Mar 13 2012, 06:17 PM
QUOTE(jamesleetech @ Mar 13 2012, 05:02 PM)
Mmm, smileguy... good question... will ABN go nationwide later ? Not only do I have doubts, I am very pessimistic that ABN will go nationwide in the future so I do hope it does not close before that !
Ya loh, waited and waited for MegaTV to go nationwide, then dissapointment. Then U TV, dissapointment again when they migrated to U Mobile ! I can't be blamed for being so pessimistic!
I believe MegaTV used terrestrial over-the-air transmission using special aerial for reception. I think the transmission was in digital. Don't think its in HD at that time, as HD TV commercial channels were only launched in other countries only recently sometime on or after 2007. MegaTV was not nationwide so I was one of the millions that were shut out.
I am not a telecommunications engineer. I suspect that there maybe many limitations for terrestrial over-the-air transmission of HD channels because of more and more data which needs to be fed to a transmission line such as broadband internet with faster and faster Mbit speed required, 1080i/720p resolution video, 5.1 surround sound, 3D active shutter interlaced videos, blah, blah, blah. I shall simply call it as "huge bandwidth" which terrestrial over-the-air HD transmission may not be able to carry. This is where Fibre Optic Cable can do the job by providing the "huge bandwidth" needed and also allowing for broadband internet which requires 2-way synchronous traffic. Over-the-air transmission is one way to our TV so FULL internet access is not possible.
I remember the time in the early 1990 when ATUR 450 MHz mobile phones (Dai Kor Dai, in cantonese) were used. At that time, single RBS (Radio Base Station) tower can cover a much wider circular area but when changed to ART 900 and higher frequencies, the coverage area of each RBS have significantly been reduced. This is why we see so many of such "mini towers" in different parts of town. Ok... For HD channels, I do suspect that there may be problems building even more towers at closer distances due to shorter coverage area and more powerful transmitters required to carry the "high bandwidth" of HD channels. Please correct me if I am be wrong.
In my unqualified opinion, because of such "bandwidth" limitations and technical problems of such over-the-air HD transmission, such companies would NOT choose to build such infrastructure that are not future proof, that require too much upgrade costs. Look at what happened for older shared satellite dish installed in older condos/apartments with in-wall cabling. When a building is under construction, its easier to install in-wall cabling to support both the normal Astro and the latest Byond HD. But not so easy to upgrade or have problems after the building construction have completed.
We have seen a few failures before when a few TV networks closed before they can go nationwide. Two exceptions are TV3 and NTV7 which are now nationwide but when will they go HD with 5.1 audio plus other goodies ? RTM already tested telecast in HD for the opening and closing ceremony of the Beijing Summer Olympics 2008. My opinion...maybe wait for Wawasan 2030 or 2040 ? Or wait for 2013 to see what happens because the Malaysian Government have set that date for all analogue transmission to be changed to digital, SD and HD. This will release and free the frequency spectrum for use by 4G mobile networks. TV channels have already migrated to digital transmission only (SD and HD) in such countries as Britain, US and Hong Kong since 2008.
Ya loh, what I have mentioned above are only my "kopitiam" talk at "Coffee Bean" shop so some info may not be accurate or based on wrong facts. Just my opinion for discussion, hehe.
Probably last minute between 2013-2016. Ya loh, waited and waited for MegaTV to go nationwide, then dissapointment. Then U TV, dissapointment again when they migrated to U Mobile ! I can't be blamed for being so pessimistic!
I believe MegaTV used terrestrial over-the-air transmission using special aerial for reception. I think the transmission was in digital. Don't think its in HD at that time, as HD TV commercial channels were only launched in other countries only recently sometime on or after 2007. MegaTV was not nationwide so I was one of the millions that were shut out.
I am not a telecommunications engineer. I suspect that there maybe many limitations for terrestrial over-the-air transmission of HD channels because of more and more data which needs to be fed to a transmission line such as broadband internet with faster and faster Mbit speed required, 1080i/720p resolution video, 5.1 surround sound, 3D active shutter interlaced videos, blah, blah, blah. I shall simply call it as "huge bandwidth" which terrestrial over-the-air HD transmission may not be able to carry. This is where Fibre Optic Cable can do the job by providing the "huge bandwidth" needed and also allowing for broadband internet which requires 2-way synchronous traffic. Over-the-air transmission is one way to our TV so FULL internet access is not possible.
I remember the time in the early 1990 when ATUR 450 MHz mobile phones (Dai Kor Dai, in cantonese) were used. At that time, single RBS (Radio Base Station) tower can cover a much wider circular area but when changed to ART 900 and higher frequencies, the coverage area of each RBS have significantly been reduced. This is why we see so many of such "mini towers" in different parts of town. Ok... For HD channels, I do suspect that there may be problems building even more towers at closer distances due to shorter coverage area and more powerful transmitters required to carry the "high bandwidth" of HD channels. Please correct me if I am be wrong.
In my unqualified opinion, because of such "bandwidth" limitations and technical problems of such over-the-air HD transmission, such companies would NOT choose to build such infrastructure that are not future proof, that require too much upgrade costs. Look at what happened for older shared satellite dish installed in older condos/apartments with in-wall cabling. When a building is under construction, its easier to install in-wall cabling to support both the normal Astro and the latest Byond HD. But not so easy to upgrade or have problems after the building construction have completed.
We have seen a few failures before when a few TV networks closed before they can go nationwide. Two exceptions are TV3 and NTV7 which are now nationwide but when will they go HD with 5.1 audio plus other goodies ? RTM already tested telecast in HD for the opening and closing ceremony of the Beijing Summer Olympics 2008. My opinion...maybe wait for Wawasan 2030 or 2040 ? Or wait for 2013 to see what happens because the Malaysian Government have set that date for all analogue transmission to be changed to digital, SD and HD. This will release and free the frequency spectrum for use by 4G mobile networks. TV channels have already migrated to digital transmission only (SD and HD) in such countries as Britain, US and Hong Kong since 2008.
Ya loh, what I have mentioned above are only my "kopitiam" talk at "Coffee Bean" shop so some info may not be accurate or based on wrong facts. Just my opinion for discussion, hehe.
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