LBA Technology has designed, built and delivered to Taiwan an advanced technology AM Triplexer system for Broadcasting Corporation of China (BCC). This is the second successful multiplexer project undertaken by the North Carolina company for the BCC.
The project is especially notable because the tower site posed an engineering challenge. The AM triplexer had to be incorporated into an electrically short tower in the middle of a lake, with the tower base and triplexing equipment fitted snugly on a small platform area 30 feet above the water.
As its name implies, an AM triplexer allows the simultaneous use of three medium wave AM transmitters on a single antenna. AM triplexers combine an antenna tuning unit and a rejection filter section for each frequency, which effectively sort out and pass through desired frequencies and reject undesired frequencies. The AM triplexer system for BCC was designed for 531kHz, 648kHz and 963kHz, and 10,000 watts power at 125 percent modulation for each frequency.
The AM triplexer system was delivered through Broadcast Electronics in Quincy , Ill., an international transmitter manufacturer.
LBA Technology routinely custom-engineers multiplexers so broadcasters can feed multiple transmitters to common antenna systems. It is a cost-effective way to minimize the physical plant requirements of AM broadcast stations.
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