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2. 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.

3. Wireless network interface controller - Wikipedia

   en.wikipedia.org/wiki/Wireless_network_interface...

   A wireless network interface controller (WNIC) is a network interface controller which connects to a wireless network, such as Wi-Fi, Bluetooth, or LTE (4G) or 5G rather than a wired network, such as an Ethernet network. A WNIC, just like other NICs, works on the layers 1 and 2 of the OSI model and uses an antenna to communicate via radio waves.

4. FM transmitter (personal device) - Wikipedia

   en.wikipedia.org/wiki/FM_transmitter_(personal...

   A personal FM transmitter is a low-power FM radio transmitter that broadcasts a signal from a portable audio device (such as an MP3 player or a smartphone) to a standard FM radio. Most of these transmitters plug into the device's headphone jack and then broadcast the signal over an FM broadcast band frequency, so that it can be picked up by any ...

5. Radio - Wikipedia

   en.wikipedia.org/wiki/Radio

   The laptop shows its own photo Wireless LAN (wireless local area network or Wi-Fi) – based on the IEEE 802.11 standards, these are the most widely used computer networks, used to implement local area networks without cables, linking computers, laptops, cell phones, video game consoles, smart TVs and printers in a home or office together, and ...

6. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   For example, music can be streamed from a mobile phone, laptop, or desktop to a wireless headset, hearing aid/cochlear implant streamer, or car audio; voice can be streamed from a microphone device to a recorder on a mobile phone or computer. [1] The Audio/Video Remote Control Profile (AVRCP) is often used in conjunction with A2DP for remote ...

7. Vehicle audio - Wikipedia

   en.wikipedia.org/wiki/Vehicle_audio

   Subwoofers: These speakers are designed to reproduce low-frequency sounds, particularly bass. They come in various sizes and power levels, and can be used to enhance the bass in a car audio system. Mid-range speakers: These speakers are designed to reproduce mid-range frequencies, such as vocals and instruments like guitars and pianos.