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Chumby Industries Logo A Chumby in the middle of downloading software. The Chumby was a consumer electronics product formerly made by Chumby Industries, Inc. It is an embedded computer which provides Internet and LAN access via a Wi-Fi connection.
The TSF is based on a 1-MHz clock and "ticks" in microseconds. On a commercial level, industry vendors assume the 802.11 TSF's synchronization to be within 25 microseconds [ citation needed ] . Timing synchronization is achieved by stations periodically exchanging timing information through beacon frames.
The first Philco radios were introduced in mid-1928, and 96,000 were produced that year, making Philco radios 26th in the nation in production volume. [8] Up to that time most radios were handmade and priced for relatively wealthy consumers. Atwater Kent, the leading radio seller, coincidentally was also located in Philadelphia.
A bedside clock radio that combines a radio receiver with an alarm clock. Radios are manufactured in a range of styles and functions: Console radio - A self-contained radio with speaker designed to stand on the floor. Table radio also called a "Mantel radio" - A self-contained radio with speaker designed to sit on a table, cabinet, or fireplace ...
Fixed wireless is the operation of wireless communication devices or systems used to connect two fixed locations (e.g., building to building or tower to building) with a radio or other wireless link, such as laser bridge. [1] Usually, fixed wireless is part of a wireless LAN infrastructure. The purpose of a fixed wireless link is to enable data ...
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.
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Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection.