Elisco Tool (Elitool) Philippines. 30,000 units were handed-over to the PNP on loan from the Armed Forces of the Philippines, several are with the PNP-SAF. Norinco CQ China: assault rifle: 5.56×45mm NATO: CQ-A5b 6000 [67] [68]
Electronic article surveillance antennas at an H&M store in Torp shopping mall, Sweden. Electronic article surveillance (EAS) is a type of system used to prevent shoplifting [1] from retail stores, pilferage of books from libraries, or unwanted removal of properties from office buildings.
A magnetic anomaly detector (MAD) is an instrument used to detect minute variations in the Earth's magnetic field. [1] The term typically refers to magnetometers used by military forces to detect submarines (a mass of ferromagnetic material creates a detectable disturbance in the magnetic field ).
A pole piece attaches to and in a sense extends a pole of the magnet, hence the name. Pole pieces are used with both permanent magnets and electromagnets. In the case of an electromagnet, the pole piece or pieces simply extend the magnetic core and can even be regarded as part of it, particularly if they are made of the same material. In the ...