AsiaSat4 at 122.2E is a strong satellite with good signal coverage in China. In many cases we find that a number 25 signal reception is already ok for stable signal reception. Of course the stronger the signal, the better for the long term stable use.
Stronger signal makes it not likely suffers from rain fade when it’s raining. Over the last two years, we find that it has to be over 40% to survive Shanghai’s whole year weather.
In this case we managed to get over 90 from the dish with a short testing cable. After the cable is connected to the receiver in the apartment through connectors, the signal drops down to 60 but it’s still good enough.
In terms of finding your own box’s signal quality, checkhere.