H
SECTION H — ELECTRICITY
 H04
ELECTRIC COMMUNICATION TECHNIQUE
 H04H
BROADCAST COMMUNICATION (transmission in general H04B; multiplex communication H04J)
 H04H

Note(s)

This sub-class deals with (a) the distribution of entertainment or informative matter simultaneously to a number of receiving stations over transmission lines or over radio waves, and (b) the recording of the use made of the broadcast service.

 H04H 1/00
Broadcast distribution systems
 H04H 1/02
·  Wired systems
 H04H 1/04
·  ·  using carrier waves
 H04H 1/06
·  ·  ·  having frequencies in two or more frequency bands, e.g. medium wave and VHF
 H04H 1/08
·  ·  ·  combined with telephone network over which the broadcast is continuously available (telephone systems in general H04M)
 H04H 1/10
·  ·  using signals not modulated on a carrier
 H04H 1/12
·  ·  ·  not sharing the network with any other service
 H04H 1/14
·  ·  combined with power distribution network
 H04H 3/00
Common-wave systems, i.e. using separate transmitters operating on substantially the same frequency
 H04H 5/00
Stereophonic broadcast systems (multiplex systems in general H04J)
 H04H 7/00
Studio equipment (for television H04N); Interconnection of studios
 H04H 7/02
·  Mobile studios
 H04H 7/04
·  Monitoring programmes
 H04H 9/00
Recording the use made of the broadcast service