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  2. Two-way radio - Wikipedia

    en.wikipedia.org/wiki/Two-way_radio

    Naval air traffic controller communicates with aircraft over a two-way radio headset A variety of portable handheld two-way radios for private use. A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, [1] in contrast to a broadcast receiver ...

  3. List of common display resolutions - Wikipedia

    en.wikipedia.org/wiki/List_of_common_display...

    This bit of marketing obfuscation is calculated as horizontal resolution × vertical resolution × 3. For example: 640 × 480 VGA is 921,600 subpixels, or 307,200 pixels, 800 × 600 SVGA is 1,440,000 subpixels, or 480,000 pixels, and 1024 × 768 XGA is 2,359,296 subpixels, but only 786,432 full-color pixels. ^ Apple Computer 1 megapixel standard.

  4. Display aspect ratio - Wikipedia

    en.wikipedia.org/wiki/Display_aspect_ratio

    The display aspect ratio (DAR) is the aspect ratio of a display device and so the proportional relationship between the physical width and the height of the display. It is expressed as two numbers separated by a colon (x: y), where x corresponds to the width and y to the height. Common aspect ratios for displays, past and present, include 5:4 ...

  5. Radiotelephone - Wikipedia

    en.wikipedia.org/wiki/Radiotelephone

    Radiotelephone. Comparison of an amateur radio handheld transceiver, cell phone, and matchbox. A radiotelephone (or radiophone), abbreviated RT, [1] is a radio communication system for conducting a conversation; radiotelephony means telephony by radio. It is in contrast to radiotelegraphy, which is radio transmission of telegrams (messages), or ...

  6. Radio repeater - Wikipedia

    en.wikipedia.org/wiki/Radio_repeater

    Radio repeater. A radio repeater is a combination of a radio receiver and a radio transmitter that receives a signal and retransmits it, so that two-way radio signals can cover longer distances. A repeater sited at a high elevation can allow two mobile stations, otherwise out of line-of-sight propagation range of each other, to communicate. [1]

  7. Display resolution standards - Wikipedia

    en.wikipedia.org/wiki/Display_resolution_standards

    A display resolution standard is a commonly used width and height dimension (display resolution) of an electronic visual display device, measured in pixels. This information is used for electronic devices such as a computer monitor. Certain combinations of width and height are standardized (e.g. by VESA [1][2]) and typically given a name and an ...

  8. One Piece (1999 TV series) - Wikipedia

    en.wikipedia.org/wiki/One_Piece_(1999_TV_series)

    One Piece (1999 TV series) One Piece. (1999 TV series) One Piece (stylized in all caps) is a Japanese anime television series produced by Toei Animation that premiered on Fuji TV in October 1999. It is based on Eiichiro Oda 's manga series of the same name. The story follows the adventures of Monkey D. Luffy, a boy whose body gained the ...

  9. Radio - Wikipedia

    en.wikipedia.org/wiki/Radio

    An antenna farm hosting various radio antennas on Sandia Peak near Albuquerque, New Mexico, US. Radio is the technology of communicating using radio waves. [1][2][3] Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an ...