See: Boston Exchange Automated Communication Order-Routing Network

Old English beacen "sign, portent, lighthouse," from West Germanic *baukna "beacon, signal" (source also of Old Frisian baken, Old Saxon bokan, Old High German bouhhan); not found [..]

Beacon [N] [S]a pole (Heb. to'ren) used as a standard or ensign set on the tops of mountains as a call to the people to assemble themselves for some great national purpose ( Isaiah 30:17 ). In Is [..]

guiding landmark or signal, especially one in an elevated position.

signal.

Frame from a Token Ring or FDDI device indicating a serious problem with the ring, such as a broken cable. A beacon frame contains the address of the station assumed to be down.

Stationary transmitter that emits signals in all directions (also called a non-directional beacon). In DGPS, the beacon transmitter also broadcasts pseudorange correction data to nearby GPS receivers [..]

a signalling light, like a bonfire or lighthouse

See radiobeacon station.

a pole (Heb. to'ren) used as a standard or ensign set on the tops of mountains as a call to the people to assemble themselves for some great national purpose (Isa. 30:17). In Isa. 33:23 and Ezek. [..]

A signal or conspicuous mark erected on an eminence for direction. (Isaiah 30:17)

Beacons are small, often inexpensive devices that enable more accurate location within a narrow range than GPS, cell tower triangulation and Wi-Fi proximity. Beacons transmit small amounts of data via [..]

shaynturem

Token ring

A network signal that identifies the node upstream from a failed node.

See Sonde

An element on a publisher’s website that is invisible to users while it gathers information. AKA “tracking pixels.”

A beacon is transmitted by an AP ten times per second, and advertises the existence of the AP on a particular channel or channels. It includes information needed by clients to associate and may include the ESSID, the supported channels and data rates, and whether it is open or requires authentication.

sometimes called web bug, is a snooping scheme pioneered by Yahoo. A piece of HTML (Hypertext Markup Language) in an email message reports back to the sender when the mail is viewed. The term is used [..]

(n) a fire (usually on a hill or tower) that can be seen from a distance(n) a radio station that broadcasts a directional signal for navigational purposes(n) a tower with a light that gives warning of [..]

an acoustic signaling device that continually sends out a repetitive signal. Acoustic beacons, sometimes called pingers, are used to mark the locations of underwater objects.

 - In wireless networking, a beacon is a packet sent by a connected device to inform other devices of its presence and readiness.

A fixed artificial navigational mark, sometimes called a daybeacon in the USA and Canada. It can be recognised by means of its shape, colour, pattern or topmark. It may carry a light, radar reflector [..]

 A snippet of code placed in an ad, on a Web page, or in an email which helps measure whether the ad, page or email was delivered to the browser and to track actions in general. Also known as a clear GIF or pixel tag.  

A device, usually based on the ground, that aids in determining position or direction;

Low-power carrier transmitted by a satellite which supplies the controlling engineers on the ground with a means of monitoring telemetry data, tracking the satellite or conducting propagation experiments.

A lighted or unlighted fixed aid to navigation attached directly to the earth's surface.

A lighted or unlighted fixed aid to navigation attached directly to the earth's surface. (Lights and daybeacons both constitute "beacons.")

A lighted or unlighted fixed aid to navigation attached directly to the earth’s surface.

A lighted or unlighted fixed (non:floating) aid to navigation that serves as a signal or indication for guidance or warning. (Lights and daybeacons both constitute "beacons.")

A lighted or unlighted fixed aid to navigation attached directly to the earth’s surface. (Lights and daybeacons both constitute beacons.)

A lighted or unlighted fixed aid to navigation attached directly to the earth’s surface. (Lights and daybeacons both constitute beacons.)

A lighted or unlighted fixed aid to navigation attached directly to the earth’s surface. (Lights and daybeacons both constitute beacons.)

Beacons are aids to navigation that are permanent structures attached to the bottom of a body of water, not floating or may be structures on shore. A beacon that has a light attached is simply referre [..]

A lighted or unlighted fixed (non-floating) aid to navigation that serves as a signal or indication for guidance or warning. (Lights and daybeacons both constitute "beacons.")

A lighted or unlighted fixed aid to navigation attached directly to the earth’s surface. (Lights and day beacons both constitute beacons).

A lighted or unlighted fixed aid to navigation attached directly to the earth's surface. (Lights and daybeacons both constitute beacons.)

Downlink from a spacecraft that immediately indicates the state of the spacecraft as being one of several possible states by virtue of the presence and/or frequency of the subcarrier. See Chapter 10. Bel -- Unit of ratio equal to ten decibels. Named in honor of telecommunications pioneer Alexander Graham Bell.

A device, usually based on the ground, that aids in determining position or direction;

Coded signal, either a rotating light (atop an obstacle or an airport tower) or a navigational radio (most often called an NDB for "non-directional beacon"). 

An energy signature given off by awakened individuals, and those that are about to awaken, It’s a way we can recognize our own. Beast

Most SETI research is concerned with the detection of an attention-getting "beacon" or acquisition signal, not a wideband data channel.

Beacons were used to signal long distances before the invention of the telegraph and telephone. They were often placed on hills with good views. In daytime the smoke of a fire would be used to make si [..]

A signal fire to notify of the approach of an enemy, or to give any notice, commonly of warning. * Gay *: No flaming beacons cast their blaze afar. (nautical) A signal or conspicuous mark erecte [..]

See: Boston Exchange Automated Communication Order-Routing Network