There are about 5000 languages spoken in the World today (estimates vary) and a variety of these languages can be heard on Shortwave radio broadcasts. Although few people can master large numbers of foreign languages, it is possible for anyone to recognise languages, without an in-depth knowledge of them, from their characteristics.
Language recognition is a great help in identifying shortwave
radio stations and this working aid aims to help you identify
languages commonly heard on the air by providing a wealth of
information about them.

The following is a selection of language families that have been identified by linguists: