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  2. Coupon-eligible converter box - Wikipedia

    en.wikipedia.org/wiki/Coupon-eligible_converter_box

    The box needed to output radio frequency signals (compatible with a television's antenna input), composite video, and stereo audio. It had to include a remote control, and be compatible with universal remotes. The units had to support both a 4:3 center crop of a 16:9 transmitted image, and a letterboxed rendition of a 16:9 transmitted image.

  3. Antenna amplifier - Wikipedia

    en.wikipedia.org/wiki/Antenna_amplifier

    In electronics, an antenna amplifier (also: aerial amplifier or booster) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead cable. An antenna amplifier boosts a radio signal considerably for devices that receive radio ...

  4. Cellular repeater - Wikipedia

    en.wikipedia.org/wiki/Cellular_repeater

    A cellular repeater (also known as cell phone signal booster or cell phone signal amplifier) is a type of bi-directional amplifier used to improve cell phone reception. [citation needed] A cellular repeater system commonly consists of a donor antenna that receives and transmits signal from nearby cell towers, coaxial cables, a signal amplifier, and an indoor rebroadcast antenna.

  5. Waveguide (radio frequency) - Wikipedia

    en.wikipedia.org/wiki/Waveguide_(radio_frequency)

    In radio-frequency engineering and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. [1] This type of waveguide is used as a transmission line mostly at microwave frequencies, for such purposes as connecting microwave transmitters and receivers to their antennas, in equipment such as microwave ovens, radar sets, satellite communications, and microwave ...

  6. Antenna tracking system - Wikipedia

    en.wikipedia.org/wiki/Antenna_tracking_system

    An antenna control unit utilizes the resulting difference signal to select the optimum signal strength for the particular step of the search pattern. This system is particularly applicable to extremely high frequency communication channels (86 GHz and above) which are subject to atmospheric distortion and noise .

  7. List of Falcon 9 first-stage boosters - Wikipedia

    en.wikipedia.org/wiki/List_of_Falcon_9_first...

    The last flight of a Block 4 booster was in June 2018. Since then all boosters in the active fleet are Block 5. Booster names are a B followed by a four-digit number. The first Falcon 9 version, v1.0, had boosters B0001 to B0007. All following boosters were numbered sequentially starting at B1001, the number 1 standing for first-stage booster.

  8. Holden Commodore (VN) - Wikipedia

    en.wikipedia.org/wiki/Holden_Commodore_(VN)

    The front suspension geometry was also modified to lower ride height by 35 mm for improved road handling. Inside, the car had power windows, central locking, electric antenna and four speaker radio cassette sound system. Suggested retail was $35,995 GTS and $37,295 GTS for the manual and automatic versions, respectively.

  9. iPhone 6 - Wikipedia

    en.wikipedia.org/wiki/IPhone_6

    The Verge considered the iPhone 6 to be "simply and cleanly designed" in comparison to the 5s, noting the phone still felt usable despite its larger size, but criticized the antenna plastic, the protruding camera lens (which prevents the device from sitting flat without a case), and the lack of additional optimization in the operating system ...