Can anyone tell what is means wireless repeater?  ware can i used? i need more explainations.

Thank You!

Hi nichky,

Have you read this?
https://en.wikipedia.org/wiki/Wireless_repeater

If so; what is your specific question?

Best regards, Lui

I,m going to make a practice,i've got RB433AH with 2 radios, it's enough,right? and let you know 

Thanks

i've got RB433AH with 2 radios, it's enough,right?

You can even use the wireless repeater function if you have only one physical interface.
http://wiki.mikrotik.com/wiki/Manual:In ... s#Repeater

Best regards, Lui

It's not smart to use repeater functionality when you have two independent radios. Use one of them as client bridge and second as Ap bridge and bridge them together. Different frequencies of course...