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  2. Antenna rotator - Wikipedia

    en.wikipedia.org/wiki/Antenna_rotator

    An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed near the equipment which the antenna is connected to, while the rotator is mounted on the antenna ...

  3. Surge protector - Wikipedia

    en.wikipedia.org/wiki/Surge_protector

    Surge Protection Device (SPD) for installation in a low-voltage distribution board. A surge protector (or spike suppressor, surge suppressor, surge diverter, [1] surge protection device (SPD), transient voltage suppressor (TVS) or transient voltage surge suppressor (TVSS)) is an appliance or device intended to protect electrical devices in alternating current (AC) circuits from voltage spikes ...

  4. Counter-IED equipment - Wikipedia

    en.wikipedia.org/wiki/Counter-IED_equipment

    The jamming system is equipped with 8 wideband transmitters, 3 low-pass filters, 1 combiner, 6 omni-directional antennas and 8 wide-band digital exciters. The higher level of jamming efficiency is accomplished by using more parallel subsystems and digital technology.

  5. Magnetic switchable device - Wikipedia

    en.wikipedia.org/wiki/Magnetic_switchable_device

    A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...

  6. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    Loop antennas ("magnetic" antennas) [b] Loops are ring-like antennas made out of segments of wire or metal tubing bent into a circle or polygon – any regular or irregular two-dimensional figure that closes in on itself.

  7. Whip antenna - Wikipedia

    en.wikipedia.org/wiki/Whip_antenna

    The whip antenna is a monopole antenna, and like a vertical dipole has an omnidirectional radiation pattern, radiating equal radio power in all azimuthal directions (perpendicular to the antenna's axis), with the radiated power falling off with elevation angle to zero on the antenna's axis. [1]