Just in time for the 2026 NAB Show, Broadcast Devices Inc. (BDI) has brought to market an SNMP-enabled control platform designed to simplify and safeguard RF switching in high-power dual-cabinet transmitter systems that use hybrid power combiners.
The PCC-300 3 Switch Combiner Controller is designed to provide centralized control, interlock management, and status monitoring for up to three motorized RF switches in a compact 1 RU chassis.
As BDI explains, “Modern FM and television transmitters frequently combine the output of two final amplifier cabinets to achieve higher power levels. In these systems, reliable and repeatable control of motorized RF switches or switchless combiners is critical when transitioning between combined operation and single-cabinet service modes.”
The PCC-300 is designed to address this requirement. And it supports four standard operating modes commonly required in combiner installations: Transmitters A + B to Air; Transmitter A to Air with Transmitter B to Test Load; Transmitter B to Air with Transmitter A to Test Load; and Transmitters A + B to Test Load.
Built-in interlock sequencing and dedicated “RF Safe” inputs are present.
For control and monitoring, the unit includes Ethernet with SNMPv2 agent support, a supplied SNMP MIB, and a Windows graphical user interface. It also provides GPIO and dry-contact interfaces for integration with legacy remote control systems and local panels.
