The techniques of this disclosure relate to a system for transmitting radio frequency signals. The system includes a controller in communication with a first device fixed within a first housing attached to an exterior of a vehicle. The system also includes a second device fixed within a second housing attached to the exterior of the vehicle. The controller determines whether the first housing and the second housing are in a first position or in a second position. When the first housing and the second housing are in the first position, the controller transmits first radio frequency signals via the first device and via the second device. When the first housing and the second housing are in the second position, the controller transmits second radio frequency signals via the first device and via the second device. The system improves an antenna coverage area of the first device and second device.