Access Point Signal Strength SO WEAK!

[Aldrin-John-Olaer-Manalansan]

Hello, the idea of this project is great. The offer it tells its reader is what I have been searching for. I want to apply the feature that when the raspberry pi has no wifi network connected, it will create a wifi access point which users can configure the right wifi ssid and password.

I do not want to install the OS Version of this repository since I am attached to the genuine Raspbian OS, so I decided to SCRIPT-BASED install the RaspiWiFi. Unfortunately, after the installation and the raspberry pi reboots, I cannot see the access for when far 3 meters from the raspberry pi.

What I have observed is that I can only see the access point when I am VERY NEAR the raspberry-pi(exactly 1 meter, point-to-point).

Can I increase the WiFi AP Range? If yes, How? Thanks.