Broadcast Devices Inc. is offering the PCC-300 3 Switch Combiner Controller, which it describes as an SNMP-enabled control platform intended to simplify and safeguard RF switching in high-power dual-cabinet transmitter systems that use hybrid power combiners.
“Modern FM and television transmitters frequently combine the output of two final amplifier cabinets to achieve higher power levels,” it notes.
“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.”
BDI said the PCC-300 addresses this by providing centralized control, interlock management and status monitoring for up to three motorized RF switches in a 1 RU chassis.
An optional redundant power configuration is available for mission-critical sites requiring increased system availability.
“The PCC-300 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,” BDI said.
“Built-in interlock sequencing and dedicated ‘RF Safe’ inputs ensure switch movement occurs only under safe operating conditions, helping protect RF switches and transmission equipment during maintenance or fault conditions.”
It works with motorized RF transfer switches from major manufacturers and offers optional factory-fabricated control cables to simplify installation.
For control and monitoring, the unit includes Ethernet with SNMPv2 agent support, a supplied SNMP MIB and a free Windows graphical user interface. It provides GPIO and dry-contact interfaces for integration with legacy remote control systems and local panels.
It is available from BDI dealers.
NAB Show Booth: C2816 (Broadcasters General Store)
