Hi there,
is possible with RB411UAHR to use an external antenna to get a better signal for 3G?
Apparently only antenna connector for Wi-Fi.
There are no 3G connectors on this board. You need to use a miniPCI-e 3G modem with this routerboard that has antenna connectors.
Thanks for wall your answers. What about the miniPCI you posted? Is that an external connection to a 3G antenna? Is that a Mikrotik board?
minipci-e 3G modems have ufl antenna connectors, and you can use a pigtail to connect any antenna. You will find supported 3G modems on mikrotik wiki, but mikrotik does not produce 3G modems.
without the miniPCI modem you have no 3G on this board. Modem is required to have 3G. Antenna connectors are on the modem itself.
Can you suggest me a compatible modem with an external antenna with the highest gain?
antennas are always sold separately. here is a list of tested modems:
http://wiki.mikrotik.com/wiki/Supported_Hardware#3G_cards