how to activate wifi driver detected with installer but not after installation

[Linux for blind general discussion]

Hi,

I successfully intalled this distro:

https://nashcentral.duckdns.org:8100/projects/AutoTalkingArch-2018.03.25-x86_64.iso

installer successfully detected my wifi, but after installation, I can't 
connect to the internet, wifi networks aren't visible. I have some 
Broadcom, my ntb model is Lenovo ThinkPad X131e Intel core i3 configuration.

Thanks,

Pavel