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  2. Amateur television - Wikipedia

    en.wikipedia.org/wiki/Amateur_television

    Amateur television (ATV) is the transmission of broadcast quality video and audio over the wide range of frequencies of radio waves allocated for radio amateur (Ham) use. [1] ATV is used for non-commercial experimentation, pleasure, and public service events.

  3. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.

  4. List of amateur radio transceivers - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio...

    [24] [25] [26] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters, with the exception of the 1.25 meters band, and the "X" model also has built-in 23 centimeters band capability option. Kenwood discontinued production of the TS ...

  5. 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 ...

  6. Land mobile radio system - Wikipedia

    en.wikipedia.org/wiki/Land_mobile_radio_system

    A land mobile radio system (LMRS) is a person-to-person voice communication system consisting of two-way radio transceivers (an audio transmitter and receiver in one unit) which can be stationary (base station units), mobile (installed in vehicles), or portable (handheld transceivers e.g. "walkie-talkies").

  7. List of software-defined radios - Wikipedia

    en.wikipedia.org/.../List_of_software-defined_radios

    Relies on a computing asset with sound device to process I and Q input and output Yes, HDSDR, PowerSDR Yes, Quisk, Linrad, GNU Radio Yes, various software Hunter SDR [62] Kit 2.5 – 30 MHz (1 – 30 MHz typ.) ext External ADC required (I/Q output) ? USB Yes No No Icom IC-7610 [63] Pre-built RX: 0.030 - 60 MHz. TX: differs between regional ...

  8. Amateur radio frequency allocations - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_frequency...

    Amateur television (ATV) is the hobby of transmitting broadcast-compatible video and audio by amateur radio. It also includes the study and building of such transmitters and receivers and the propagation between these two. In NTSC countries, ATV operation requires the ability to use

  9. Transverter - Wikipedia

    en.wikipedia.org/wiki/Transverter

    A transverter for ATV operation on 5.7 GHz. In radio engineering, a transverter is a radio frequency device that consists of an upconverter and a downconverter in one unit. . Transverters are used in conjunction with transceivers to change the range of frequencies over which the transceiver can commu

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