Every channel that appears on your TV, radio etc has its own transmitter, that converts the incoming signal from the studio to an RF signal (Radio Frequency).
The towers that are around often have many antennas on them, often radio, TV stations, taxi companies, Telco's and lots of other businesses will lease space on a single tower to mount their communication equipment.
Well, that's not quite accurate with digital TV. Each 'channel' can be part of a multiplexed stream on a transponder. Maybe the terms are different between terrestrial TV and satellite, but DVB over satellite uses a transponder that is broken up into different streams.
In theory, in an area that does not justify multiple transmitters you could run a number of competing channels, i.e. 7,9, and 10 over the same frequency.
Thats assuming that they are prepared to co-operate and share the costs... but in reality it's like any commercial business, can you imagine Coles and Woolworths sharing the same truck with half a load for each? Or Ford and Holden producing a 'standard' engine to be used by both makers?
Yes there is some 'professional' sharing of things between Broadcast companies..... but not much (based on my 30+ years being employed in the Broadcast industry)
Yeah, I agree. It wouldn't be an easy thing to share a resource like that. I wonder if they do do this in some remote areas though? If you are in the middle of nearly nowhere do you setup 5 separate transponders? Or do they just use satellite TV?
Happening right now it's called 'Agrigation' it's where a private company owns, maintains, the Tx sites and infrastructure and leases that to the networks.
Happening right now it's called 'Agrigation' it's where a private company owns, maintains, the Tx sites and infrastructure and leases that to the networks.
Aggregation? It makes sense. Share the infrastructure costs and maintenance costs.