Speaking of which, I don't get any of those MBHD Test channels (second mux) in Sarawak here.

Rescan all DVB-T2 frequency, only one mux exists.

There used to be 3 muxes. Donno why they turned it off

There used to be 3 muxes. Donno why they turned it off

Wonder if the bitrates on the test channels is any better than current one?

Interference could happen if those transmitters using SFN is not planned well. It could significantly shrink the reception range of the transmitter due to co channel interference. Even with a well planned SFN network, some high power/gap filler transmitters may be needed to added into the network to improve overall reception to avoid some areas losing reception completely.

Those connecting their analogue TV to Starhub's cable point infrastructure are seeing just blank screens (dead air) transmitted by Starhub themselves (all but 2 channels on the system doesn't switch to blank screen, which was the 743.25Mhz Starhub Testcard and also the sport channel which has ended transmission on 28 December 2018, showing information screen regarding closure.) Starhub also plan to discontinue their digital cable TV services on 30 June 2019 as they move their customers off IPTV platforms and to retire their cable network.
Maybe, but back then when Channel U (analogue) was interfered by TV1 Gunung Ledang back on 2010, causing large scale interference to Channel U to many parts in Johor (including areas as far as Pontian and Pekan Nanas), causing viewer complaints to Channel U's Facebook page at that time. Channel U responded as they are a Singapore channel, they will not care about reception issues in Malaysia as it is out of their control. So any reception of Singaporean channels will be an bonus for Johor viewers. However, there were reports at the past describing man installing TV antennas in Muar as Singapore TV channels are quite popular there and some Johor Bahru based businesses (particularly theme parks like Legoland) do advertise on Mediacorp TV channels. Vasantham even organise events on Johor Bahru.

They may continue using 16 QAM modulation for an considerable future, unless they are going to start 4K/UHD transmission in the future. Even if UHD reception is available in the future, it will be niche for considerable time as it was hard to even switch over. This is the same for HD5 channel via DVB-T. Many who doesn't subscribe to pay TV remained using analouge TV, as the analogue channels can be received without any ghosting and snows via the cable point and DVB-T only carried 3 simulcast channels (Ch5 and HD5, Ch8, CNA). This resulted very few viewers are receiving the channels in DVB-T as there were no promotion on digital TV at that time.

Before the activation of these masts, the DTT transmission were only available from the Gunung Pulai mast only. Although I live in a location when the TV mast could be clearly seen, constant freezing of TV signal was frequently encountered. It wasn't until they activated those 2 masts who partly solve my problems, as those 2 are intended for indoor reception and is strategicly placed so that viewers live in these areas using outdoor antenna (whenever pointed to Gunung Pulai/Bukit Batok SG) could still receive better signal for Malaysia TV. There will be additional interference caused by Indosiar from Batam, as those transmitters has activated Channel 49/698MHz (MYTV MUX 2). Some in JB still can't receive local DTT via antenna (a big issue that must be resolved fast or it would cause negative perception to MYTV when analogue TV switches off), and the problem was caused by co channel issue caused by SCTV, as someone from Batam received stable signals from Malaysia DTT if SCTV happened to have problem on the transmitter.

They may continue using 16 QAM modulation for an considerable future,

Bitrates stands at around 1200kbps for HDTV or 550kbps for SDTV based on 5 min record. (This is consider that the transmissions consists only a static test card and information regarding test transmissions, should be similar to bitrates used for MUX 1 when the services are up.) Also interesting to note that the contents transmitted for test transmissions are different.

Thank you very much for all the explanation you've given in the past few days. I really really appreciate those information very much.

I wanna ask, do you know what is the FEC code rate used in Singapore DTT? Are all 4 mux having the same FEC code rate?
How about Malaysia's? What's the FEC used for Malaysia DTT?

Compare between 16QAM and 256QAM, besides able to transmit more bandwidth, how big is the difference in terms of signal reception?
Does it mean, let say now I'm a Singaporean, live in HDB, using indoor antenna to watch Singapore DTT channels and have 90% signal, thanks to 16QAM.
If one day, Singapore DTT uses 64QAM or 256QAM, how much does it affect the signal reading? Will I see a big drop of signal % reading? Or the reading did not drop, but the chance of not able to get 0 reading of BER is higher, or what? Could I even, completely lose signal as Singapore DTT transmits in 64 or 256QAM?

Another question... Is Indonesia DTT channels possible to receive in Johor or Singapore now? How's the reception? What are the frequencies, QAM and the FEC used? You have the channel list?

Singapore DTT channels transmits from the frequency range within 538MHz to 586MHz with empty gaps in between. If Singapore's IMDA would have islandwide frequency retune exercise, like after 3 countries has decided which frequencies to be allocated for DTT after ASO and 700MHz refarm for mobile, could they consider this:

i) Increase from 16QAM to 64QAM (or 256QAM?), to squeeze in more HD channels per multiplex to reduce the number of multiplexes to be used, and possibly in the future (many many years from now), they could offer new UHD channels since they have more bandwidth as QAM increases?
ii) Instead of using 5xxMHz range frequencies, Singapore to use the lowest range in UHF frequency possible (474MHz, 482MHz, 490MHz, 498MHz) for DTT, to compensate the QAM increase which may affect easy signal reception and improving indoor reception, in contrasts with the current 5xxMHz range, it can somehow have better wall penetration for indoor reception. Therefore, the rest of total 25 x 8MHz channels which is from 506MHz-594MHz and 602MHz-698MHz range to be allocated for Malaysia and Indonesia DTT.

What do you think? Do you think this is somewhat practical? Why I think that way is because,

Singapore FTA channels: Programming are generally better in quality, so in my opinion, for them to make sure their channels have easy signal reception is a wise thing to do. And that could also mean, easier for Johor people to receive their channels easier too, which is a bonus for Johorians and a bonus for Mediacorp as their channel viewership ratings are "naturally" being contributed from country outside Singapore.

Malaysia FTA channels: Just ugh, still has lots of room for improvement. Currently already using 6xxMHz frequency, so hmmm, no comment la.

Indonesia FTA channels: Since reception are generally meant for Batam, the population there isn't very very dense and high rise buildings there are not as much as Johor Bahru and Singapore... So, for them to use slightly higher UHF frequencies (>506MHz or >602MHz ones) shall not be a huge problem for them, isn't it? After all, many of their analogue FTA channels are now on 7xxMHz range, so yeaahh....

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If Singapore to have frequency retune exercise, how would they manage and reconfigure with the building's MATV system, or indoor signal repeater or something? Do they only repeat their 4 multiplexes of Singapore DTT, or they need not to do anything as its building signal repeater actually repeats all channels from 3 countries together (from 470-698MHz)?

Sarawak and sabah frequencies are real joke.
Hilly terrain all over and MYTV uses 600Mhz and above 
Current analog frequency is around 200 - 300 Mhz something.

Sarawak and sabah frequencies are real joke.
Hilly terrain all over and MYTV uses 600Mhz and above 
Current analog frequency is around 200 - 300 Mhz something.

I gave up with MYTV as signal reception here in Sibu Sarawak is too weak and unsteady. I use satellite and TVbox(but government is going to ban it 🙄)

Malaysia's is 256QAM GI 19/256 COFDM (FFT) 32k FEC 2/3.

Mediacorp can choose to use lesser multiplexes with higher QAM (reduction from 4 multiplexes to 2 multiplexes with more channels per multiplex while maintaining same quality) however the required transmitter power will be much higher.

If Singapore needed to do frequency retune exercise in the future, they may not allocate those multiplexes that close (538mhz,546mhz,554mhz .etc) as it may cause adjencent channel interference.

527.25MHz (523.25-531.25MHz) - Channel U Analogue (ceased)
538.00MHz (534.00-542.00MHz) - Channel 5 (HD), Suria (HD)
543.25MHz (539.25-547.25MHz) - okto Analogue (ceased)
546.00MHz (542.00-550.00MHz) - EMPTY for Southern Johor, but it is myFreeview frequency for Northern Johor
554.00MHz (550.00-558.00MHz) - Channel 8 (HD), Vasantham (HD)
559.25MHz (555.25-563.25MHz) - Channel NewsAsia Analogue (ceased)
570.00MHz (566.00-574.00MHz) - Channel NewsAsia (HD), Channel U (SD), okto (HD)
578.00MHz (574.00-582.00MHz) - EMPTY for Digital?
586.00MHz (582.00-590.00MHz) - Channel U (HD)

631.25MHz 41 - MNC TV
639.25MHz 42 - NTV7
647.25MHz 43 - RCTI
655.25MHz 44 - TV9
663.25MHz 45 - Trans TV
671.25MHz 46 - 8TV

Also all wireless frequency plans has to be discussed and done between 3 countries, so that each country will get its own exclusive frequency (like those used for DTT,DAB,FM) and to avoid interference (Mobile phone services, Public services like Police, Fire and DTT,DAB,FM).

I gave up with MYTV as signal reception here in Sibu Sarawak is too weak and unsteady. I use satellite and TVbox(but government is going to ban it 🙄)

You aim at which satellite to watch what channels?
And btw, Malaysia FTA channels is sucks. It is considered normal for a Malaysian to not watch those channels.