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 Digital TV Malaysia v2, Malaysian Digital Terrestrial TV

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dayojah
post Dec 17 2019, 09:35 AM

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QUOTE(joshhd @ Dec 16 2019, 09:52 PM)
I'm like never see this tri-boom type of antenna before in around Malaysia... Because it's not commonly used? Or this tri-boom type is expensive to buy?

Is it really proven that this tri-boom type really improve reception a lot, compared to non tri-boom types like what we usually see in Lazada and Shopee?

And the reflector looks so damn big wehh.. Useful for aiming very far away transmitter?
*
Tri-booms work. A single boom of similar gain would be about 1.5m long.
joshhd
post Dec 17 2019, 10:02 AM

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QUOTE(dayojah @ Dec 17 2019, 09:35 AM)
Tri-booms work. A single boom of similar gain would be about 1.5m long.
*

I know it works... But why is it rarely used though?
Most of the time I see is one single boom ones, if it's a lot of elements.
nag
post Dec 17 2019, 11:31 AM

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QUOTE(joshhd @ Dec 16 2019, 09:52 PM)
I'm like never see this tri-boom type of antenna before in around Malaysia... Because it's not commonly used? Or this tri-boom type is expensive to buy?

Is it really proven that this tri-boom type really improve reception a lot, compared to non tri-boom types like what we usually see in Lazada and Shopee?

And the reflector looks so damn big wehh.. Useful for aiming very far away transmitter?
*
Quite popular in Indonesia.
dayojah
post Dec 17 2019, 05:00 PM

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QUOTE(joshhd @ Dec 17 2019, 10:02 AM)
I know it works... But why is it rarely used though?
Most of the time I see is one single boom ones, if it's a lot of elements.
*
Just down to what is available from the local importers.
They like us to waste money on tiny antennas with a booster. The booster does nothing useful if the cable is short
abhipraaya
post Dec 18 2019, 11:01 PM

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My 2015 LG TV has built in decoder. I just installed MYTV today. 5 elements antenna is mounted high on the rooftop. As per Google map, direct line distance to KL Tower is 11km. Full HD Channels are crystal clear and I'm able to receive Dolby Digital audio but it's only 2 channel s. I hope the stations will transmit in Dolby Digital 5.1 to unlock the full potential of the hardware. Occasionally though, there's a 1 second mute in audio. Not sure if anyone experience this? Subtitles for a movie I watched appears clipped. I've not used it enough to conclude how good it is but first impression is quite good. Probably there are still some technical glitches in the transmission for them to iron out I'm not sure..

user posted image
user posted image
trickyhunter
post Dec 19 2019, 11:47 AM

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QUOTE(joshhd @ Dec 6 2019, 09:08 PM)
These are the DTT frequencies after frequency restacking is being carried out for Mux 1 and Mux 2.
user posted image
Source (as of 6 Dec 2019): https://www.mytvbroadcasting.my/pdf/Lists-of-frequency.pdf
Original PDF for archive purposes: [attachmentid=10370434]

In conclusion, the total frequency range they'll use after frequency restack is between 546MHz to 682MHz.
682MHz (678-686MHz), just right enough to prevent interference from upcoming 700MHz 4G/5G band.

Although I do hope that they would use 470-610MHz frequency range for DTT instead...

So far MYTV only announce there'll be 5 transmitters to complete the frequency retune exercise by end of this year.
The rest are still haven't announce...
That could mean the one that they just uploaded to their website, is still subject to change then?  hmm.gif
Will see how...  biggrin.gif
*
Wrong hmm.gif Bukit Larut is use 665 for media prima 697 for RTM doh.gif
dayojah
post Dec 19 2019, 12:21 PM

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QUOTE(trickyhunter @ Dec 19 2019, 11:47 AM)
Wrong hmm.gif Bukit Larut is use 665 for media prima 697 for RTM doh.gif
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That is a clash with the so called 700 MHz LTE band being 698 MHz to 806 MHz
truelife
post Dec 19 2019, 04:18 PM

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QUOTE(abhipraaya @ Dec 18 2019, 11:01 PM)
My 2015 LG TV has built in decoder. I just installed MYTV today. 5 elements antenna is mounted high on the rooftop. As per Google map, direct line distance to KL Tower is 11km. Full HD Channels are crystal clear and I'm able to receive Dolby Digital audio but it's only 2 channel s. I hope the stations will transmit in Dolby Digital 5.1 to unlock the full potential of the hardware. Occasionally though, there's a 1 second mute in audio. Not sure if anyone experience this? Subtitles for a movie I watched appears clipped. I've not used it enough to conclude how good it is but first impression is quite good. Probably there  are still some technical glitches in the transmission for them to iron out I'm not sure..

user posted image
user posted image
*
The audio is in AAC stereo format, not Dolby Digital. With only 11km from the transmitter, coupled with high rooftop antenna, I actually expect you could receive stronger signal strength. Anyway, strong signal quality is much more important than signal strength, as seen in your image.
dayojah
post Dec 19 2019, 05:52 PM

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Not many places 11km from Menara KL actually have line of sight, too many tall buildings have gone up. The Bkt Sg Besi transmitter is at about the same height, but much clearer surroundings
abhipraaya
post Dec 19 2019, 06:07 PM

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QUOTE(truelife @ Dec 19 2019, 04:18 PM)
The audio is in AAC stereo format, not Dolby Digital. With only 11km from the transmitter, coupled with high rooftop antenna, I actually expect you could receive stronger signal strength. Anyway, strong signal quality is much more important than signal strength, as seen in your image.
*
In my DTV TV Audio setting I set my audio output as Auto. Among the other options available are HE-AAC, DD, DD Plus and MPEG. Sound bar connected to TV via optical cable. When I set as Auto, and tune to TV1, TV2, TV3 sound bar displays DD 2/0.0. Occasionally the audio cuts off for around a second or two. The sound bar displays PCM 2/0.0 when this happens. The video plays back smoothly though. Not sure if you all experience this intermittent audio disruption?

Signal strength is at 92% and 78% for the 2 respective frequencies. I believe this should be good enough. Picture is smooth, it's just the occasional audio disruption which is causing some annoyance..I did a search and found that this has also happened in UK, albeit old news : https://www.whathifi.com/news/update-bbc-ex...-audio-dropouts

This post has been edited by abhipraaya: Dec 20 2019, 11:38 AM
AV_2018
post Dec 20 2019, 01:44 PM

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QUOTE(abhipraaya @ Dec 19 2019, 06:07 PM)
In my DTV TV Audio setting I set my audio output as Auto. Among the other options available are HE-AAC, DD, DD Plus and MPEG. Sound bar connected to TV via optical cable. When I set as  Auto, and tune to TV1, TV2, TV3 sound bar displays DD 2/0.0. Occasionally the audio cuts off for around a second or two. The sound bar displays PCM 2/0.0 when this happens. The video plays back smoothly though. Not sure if you all experience this intermittent audio disruption?

Signal strength is at  92% and 78% for the 2 respective frequencies. I believe this should be good enough. Picture is smooth, it's just the occasional audio disruption which is causing some annoyance..I did a search and found that this has also happened in UK, albeit old news : https://www.whathifi.com/news/update-bbc-ex...-audio-dropouts
*
The audio is broadcasted in HE-AAC codec as mentioned previously in this topic. Some TVs such as Sony Android TV will encode and output in Dolby Digital on-the-fly for AAC sources that are at certain sampling frequencies.

Signal strength 50% and signal quality 90% is enough for me to get a stable reception with no interruptions when using indoor antenna setup.
birain
post Dec 20 2019, 03:04 PM

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QUOTE(dayojah @ Dec 19 2019, 05:52 PM)
Not many places 11km from Menara KL actually have line of sight, too many tall buildings have gone up. The Bkt Sg Besi transmitter is at about the same height, but much clearer surroundings
*
go download antenna pointer from googleplaystore. use that to aim your antenna to get the best signal. icon_idea.gif remember the red line is the line of sight for the signal. thumbsup.gif
birain
post Dec 20 2019, 03:06 PM

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btw, all RTM channel in HD is having gambar pecah when i tune in this morning, only all media prima, bernama and al-hijrah is ok.
dayojah
post Dec 20 2019, 04:20 PM

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Googleearth and Garmin Basecamp are good on PCs for finding best aiming direction
joshhd
post Dec 20 2019, 10:07 PM

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QUOTE(birain @ Dec 20 2019, 03:06 PM)
btw, all RTM channel in HD is having gambar pecah when i tune in this morning, only all media prima, bernama and al-hijrah is ok.
*

It's all about that video bitrate.

For all Mux 1 channels, you can see that they use the same constant bitrate for its SD and HD channels.
user posted image

A closer look on the 3 HD channels on Mux 1.
user posted image


Mux 2: The 5 RTM channels in HD quality.
user posted image


Mux 1 (TV3, Al Hijrah, Go Shop):
4.14Mbps per HD channel
2.09Mbps per SD channel

Mux 2 (All RTM channels):
3.6Mbps per HD channel

So, do you find that the video bitrate is "enough" based on what you see on myFreeview's HD channels?
Qash-M
post Dec 21 2019, 12:02 AM

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QUOTE(joshhd @ Dec 20 2019, 10:07 PM)
It's all about that video bitrate.

For all Mux 1 channels, you can see that they use the same constant bitrate for its SD and HD channels.
user posted image

A closer look on the 3 HD channels on Mux 1.
user posted image
Mux 2: The 5 RTM channels in HD quality.
user posted image
Mux 1 (TV3, Al Hijrah, Go Shop):
4.14Mbps per HD channel
2.09Mbps per SD channel

Mux 2 (All RTM channels):
3.6Mbps per HD channel

So, do you find that the video bitrate is "enough" based on what you see on myFreeview's HD channels?
*
plenty of improvements should be make.
joshhd
post Dec 21 2019, 01:41 AM

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QUOTE(Qash-M @ Dec 21 2019, 12:02 AM)
plenty of improvements should be make.
*

...comes with plenty of money to be paid by the broadcasters to MYTV Broadcasting.
dayojah
post Dec 21 2019, 08:49 PM

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Broadcasting in rural areas of Malaysia is a very expensive project, so don't expect to match Singapore bit rates.
adx
post Dec 21 2019, 09:00 PM

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Need advise. Looking at my TV spec (LG42LS5700), it does support DVB-T. Is this compatible with DVB-T2? or do I need both new antenna and DVB-T2 decoder to view myFreeview TV?

TIA sifus.
joshhd
post Dec 21 2019, 11:14 PM

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QUOTE(adx @ Dec 21 2019, 09:00 PM)
Need advise. Looking at my TV spec (LG42LS5700), it does support DVB-T. Is this compatible with DVB-T2? or do I need both new antenna and DVB-T2 decoder to view myFreeview TV?

TIA sifus.
*

Nope. DVB-T is not compatible with the newer DVB-T2 standards used in Malaysia as well as many other countries around the world.
You'll need to get a digital TV set-top-box to receive and watch myFreeview digital TV channels.

As for antenna, as long it's UHF type and your area is under digital TV coverage where the reception is strong enough for your existing UHF antenna, then it should be fine. Or else, you can go online shopping sites like Shopee or Lazada to get one.
For better reception possible, it's recommended that you choose outdoor UHF antenna, or an indoor UHF antenna with booster/signal amplifier type.

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