Sumator RTV/SAT x4 DIGISAT 104 — 4-input RF combiner for terrestrial and satellite signals

RTV/SAT x4 DIGISAT 104 is a four-input RF combiner designed to merge terrestrial (RTV) and satellite (SAT) antenna signals into a single output. The device is intended for residential and small commercial installations where multiple antenna feeds must be consolidated for distribution to a set-top box, TV tuner or distribution amplifier. The compact unit accepts up to four independent RF inputs and provides a single combined output suitable for onward distribution over coaxial cable.

Advantages

The DIGISAT 104 provides a simple, space-saving solution for combining multiple antenna sources without changing cabling infrastructure. It preserves signal polarity and supports common RF frequency ranges used by terrestrial and satellite services, enabling straightforward integration with existing reception equipment. The passive combiner requires no external power, which reduces installation complexity and ongoing maintenance needs.

Suitable for

• Home TV systems that require combining rooftop antenna and satellite feeds
• Small apartment buildings or multi-room setups with a single coaxial distribution line
• Temporary or permanent installations where up to four RF sources must be consolidated
• Integration with set-top boxes, TV tuners and distribution amplifiers

Key specifications

• Number of inputs: 4 RF inputs for combined terrestrial and satellite signals
• Output: single combined RF output compatible with coaxial distribution
• Design: passive combiner requiring no external power supply
• Casing: compact housing suitable for installation in equipment racks or near antenna entry points
• Compatibility: supports standard terrestrial and satellite RF frequency ranges and common connector types

How to use

Connect each antenna feed to one of the four RF input connectors and route the combined output to the receiving device or distribution amplifier. Ensure connectors are securely tightened and use appropriate impedance-matched coaxial cable (75 ohm) for all connections. Position the unit close to the antenna entry or distribution point to minimise cable runs and signal loss. If installing in an environment with long cable runs, verify signal levels at the receiving equipment and consider using an inline amplifier if necessary.

Usage recommendations

Use quality 75 ohm coaxial cables and weatherproof connectors for outdoor antenna connections. Avoid exceeding the recommended number of cascaded passive devices to prevent excessive insertion loss. When combining signals from active satellite LNBs, ensure Sat power is supplied where required — supply power should be provided separately through the receiver or a powered splitter if needed.