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  2. Foster scanner - Wikipedia

    en.wikipedia.org/wiki/Foster_scanner

    The Foster scanner consists of two parts; a box-shaped antenna and the "scanner" itself. These are normally placed in front of a shaped reflector.. The antenna consists of a thin rectangular section of a parabolic antenna, as if one cut the sides away from a conventional parabolic antenna, leaving only the thin strip where the feed horn is mounted.

  3. ATSC tuner - Wikipedia

    en.wikipedia.org/wiki/ATSC_tuner

    If the auto scan does not pick up the signal and the tuner has manual frequency scan capability try to get the actual frequency from the station engineer. This may allow one to stay on one frequency (channel) versus "scanning" (moving too quickly through) and allow one to make antenna adjustments while observing only a problematic channel.

  4. Radio repeater - Wikipedia

    en.wikipedia.org/wiki/Radio_repeater

    Putting the receive antenna at the top helps to capture weaker received signals than if the receive antenna were lower of the two. By splitting the received signal from the antenna, many receivers can work satisfactorily from a single antenna. Devices called receiver multicouplers split the signal from the antenna into many receiver connections ...

  5. Radio scanner - Wikipedia

    en.wikipedia.org/wiki/Radio_scanner

    An Icom IC-R5 hand-held scanner A GMRS radio that also has scanning capabilities. A scanner (also referred to as a radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.

  6. Television antenna - Wikipedia

    en.wikipedia.org/wiki/Television_antenna

    The television broadcast bands are too wide in frequency to be covered by a single antenna, so the two options are separate antennas used for the VHF and UHF bands or a combination (combo) VHF/UHF antenna. [6] A VHF/UHF antenna combines two antennas feeding the same feedline mounted on the same support boom.

  7. Amateur television - Wikipedia

    en.wikipedia.org/wiki/Amateur_television

    2.4175 GHz is used for ATV links. 2.4415 GHz is the band's most used FM ATV frequency. A 6.0 MHz audio sub-carrier and 4 MHz deviation are used. The 9 centimeter (3.4 GHz) and 5 centimeter (5.8 GHz) bands have ATV links in some areas. On the 3-centimeter band, 10.4 GHz is a wideband FM channel, and it may be used as an ATV repeater input.

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