A signal fire to notify of the approach of an enemy, or to give any notice, commonly of warning.

A signal, such as that from a lighthouse, or a conspicuous mark erected on an eminence near the shore, or moored in shoal water, as a guide to mariners.

A high hill near the shore.

a radio transmitter which emits a characteristic signal indication its location, so that vehicles may determine their exact location by locating the beacon with a radio compass; -- also called radio beacon.

A device to assist in monitoring multicast transmissions.

Low-power carrier generated by an auxiliary transmitter. May be unmodulated for propagation tests or tracking, or modulated with telemetry or tracking data.

Relatively low-power carrier transmitted by a satellite, allowing the controlling engineers on Earth to monitor telemetry data or track the satellite.

Equipement (more properly known as a Platform) including a radio transmitter, antenna, power supply and , possibly, sensors. The Argos system monitors over 7000 beacons, worldwide.

To give light to, as a beacon; to light up; to illumine.

any fixed lighted or unlighted daymark.

a strong rotating light located at an airport

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

A special frame used by media access control to announce to the other stations that the ring is broken. The resulting action attempts to restructure the network to account for the probable fault.

a mid-size, unisex frame with a rectangular, boxy shape and subtle surface design features that make it an all around, style-driven, performance piece

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. See also failure domain.

In a token ring network, a frame sent by a token ring adapter to indicate a serious ring problem, such as a broken cable. An adapter is said to be beaconing if it is sending such a frame. The problem must be resolved for communications to resume.

A small transparent 1x1 pixel image that is show to web users to track their progress or actions in an ad campaign or other web site activity.

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 hidden link to a one pixel transparent image

Français : Balise Deutsch : Bake, Ortsbake

A navigation stake or a pole in a waterway. Balise or fiche in French.

A stake, or something similar, that is used to indicate caution in an area or to aid in navigation.