QUOTE(yongtjunkit @ Dec 28 2019, 08:54 AM)
🤔, Do I look at pre BER or post BER... currently it seems like I got like BER rating of 1 as in the screenshot above but the image is useable
Oh, I wasn't aware the BER reading on your previous photos, and plus you edited the post by adding more photos (Lowyat forum didn't notify me

) Then I have some corrections to made...
QUOTE(yongtjunkit @ Dec 27 2019, 12:22 PM)
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TV 1 signal :
Mux 1

Mux 2

TV 2 ( TV 1 decoder OFF )
Mux 1

Mux 2

TV 1 ( both decoder ON)
Mux 1

Mux 2

And the hobby grade splicing by the landlord

Edit: after factory reset the botato DVB T2 box, auto scan at first can’t receive the RTM channels and have the Mux 1 channel with poor quality( image breaking up )
Considering to buy an indoor antenna, any indoor antenna to recommend? According to google maps, it’s 18KM from the nearest transmitter ( gunung kledang)
And wah, that "hobby grade splicing"

Confirm reduce signal... Use a cable splitter, like this...
https://shopee.com.my/2way-splitter-for-rg6...5202.2851272280Pre BER means the readings of any data errors receive by your MYTV, before it is being corrected.
Post BER means the result after the receiver (MYTV box) corrected the data signal errors received earlier.
Anyhow, both pre and post BER should be 0.00
BER of 1 and 2 may be acceptable and may able to watch as usual, but susceptible to viewing disruption at anytime since the signal is not stable.
Because BER means "bit error rate", that means the "data" has errors for some reasons (e.g. cable attenuation, interference, weak signal). So that's why the BER should be 0.00, or else you will experience intermittent disruption in reception.
I think you can get started, firstly by removing that tape on the cables used by your landlord's "hobby grade splicing" and re-terminate the cable with F connectors, then connect to the cable splitter. I don't think your landlord would mind that la.... Even if your landlord is not friendly type, I don't think he/she would mind also, since using proper cable splitter will be better than that "hobby splicing" method.
And once you did that, and the signal improves and BER is 0.00, both TVs also no signal issue, then no need to get new antenna and cable...
In that case, signal quality and BER matters more than signal strength. Simply means, just because you have strong signal, doesn't mean you have good signal.