Nigel1943
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The radio digital switchover is on the cards and means basically our analogue car radios will become redundant. Any comments?
They will eventually turn the analogue systems off, probably when the BBC multiplex can claim 95% coverage of the UK. The commercial stations don't seem to be considered in the evaluation.They will not turn off analogue as FM is so much better than DAB
No they won't become redundant all the time someone is manufacturing low power FM modulators.The radio digital switchover is on the cards and means basically our analogue car radios will become redundant. Any comments?
I would just stop listening to the radio
DAB is a sh1te system with no benefits over FM, only drawbacks.
At least there were advantages with DVB, notable no ghosting, and most importantly Anamorphic Widescreen
The main advantage of the move to DAB from FM is in the saving in bandwidth, which is under a serious overuse threat. One single FM broadcast quality signal has a deviation (the measure of the amount of audio which has been superimposed on the carrier) of plus and minus 75 kHz meaning that it occupies 150 kHz. Non broadcast stations such as radiotelephones (not mobile phones) can use a deviation as little as plus and minus 2.5 kHz. So in that respect it's reasonable to close down the broadcast stations to regain spectrum space once a viable alternative is available.
Owing to the way that multiplexing works, in a bandwidth of 150khz, a set of about 10 stations could be transmitted using FDM (Frequency Domain Multiplexing) and probably a similar number of stations using Time Domain Multiplexing
The figures I've given, not "quoted" are from experience, generalised assumptions.The figures you are quoting are they for voice or Music - As music requires more "Data / Bandwidth" than voice due to the greater audio range
Personally I think they should now ban sales of FM only radios and only sell those with dab as well.
I know exactly what you mean, the "coastal plain" of S Wales is well covered by Wenvoe, St Hilary and Kilvey Hill main transmitters. Onwards towards deepest, darkest West Wales there's the Precili and Haverfordwest main transmitters, hardly blanket coverage. But as in the olden days of BBC and ITV television, the owners still say "you're not going to play on my transmitter" so you end up with the smaller repeater sites which are needed for the "deep" cover not carrying all the channels. For instance if I were 5 miles down the road I could receive all the BBC channels and almost all the commecial ones too but in my little valley, all I can get is the main BBC channels and nothing else.That's a bit of a selfish attitude as there are many people, like ourselves, who are not in the bracket of 'lucky' listeners who can receive the digital signal - and it looks as if we never will.
We needed a new radio for the home and a considerable amount of time was spent trying to find one. Eventually our local electrical dealer came up trumps.
Onwards towards deepest, darkest West Wales there's the Preseli main transmitters,
That's a bit of a selfish attitude as there are many people, like ourselves, who are not in the bracket of 'lucky' listeners who can receive the digital signal - and it looks as if we never will.
We needed a new radio for the home and a considerable amount of time was spent trying to find one. Eventually our local electrical dealer came up trumps.
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