Kathrein EXR 124 Passive SAT IF Switching Matrix 8 Inputs 4 Outputs 20510054

In multi-dwelling units where multiple receivers need access to satellite and terrestrial signals, the Kathrein EXR 124 passive switching matrix provides a reliable distribution solution. It combines 8 SAT IF inputs from two satellite positions with a terrestrial input and distributes them to 4 subscriber outputs, enabling each connected receiver to independently select the desired transponder.

Key specifications

• Operation mode: passive
• SAT IF inputs: 8 (2 satellite positions, 4 polarizations each)
• Terrestrial input: 1
• Subscriber outputs: 4
• SAT IF frequency range: 950–2150 MHz
• Terrestrial frequency range: 5–862 MHz
• SAT IF through loss: approx. 4 dB
• Terrestrial through loss: approx. 18 dB
• SAT-SAT isolation: > 30 dB
• SAT-terrestrial isolation: > 30 dB
• Connectors: F-type
• Switching signals: 13/18V, 0/22kHz, DiSEqC 2.0
• Cascadable: yes
• Housing material: die-cast zinc
• Mounting: wall mountable

Why choose it

The EXR 124 is a passive device, meaning it requires no external power supply for the SAT IF path, reducing installation complexity and points of failure. Its die-cast zinc housing ensures durability, and the support for DiSEqC 2.0 allows compatibility with modern satellite receivers.

Ideal use cases

• Distribution of satellite and terrestrial signals in apartment buildings
• Connecting up to four receivers to a dual-satellite dish system
• Small to medium-sized MDU installations where cascading may be required

Good to know

The terrestrial input has a higher through loss (18 dB), which may require amplification in longer cable runs. The matrix is cascadable, allowing expansion to serve more subscribers by connecting multiple units.