The CSL400 Series Control Station Combiner provides a compact, integrated solution for connecting multiple 700/800 MHz control station radios to a shared antenna system. Designed for critical-infrastructure and dispatch environments, the system helps reduce antenna count, tower loading, visual clutter, and RF cabling complexity while supporting up to 32 radio channels. The CSL400 Series functions as both a transmitter combiner and receive multicoupler. In LNA-active operation, the integrated receive LNA helps preserve receive-path performance through the shared antenna system. If operating power is lost or the LNA is removed, the receive path automatically reverts to a passive LNA bypass path to support receive-path availability.

The system supports 110–240 VAC operation with a 12 VDC nominal backup input and automatic AC/DC power-source switching. Front-panel LED indicators provide quick visual status for power, fan, LNA, and over-temperature conditions, while the external alarm relay supports remote health monitoring. The CSL400 Series is well suited for dispatch centers, control-room backup systems using mobile radios, and compact equipment-room installations where reliable shared-antenna infrastructure is required.