The OTR Antenna can be used with any of our Weboost Cellular Boosting 4G-X systems. The OTR antenna is more powerful than the mini-magnetic antenna that comes with the 4G-X kit so many customers like to add this to their set-up. This is designed to be used with the included brackets to attach to a trucker mirror, but RVers can get creative with mounting this unit, including attaching to a ladder rack or bat wing antenna. Also, those that tow Jeeps and want a good antenna for off-roading find this unit great because they can mount it to a roof rack. Many RVers use the TechnoRV Suction Cup Mount with this as well.