Radio beacon - Dual carrier

4-2-045

Dual carrier radio beacon

A continuous carrier radio beacon in which identification is accomplished by means of a keyed second carrier. The frequency difference between the two carriers is made equal to the desired audio frequency.

Note: The object of the system is to reduce the bandwidth of the transmission.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English