Hello,
i think i shall describe the situation first
1 - I have a ADSL in my Home
2 - My office is 300m away from my home
3 - i wanna BRIDGE the ADSL internet from my HOME to MY OFFICE
4 - I have 2 x routerboard SXT Lite5 for the Wireless Bridge + 1 x Linksys X3500 as ADSL Modem
5 - I had a sitecome modem before X3500
So when i was using sitecom everything was working fine
but sitecom broke and i had to change it with a X3500
after that i can not use this bridge anymore!
the Mikrotik Antennas can not see/ping modem and modem cant see them too!
what shall i do? 
everything on X3500 is normal i shall say that this Problem is with D-Link modems (since i have checked) too
DHCP settings on X3500 are as follow:
Router IP: 192.168.2.1
First DHCP IP: 192.168.2.2
End IP: 192.168.2.254
On the Server/AP SXT i have this configuration:
Static IP: 192.168.2.250
GW: 192.168.2.1
DNS: 192.168.2.1
What in hell shall i do? (