Information for other annoyed that have no Fritz box, but other routers:
1. It does one then nothing, "fritz.repeater" or tap the specified descriptions in IP in the browser, but you must in the configuration pages of the router take active there assigned IP address and enter it in the browser, for example, 192.168 .0.101 - only you have access to the repeater, the browser menu.
But then 2. You can find the laptop the repeater with its usual name is no longer in the list of all WLANs. The declaration must be laboriously searching for [...]
"After the connection is set up for wireless base station, WLAN Repeater uses the FRITZ! By default, both the name (SSID) and the wireless network key of the WLAN base station. This wireless device can automatically to the device with the respectively higher transmitting power connect (roaming).
...
Since most wireless devices have different wireless networks with identical names (SSIDs) View not separately, can after initial setup of the FRITZ! WLAN Repeater to create the impression that its wireless network is not available. This is not is a mistake. "
Good technique - lots of fun!