Diplex filters are three port devices with a common port, a lowband port and a highband port. They are used to combine or isolate two different bands of. frequencies. Models are available in a wide variety of crossover frequencies. Eagle's diplex filters are the sharpest available on the market.

What is a the purpose of a Diplex filter?

The diplex filter, or diplexer, is a matched set of low-pass and high-pass filters, which separate signals by direction (possible due to their difference in frequency). ... The upstream paths from all subscribers may be combined to send all upstream signals through the same path.

Why diplexer is needed?

A diplexer allows two different devices to share a common communications channel. Typically, the channel is a long coaxial cable, and a diplexer is often used at both ends of the coaxial cable. The plan is feasible if the two devices operate on different frequencies.