How do digital signals differ from analogue signals?
Digital TV signals differ from the old analogue signals in two significant ways, making your choice of aerial crucial. Firstly, a weak analogue signal often means grainy pictures and annoying interference. This may be irritating but is sometimes still watch-able. However, a weak digital TV signal often means no picture at all. Secondly digital TV channels are broadcast in groups called multiplexes, instead of individually (as on analogue TV). If a group can’t be received, that means missing out on a dozen or more channels. Fortunately our Best Buys are good at picking up both weak signals and a wide spread of channel groups.
Related Questions
- Does DRM have a "simulcast" mode that allows simultaneous transmission of analogue and digital signals in the same channel and will existing analogue receivers work with it?
- Why can more information be carried by digital signals than analogue signals?
- How do digital signals differ from analogue signals?
