What is a Wifi Repeater

• A wifi repeater combines
  an access point, wifi client, and router.

Raspberry Pi Wifi Repeater

• The Pi 3 needs a USB wifi dongle.
• The Pi 2 needs 2 USB wifi dongles.
• The Pi 0 W needs a USB-OTG cable
  and Broadcom wifi dongle.
• The Pi 0 needs a 2-way USB bus, 2 wifi dongles.