An avalanche transceiver is an electronic device that sends (transmits) a signal, and searches for signals from other transceivers to enable rescue in the event of a burial. It is considered one of the three avalanche essentials, along with a probe and shovel.
In send/transmit mode, it constantly emits a radio signal that is stronger at close range. If someone with a transceiver is buried, the other members of the group can switch their transceivers into search mode and follow a search pattern to locate the strongest signal.
To be effective, a transceiver must always be worn and in send/transmit mode when traveling in avalanche terrain. Transceivers are often referred to as beacons.
Photo: A transceiver check to see if everyone's transceivers are turned on and working should be performed at the start of any trip into avalanche terrain. By Mark Bender