Opticum SUMATOR RTV/SAT IN coaxial signal combiner for terrestrial TV and satellite IN (model 18928)

Opticum SUMATOR RTV/SAT IN coaxial signal combiner for terrestrial TV and satellite IN (model 18928) is a passive device that merges terrestrial (RTV) and satellite (SAT) coaxial signals into a single input line. It allows connection of an antenna and a satellite feed to equipment with one coaxial IN, simplifying installations in apartments, homes and small-scale setups where a combined feed is required for set-top boxes, televisions or receivers.

Advantages

The combiner provides a compact and passive solution to combine two RF sources without the need for external power. Its straightforward coaxial connectors reduce cable clutter and installation complexity. As a passive device, it maintains signal paths for both terrestrial and satellite sources while minimizing additional components in the signal chain. The unit is compatible with standard coaxial cables and fittings used for RTV and SAT systems.

Suitable for

• Homes and apartments where a single coaxial input is available
• Set-top boxes and TVs that accept a combined antenna/satellite feed
• Small installations requiring a compact, passive combiner
• Temporary installations or testing setups for RTV and SAT equipment

Key specifications

• Function: Passive coaxial combiner for merging terrestrial and satellite signals into one output
• Connectors: Standard male/female coaxial connectors compatible with RTV and SAT cabling
• Frequency coverage: Designed for use across typical terrestrial TV and satellite frequency ranges
• Power: Passive device, does not require external power supply
• Construction: Compact housing suitable for indoor mounting and simple integration into existing cabling

How to use

Connect the terrestrial antenna coaxial cable to the RTV input and the satellite dish coaxial cable to the SAT input. Then connect the combiner output to the single coaxial IN on the set-top box, TV or receiver. Ensure connectors are tightened securely to maintain signal integrity and avoid loose fittings. As the device is passive, no power connection is needed. If signal levels are low, consider using amplification or checking cable quality upstream of the combiner.

Usage recommendations

Use short, high-quality coaxial cables and properly shielded connectors to preserve signal quality. Avoid placing the combiner outdoors or in damp environments; install it indoors or in a dry enclosure. When combining signals for devices that require powered satellite LNB control (13/18 V, 22 kHz), verify compatibility of the receiver and any inline amplifiers to ensure correct power and control signals are delivered to the satellite dish.