You can make a Wi-Fi extender by using a USB Wireless LAN adapter "dongle", a USB passive extension cable and a mesh-covered dish. Start by attaching the WiFi dongle and the USB cable in the dish using twist-ties or hot melt glue. Plug in your antenna and first insert the male end of the USB cable into your PC and set that as your WiFi card by using your network settings. Aim your dish and find the remote WiFi transmitter want. Once you are connected, fine tune your dish by adjusting the location of the dongle.