A L-band combiner is an electronic device that combines multiple signals in the L-band frequency range. It is also known as a wideband frequency combiner. A L-band combiner is important for a broadcast station because it is the piece of equipment that allows multiple transmitters to be connected to a common antenna for broadcasting. Without a L-band combiner, the transmitters would not be able to be connected together, and the broadcast station would not be able to operate. Therefore, a L-band combiner is necessary for a broadcast station.