
1) Broadcasting
Found on
https://www.crosswordclues.com/clue/narrowcasting

Narrowcasting has traditionally been understood as the dissemination of information (usually via Internet, radio, or television) to a narrow audience; not to the broader public at-large. Also called niche marketing or target marketing, narrowcasting involves aiming media messages at specific segments of the public defined by values, preferences, d...
Found on
http://en.wikipedia.org/wiki/Narrowcasting

Using a broadcast medium to appeal to audiences with special interests. For example, the 'All Knitting Station' would be a narrowcast, because it appeals to an audience with a specific interest.
Found on
http://www.encyclo.co.uk/local/21023

Transmission of information, entertainment etc to a limited audience often sharing a specific interest or locality.
Found on
http://www.thenewsmanual.net/Resources/glossary.html

Producing and designing media content in order to target a highly specific segment of the audience. Narrowcasting is often practiced by magazines, radio stations and cablecasters. Opposite of broadcasting.
Found on
https://www.encyclo.co.uk/local/22469
No exact match found.