1730

Crossover

Short description

Crossover developed by UMT LLC is designed especially for step-up converter blocks power supplying. It has integrated stable pulsed power supply source inside, which is characterized by high performance.

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Crossover is used for indoor application and supplied step-up converter blocks can be located outside. As a result you obtain efficient, safety and reliable in operation system.

For this purpose, next devices are installed into the block:

  • network pulsed power supplies (AC/DC-converters);
  • amplifier;
  • and power injector

Power supply voltage with RF signal are delivered to ODU blocks.

 

General parameters
Frequency range, MHz L-band (other by request)
Input, output impedance, Ohm 50Ω / 75Ω
VSWR input/output 1.5
Gain variation (on each of the outputs relative to inputs), dB by order
Nominal output voltage А (main) and В (reserve), V +24
Maximal load current on outputs, А 2.5
Maximal power, consumption of network, W 200
Input connector N-Type or F – type (Female)
Output connector N-Type or F – type (Female)

RF Crossover is an indoor distribution module designed for professional L-band RF systems where remote outdoor units (ODUs) require stable power and clean, conditioned signal delivery. This crossover integrates an amplifier, power injector and AC/DC step-up conversion platform, forming a protected and efficient indoor powering system for MVDS, satellite IF networks and RF headends. With support for both 50-ohm and 75-ohm infrastructures, it adapts seamlessly to mixed-impedance RF environments commonly found in broadcast and telecom installations.

By locating the AC/DC converters indoors, the system significantly improves reliability and service life, shielding critical electronics from harsh outdoor conditions. The crossover distributes both RF and power simultaneously to outdoor units, ensuring steady 24V operation with up to 2.5A load per output channel. This architecture reduces maintenance, increases system uptime and enhances overall safety in professional RF deployments.

Integrated indoor power and RF distribution

The crossover combines AC/DC conversion, RF amplification and power injection inside a single indoor-safe housing. This allows operators to keep vulnerable electronics protected from weather and temperature extremes. It results in a more reliable and longer-lasting RF distribution system, ideal for mission-critical broadcasting installations.

Stable 24V power injection for outdoor units

Providing +24V and up to 2.5A load capability, the crossover reliably powers ODUs, LNAs, converters or microwave transmitters. The unified RF+DC feed reduces cabling complexity while ensuring stable outdoor operation. This centralized powering approach simplifies headend design and increases system resilience.

Optimized for L-band IF networks and professional RF systems

With support for the full L-band range (950–2150 MHz by default), the crossover is ideal for MVDS, satellite distribution and IF transport systems. Its low VSWR and clean amplification help preserve signal integrity in large and complex RF infrastructures. It integrates smoothly into TV broadcasting, telecom networks and RF matrix systems.

🛠️ The RF Crossover provides highly stable L-band performance with low VSWR, making it an ideal component for headends, repeater stations, MVDS networks and uplink/downlink infrastructures. Its integrated amplifier ensures clean RF transmission, while the power injector eliminates the need for separate cabling, reducing infrastructure complexity and installation costs. Designed for continuous 24/7 service, it maintains signal consistency even under demanding load and environmental variations.

🛒 This device is essential for systems where centralized powering, RF conditioning and distribution must be handled efficiently from an indoor point. With selectable N-type or F-type connectors, it supports both high-power professional installations and cost-optimized CATV-style infrastructures. Engineers deploying multi-carrier IF networks or powering multiple ODUs benefit greatly from the crossover’s robust, expandable and service-friendly design.

📌 Key features

  • Indoor L-band RF and power distribution system

The crossover is engineered for indoor operation, enabling installation in climate-controlled rack spaces while powering external RF devices. This improves overall stability by relocating sensitive electronics indoors. The modular structure makes it suitable for long-term professional headend deployments.

  • Integrated amplifier, AC/DC converters and power injector

All critical components, including pulsed AC/DC converters, an RF amplifier and the power injector, are built into a single compact module. This reduces the need for separate external devices and ensures optimal internal signal routing. The unified design improves performance while minimizing potential points of failure.

  • Selectable 50Ω / 75Ω system compatibility

Supporting both impedance standards allows the crossover to operate in satellite-grade 50-ohm systems or CATV-style 75-ohm infrastructures. This flexibility is crucial for hybrid installations where different equipment types must coexist. It ensures easy integration into almost any L-band distribution network.

  • Optional gain adjustment and output power customization

Gain variation specifications can be customized according to the operator’s system requirements. This allows optimization for long cable paths, multi-carrier systems or specific transmission loads. It provides full control over RF distribution characteristics in professional installations.

⚙️ Main functions

  • RF pass-through with amplification and equalization

The crossover conditions and amplifies the L-band signal to maintain stable carrier levels across long cable distances. This preserves modulation quality for DVB-S/S2, DVB-T/T2, DVB-C and MVDS transport streams. It ensures minimal signal degradation even in multi-carrier environments.

  • 24V DC power injection over RF line

The unit delivers stable DC power along the same RF cable feeding ODUs or other active components. This eliminates the need for separate power wiring and improves installation efficiency. With up to 2.5A support, it powers a wide range of outdoor RF devices reliably.

  • Centralized indoor power management

By placing all AC/DC conversion internally, the crossover reduces outdoor component stress and extends equipment lifetime. It also minimizes field maintenance and simplifies troubleshooting. Operators gain a cleaner, safer and more manageable power architecture.

  • Low VSWR and high RF stability across L-band

The device maintains a low VSWR of 1.5, ensuring minimal signal reflection and optimal RF path performance. This results in cleaner carrier characteristics, especially important for COFDM, QAM and APSK systems. Engineers can rely on stable performance for 24/7 operation.

🧩 Applications

  • MVDS headends and multi-carrier distribution networks

Ideal for powering ODUs and distributing multiple IF carriers in MVDS broadcast networks. Stable RF performance and indoor power conversion ensure long-term reliability. It supports dense multi-transmitter or multi-sector infrastructures.

  • Satellite IF transport, SMATV and uplink/downlink systems

Ensures stable power and RF delivery to outdoor converters, LNAs or frequency translation units. The crossover improves infrastructure efficiency by eliminating external powering hardware. It integrates naturally into satellite gateway and hotel SMATV systems.

  • Telecom, repeater and professional RF infrastructures

Suitable for telecom towers, repeater stations and large RF distribution matrices. Operators benefit from centralized powering and improved indoor equipment protection. It is especially valuable where continuous 24/7 operation is mandatory.

💡 Why you should buy from us❓

  • 1.5 years warranty
  • 7 years after-sales support
  • Remote support team of engineers
  • Discount program for regular customers 🎁

💬 Contact Us

For additional details or assistance regarding the RF Crossover, feel free to contact our team. We provide professional consultation and aftersales support to help with installation and setup, ensuring you get the most out of your broadcasting equipment.

Taking into consideration that we (UMT LLC) are developer and system integrator, also do not stop on our technical growth and improvement, know that view of all our devices and equipment including their technical parameters may be different from pictures presented on website and parameters listed on each device webpage.
Note! All details customer has to confirm in advance during ordering and before payment. Those parameters that were not specified and / or were not agreed while ordering will be implemented as basic at the discretion of the manufacturer. Each our customer has 1.5 year warranty and 7 year aftersales support for whole range of our products.

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