A wireless repeater (also called wireless range extender) takes an existing signal from a wireless router or access point and rebroadcasts it to create a second network.
After you have configured your MikroTik router and you want to extend the wireless accessibility, here are few simple steps you need to follow to configure the other router as a repeater;
1.a) Let us say your wireless SSID of the first router is MainRouter.
On the Repeater go to wireless interface and scan to connect to the first router. If this is successful then on SSID you will see the name of the first router "MainRouter".
b) Configure the Wireless Distribution System.
While still in the Wireless Interface, Click on WDS and select Dynamic on WDS Mode. And WDS Default Bridge should be Bridge-Local, if you have configured your local IP Address on it.
2. a) Now add the Virtual Interface by clicking on the + sign and selecting VirtualAP. It should appear as Wlan2.
Click the Interface to configure Wireless SSID. Let us call the SSID: To_Clients. Master interface should be wlan1.
b)Then, Configure the WDS of Wlan2 as you have configured the previous one.
3. Go to Bridge and add ports ; wlan2 and wds2 if they did not appear by default.
4. If the main router had 192.168.88.1, then give the repeater another IP, say 192.168.88.2 it should work fine without IP but put it anyway to avoid confusions.
5. Go to wireless Security Profile and make sure that it has the same keys as the main router.
And there you go! Enjoy the Looong range of your wireless network.