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2. List of WLAN channels - Wikipedia

   en.wikipedia.org/wiki/List_of_WLAN_channels

   Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.

3. Wireless Set Number 10 - Wikipedia

   en.wikipedia.org/wiki/Wireless_Set_Number_10

   The British Army 's Wireless Set, Number 10, was the world's first microwave relay telephone system. [1] It transmitted eight full-duplex (two-way) telephone channels between two stations limited only by the line-of-sight, often on the order of 25 to 50 miles (40 to 80 km). The stations were mounted in highly mobile trailers and were set up ...

4. Low-density parity-check code - Wikipedia

   en.wikipedia.org/wiki/Low-density_parity-check_code

   LDPC codes functionally are defined by a sparse parity-check matrix. This sparse matrix is often randomly generated, subject to the sparsity constraints—LDPC code construction is discussed later. These codes were first designed by Robert Gallager in 1960. Below is a graph fragment of an example LDPC code using Forney's factor graph notation.

5. Mobile network codes in ITU region 3xx (North America)

   en.wikipedia.org/wiki/Mobile_network_codes_in...

   Former Cook Inlet West Wireless, Voicestream; now universal USA code. Also used for Mint Mobile, [126] Ting . [70] UMTS shut down July 2022, [127] GSM to shut down Apr 2024.

6. Home Office radio - Wikipedia

   en.wikipedia.org/wiki/Home_Office_radio

   Home Office radio was the VHF and UHF radio service provided by the British government to its prison service, emergency service ( police, ambulance and fire brigade) and Home Defence agencies from around 1939. The departmental name was the Home Office Directorate of Telecommunications, commonly referred to as DTELS.

7. Aio Wireless - Wikipedia

   en.wikipedia.org/wiki/Aio_Wireless

   Mobile phones, Tablets, Mobile broadband devices. Services. Wireless communications. Parent. AT&T Inc. Website. aiowireless .com. Aio Wireless (pronounced / eɪ.oʊ / "A-O" Wireless) was a prepaid wireless service provider in the United States, wholly owned by AT&T Inc., launched in May 2013. [1] [2] [3]