The MACOM C860 is a professional re-broadcast grade, rack-mounted, high isolation, passive headend signal combiner available in a 24-channel configuration. This unit combines the outputs from multiple modulators and processors into a single common broadband output. The high quality directional coupler design enables high isolation between input ports, providing minimum interaction between digital and/or analog input sources. Plug-in equalizers and attenuators provide system balancing capability and a high isolation sub-band output port for return path applications further enhance the versatility of this combiner.