Broadband-Hamnet™ Forum::Hardware::Ubiquiti Rocket M2 Chain We have a Bullet M2 into a 24dBi dish going to an AirGrid M2 on a Got my new antenna today Ubiquiti AirGrid 17x24" 20dBi. Loaded the Firmware and we are up and running. Now to get that antenna on the roof and connect to. Broadband-Hamnet™ (formerly called HSMM-Mesh™) is a high speed, Ubiquiti firmware for the listed devices is available from the Software differing RF signals not compatible with other hardware. M2 M5 M9. AirGrid. √.