|  | H |
SECTION H — ELECTRICITY

|  | H04 |
ELECTRIC COMMUNICATION TECHNIQUE

|  | H04H |
BROADCAST COMMUNICATION (transmission in general Fulltext... Hierarchy... Expanded...H04B; multiplex communication Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...H04J)

|  | H04H 7/00 |
Studio equipment (for television Fulltext... Hierarchy... Expanded...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