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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
DVB-T Receivers, why so many channels?
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<blockquote data-quote="BG101" data-source="post: 26490" data-attributes="member: 176199"><p>I use around 15 on my TV sets and VCRs / DVD recorder, some of these are cable channels. Even if all the analogue channels were FTA (i.e. without the sync inversion) there would still be less than 100. Plus a lot of TVs and VCRs don't have VHF/hyperband tuners so are only capable of receiving a theoretical maximum of 49 (48) channels anyway! DTT may well reach more than 100 after analogue switch-off - this will free up a minimum of 5 frequencies for use with digital multiplexes, more if relays are not used. Due to better immunity to co-channel interference, more frequencies will probably be available in many areas - probably allowing another 15 MPXs bringing channel capacity to nearer 200. I doubt if this will ever be utilized though knowing the very slow takeoff of multichannel TV services when compared to other countries - namely the USA where many cities have between 16 and 30 ANALOGUE channels.</p><p></p><p>Regards</p><p></p><p>BG</p></blockquote><p></p>
[QUOTE="BG101, post: 26490, member: 176199"] I use around 15 on my TV sets and VCRs / DVD recorder, some of these are cable channels. Even if all the analogue channels were FTA (i.e. without the sync inversion) there would still be less than 100. Plus a lot of TVs and VCRs don't have VHF/hyperband tuners so are only capable of receiving a theoretical maximum of 49 (48) channels anyway! DTT may well reach more than 100 after analogue switch-off - this will free up a minimum of 5 frequencies for use with digital multiplexes, more if relays are not used. Due to better immunity to co-channel interference, more frequencies will probably be available in many areas - probably allowing another 15 MPXs bringing channel capacity to nearer 200. I doubt if this will ever be utilized though knowing the very slow takeoff of multichannel TV services when compared to other countries - namely the USA where many cities have between 16 and 30 ANALOGUE channels. Regards BG [/QUOTE]
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Terrestrial Broadcasting
Terrestrial Television, Digital and Analogue
DVB-T Receivers, why so many channels?
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