MikroTik's RB-GPS is a standalone active GPS antenna, specifically made for the 1575.4 MHz frequency used by GPS. The size of the antenna is 46.5 mm x 26.5 mm x 12.5 mm and is waterproof with IP67 rating. It has a long 5m cable with an SMA connector. It provides accurate geographical coordinates of your router, even when it is mounted indoors. The long cable allows you to bring the antenna outside and mount it with the included magnet, or double-sided tape.