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  2. Wireless speaker - Wikipedia

    en.wikipedia.org/wiki/Wireless_speaker

    Recent models generally use Bluetooth 4.0 or even Bluetooth 5, and wireless speakers generally have a range of 10 meters. [4] Bluetooth devices use a radio communication frequency such that the devices do not have to be in a visual line of sight with each other. Some speakers may benefit from the NFC system to facilitate pairing with the source ...

  3. Uniden - Wikipedia

    en.wikipedia.org/wiki/Uniden

    Uniden was established on February 7, 1966, by its founder Hidero Fujimoto as "Uni Electronics Corp". Uniden became a well-known brand in the 1970s by manufacturing and marketing millions of citizens band radios (CB), under the Uniden brand as well as other companies such as Midland and Realistic, which rebranded the equipment under their own labels.

  4. List of Bose portable audio products - Wikipedia

    en.wikipedia.org/wiki/List_of_Bose_portable...

    The portable audio products sold by Bose Corporation have been marketed as portable smart speaker and SoundLink. These wireless speaker systems are battery powered and play audio over a wireless connection from a separate source device (such as a computer or smartphone). Most Soundlink models use Bluetooth to communicate with the source device.

  5. DECT - Wikipedia

    en.wikipedia.org/wiki/DECT

    This codec is designed for high-quality voice and music applications such as wireless speakers, headphones, headsets, and microphones. LC3plus supports scalable 16-bit narrowband, wideband, super wideband, fullband, and 24-bit high-resolution fullband and ultra-band coding, with sample rates of 8, 16, 24, 32, 48 and 96 kHz and audio bandwidth ...

  6. Short-range device - Wikipedia

    en.wikipedia.org/wiki/Short-range_device

    1795–1800 MHz: Individual licence required 169.4000–169.4750 MHz: Aids for the hearing impaired. Individual licence may be required 169.4875–169.5875 MHz: Aids for the hearing impaired. Individual licence may be required Annex 11. Radio frequency identification applications 2446–2454 MHz 2446–2454 MHz: 865.0–865.6 MHz 865.6–867.6 MHz

  7. 2.4 GHz radio use - Wikipedia

    en.wikipedia.org/wiki/2.4_GHz_radio_use

    Bluetooth devices intended for use in short-range personal area networks operate from 2.4 to 2.4835 GHz. To reduce interference with other protocols that use the 2.45 GHz band, the Bluetooth protocol divides the band into 80 channels (numbered from 0 to 79, each 1 MHz wide) and changes channels up to 1600 times per second.

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