Can I connect an external antenna to my Wi-Fi router?

Episode 1460 (37:35)

David from British Columbia
Archer T2UH

David's office uses a shipping container as an office and they have to use an external antenna to pick up the wireless signal, but it only connects to one computer. Can the external antenna be connected to a router? Leo says yes, it can, but the Wi-Fi standard is unique and router connectors vary. He'll need to go somewhere that can bundle the router with an attachable antenna to get the right match.

Leo recommends going to AntennaWeb.org, but the chatroom says that WirelessHack.org is a good source too.