Connect main and auxiliary LTE antenna inputs through a single roof-mounted housing with Teltonika PR1KCL25. This combo MIMO mobile antenna covers 698–960 MHz and 1,710–2,690 MHz, with linear polarisation and separate main and auxiliary antenna connections. Main antenna gain is 2.5 dBi; auxiliary antenna gain is 2.0 dBi. Both connections use SMA male terminations, giving installers a defined connector interface for compatible cellular routers. The specified impedance is 50 Ω, and VSWR is below 3.0. These electrical characteristics define the antenna’s operating range and connection requirements without tying it to a particular LTE throughput rating. Two RG174 cables, each 3,000 mm long, run from the antenna housing to the router. Their separate terminations connect the main and auxiliary antenna paths while keeping both antenna elements within one external assembly. This arrangement suits vehicle installations where the antenna sits on the roof and the cellular router sits inside the vehicle. Cable length, connector gender and supported frequency bands provide concrete checks when planning the route between the roof mounting position and the router’s antenna ports. Screw mounting provides mechanical attachment at the installation surface. The circular housing measures 81.3 mm in diameter and 15.2 mm high, providing a low-profile roof installation. Its UV-resistant plastic radome carries an IP65 ingress protection rating, excluding the cable outlet; that exclusion matters when positioning and protecting the cable exit. Operating temperature spans -40 to +85 °C, and antenna weight is 157 ± 10 g. RoHS compliance and UV resistance are specified. Together, the dual LTE connections, fixed cable lengths and compact screw-mounted housing define this antenna’s configuration for mobile cellular installations.