That means unstable signal(30-50% signal strength considered quite weak already... too low to be useful ) ... for you distance you'll need an outdoor antenna... indoor antenna isn't optimal for your distance

I also get 90+ on the signal strength at some point but quality remain at 0. What is the correlation between both?

Usually, it's the antenna or wiring issue...

maybe what you can do is share us your area(or provide us with the distance from your location to the nearest transmitter), a picture of your antenna and make sure that there's no hobby-grade splicing - refer to the spoiler

the quality should be 100% and have a decent and stable signal to receive MYTV signal properly( at least 70% if not mistaken... the higher the better)joshHD might be able to confirm this



This post has been edited by yongtjunkit: Apr 15 2020, 06:39 PM

The antenna you're using now, does it has some sort of built-in signal booster? If yes, that could be the culprit.

When Strength reading is high, but Quality is 0%, I guess is because your digital TV tuner (either digital TV box or IDTV) is receiving too much signal (signal overload) until it saturates the signal to be interpreted by the receiver.
Or, your digital TV tuner is receiving strong interference from somewhere else (too much RF interference noise), till the point the received signal becomes "hard to interpret" or useless till it can't be read by the TV tuner.

Too technical? Ok, it layman terms, try other antenna please, or turn off the booster function. Reason is either the antenna is rubbish, or the antenna is not suitable to use in your location.

Btw, what is your area and state?

If you look at a TV signal with a spectrum analyser, it is actually made up of dozens of carriers spaced out across the 8 MHz channel.
Indoor signals usually end up with some of these strong and some week, so what should look like a neat row like this
https://upload.wikimedia.org/wikipedia/comm...ectrum_good.jpg
actually ends up looking like a picture of a mountain range. This is caused by reflections inside your house

So a good signal with almost no interference will look like a sharp cliff-like mountain, while signal with interference will look like entire graph very messy? Something like that?

But the thing is, what if consumers don't have equipment to check the spectrum analyser?
Strength high high, but Quality 0%?
And, if Quality reading is not 100%, maybe barely like 50-60%, but Strength also somewhere there, does it means there's some interference/data errors?

That's correct and why you have the quality bar and not just signal strength. If the strength is low, quality will never be good

So means if you have 70% signal strength for example but 0% quality means the signal is unusable/corrupted?

Depending a bit on the decoder, 70% signal strength is a bit low.
Better aerials are more directional and automatically give higher quality at the same time as signal

I'm 25km from seberang jaya tower
My ghetto antenna setup is shown below. Without the aluminum cans, my 650mhz channel all stutter. Now still stutter but less frequent. Previously made one stealth hawk antenna using dawai that can only get signal outdoor. . Unfortunately the wire that I have right now is not long enough so cannot permanently park this antenna outside to see the true performance.

Current setup



My 10mins diy antenna just for a proof of concept.




Thanks. I don't think saturation is the case here as I'm quite far away from the tower. Currently I'm using my antenna without booster as I have never once get any picture with it.

So let's say if I manual tuning to 666mhz, the strength and quality should only shown for this specific frequency only right? I observed the modulation portion jumping around 4qam, 16qam. When picture showing, it becomes 256qam.

Window grilles are the enemy of indoor reception

Yes MyTV use 256QAM, anything else is a confused decoder

throwback from 4 years back.

received the antenna,

managed to get signal now, not sure if i get all the signal or not.

but with all the cables hanging, wife will not approve when she sees this hahaha

thanks for the help LYN.


Attached thumbnail(s)

On your Samsung TV remote control, Press SETTINGS>Support>Self Diagnosis>Signal Information
There, you can check the signal readings.
Below is some example of how low would the signal readings look like, especially if you just blindly and randomly place the antenna yet you can still get video and audio without interruption.




On this Signal Information page, you reposition/readjust your antenna until you get the highest Strength % readings possible.

The higher the Strength % reading, it means your signal is more robust/stable and you could say that the signal won't easily get disrupted by any means.
If you get 100% Quality, that means your TV receives the signal completely without data errors. If the Quality reading is not 100% (maybe like 50-60%), that means your TV is actually "correcting" the data errors for you automatically in the background, so that you will still get video and audio without interruption/pixelation.

In layman terms, let say you turn on music on speakers.
Strength % is just like audio volume (loud or soft volume).
Quality % is how clear can you hear the audio played from the speaker. If 100% means you can hear the music from the speaker clearly.
If it's not 100%, means there's something disturbing you listen to music, e.g. your friends talking beside you while you listen to music, and you find it kinda disturbing but still acceptable (which makes the Quality reading 50-60%).
If it's even lower, like Quality 20-40% or way lower, that is like your friends shouting/yelling at you while you listen to music, making you unable to listen the music properly or even at all, regardless of how high or low is the audio volume (Strength reading).

That is how digital TV signal works. Correct me if I'm wrong,dayojah.

Keep that in mind that stronger signal does not mean the picture and audio quality becomes "sharper, clearer and more HD".
If you hear those technician/installer say higher signal means better picture, that's bulls**t. Don't believe that. That's fake news.

---

Right now, Malaysia uses 2 frequencies, so if you can get good signal on Mux 1 (e.g. 666MHz CH45), that means you'll get the same signal reading on all channels in that frequency.
For instance:



I didn't properly align my antenna la, so the Strength is not high, but as long there's no disruption in reception, then I'll leave it as it is.

So that means, if you get good signal on 650MHz, then move on to 666MHz to check for signal readings. No need to waste time go through every single channel to check reception like analogue TV broadcasts.

If you can receive NTV 7/ TV8(Mux 1) and also RTM channels(Mux 2), this means you have all the channel already

That's probably for Analog TV?

But higher signal strength = more stable signal( and less likely to be disrupted by rain?)

This post has been edited by yongtjunkit: Apr 17 2020, 01:44 PM

Once you get to 100 Signal, 100 Quality your picture is as good as MyTV will allow.

MyTV transmit two multiplexes, often one is weaker than the other, but the stations in each Mux are all or nothing, you cannot be able to receive only some of them.

Yes, more stable signal.
Signal would only drop a few percent when there's heavy rain, so most of the time it's not an issue to anyone to bother also, unless your signal strength/quality is very very weak. Same goes to satellite.
But then, it won't go till the point of no signal at all like satellite does, especially Ku band and Ka band.

Johor Bahru area and Bukit Bauk in Terrenganu will undergo frequency restacking exercise



When, you ask? It's Tomorrow (18 Apr) and day after tomorrow (19 Apr)!

At this kind of time, frequency restack? So freaking last minute??? They last minute get approval due to the third phase of MCO is it?
I wonder how come MYTV Broadcasting's didn't announce this on Facebook page at all. Not even on their website. Yet, another round of last minute chaos is coming soon.

Current Frequencies:
Mux 1: CH47 682MHz
Mux 2: CH49 698MHz

New Frequencies:
Mux 1: CH45 666MHz
Mux 2: CH43 650MHz

Johor Bahru is the only region in entire Malaysia that changes both Mux 1 and Mux 2 frequencies.
So, if by the time you're reading this, and you're already unable to receive all Malaysia DTT channels out of a sudden, just perform manual search on this 2 frequencies.

If you previously having difficulties receiving Malaysia DTT channels, try receive it with the new frequencies starting 19 or 20 April. Who knows, signal readings might improve.

This post has been edited by joshhd: Apr 17 2020, 10:40 PM

Surprised and very sick that MYTV Broadcasting do this during MCO period, without any warning giving prior then. MYTV doing what they want to do without giving any consideration to viewers and antenna installers (removing or moving channels without giving notice to viewers, no simulcasts during the switching period!!!) Not to mention by the time you post some areas may had already retuned to a new frequency!

And if not for this message I (and many others) won't even notice a retune event will happen soon and really there will be some chaos because the reception of Malaysian channels will gone all at once! This is not to mention that the electrical shops and antenna installers are not allowed to operate on this moment! Moreover, there would be risks and issue that for some TV viewers who do not retune (probably don't know how to do so), will be cut off from the latest information about the Coronavirus completely!

This post has been edited by shaun_kok: Apr 18 2020, 01:50 AM