Hello, I live outside the metropolis and my 4G reception is weak. I am interested in buying an outdoor antenna and I will install it on the wall opposite the nearest supplier's antenna.
I wonder which hardware to buy to get the best result without additional noise or heating the device:
 5 m of cable antenna,
 18dbi or 28dbi (worried its input noise or need too much wattage)
2 SMA connectors for the antenna
I read what an expert wrote but I didn't get the technical answer.

Thanks

https://community.tp-link.com/en/home/forum/topic/249174?replyId=553832