8-channel combiner-equalizer of UMT production is active device specially designed to combine 8 independent IF carriers (L-band, frequency range of 950-2150 MHz) with power adjustment and AGC for each channel.
8-channel combiner-equalizer has 8 RF inputs for 8 IF carriers and 1 or 2 independent outputs. All inputs and outputs work in L-band. 1st output contains full spectrum combined from 8 inputs and is used for further signal transmitting. The 2d output is used for signal controlling (can be added by request) and has up to 30 dB lower signal power than the 1st input.
8-channel combiner-equalizer can be used in MVDS head-end, professional TV link and TV repeater stations due to its features such as automatic gain control (AGC) which provides high stability of output RF-signal power. The case of the 8-channel combiner-equalizer is designed for using in standard 19″ rack.
8-Channel Combiner-Equalizer is a professional active RF conditioning device engineered for combining up to eight independent L-band IF carriers (950–2150 MHz). Each input channel features both manual power adjustment and automatic gain control (AGC), ensuring consistently stable output regardless of input fluctuations. Designed for high-density RF distribution systems, it maintains excellent linearity, minimal intermodulation distortion and uniform group delay, all critical factors for maintaining transport stream integrity.
This model provides 8 RF inputs and up to two outputs: the main full-power combined spectrum output and an optional auxiliary output with –20 dB attenuation for monitoring purposes. This flexibility allows operators to integrate the device into MVDS headends, repeater stations and professional TV link infrastructures without affecting the primary transmission line. The robust 19″ rackmount chassis and 24/7 operating stability make it suitable for mission-critical broadcast environments.
✅ Precision L-band combiner for professional RF systems
The device combines eight IF carriers into a unified, stable output suitable for MVDS uplinks, transmitter feeding or headend redistribution. Its flat gain response across the entire 950–2150 MHz band ensures consistent spectral performance. This makes it ideal for networks requiring high signal integrity and predictable RF behavior.
✅ High stability with AGC and manual power control
Every channel features manual attenuation along with automatic gain control, ensuring that variations in input power do not affect overall output. This provides a stable operating environment for sensitive modulators and transmitters downstream. As a result, operators maintain a constant system balance even under fluctuating input conditions.
✅ Engineered for 24/7 operation in mission-critical systems
The combiner-equalizer is designed for continuous round-the-clock operation with high heat tolerance and long-term stability. Low intermodulation distortion and uniform group delay protect signal quality during prolonged use. Its industrial-grade architecture ensures reliability in professional broadcasting facilities.
🛠️ The 8-Channel Combiner-Equalizer offers precise per-channel RF control, allowing engineers to equalize, balance and combine multiple carriers with high accuracy. Its AGC module maintains constant output levels even under fluctuating input conditions, guaranteeing the stability required for downstream modulators, transmitters and distribution networks. The low intermodulation design ensures clean signal blending without degrading carrier quality or adjacent channels.
🛒 This 8-Channel Combiner-Equalizer is optimized for MVDS, SMATV and RF headend operators who require clean multi-carrier aggregation in a professional L-band workflow. With optional 50Ω N-type or F-type connectors, the unit adapts easily to diverse infrastructure layouts. Its reliability, compact design and precise equalization capabilities make it a practical choice for expanding or upgrading existing RF distribution systems.
📌 Key features
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Automatic gain control (AGC)
AGC keeps the output signal level constant even when individual input carriers fluctuate. This stabilizes downstream RF chains and prevents overloads in modulators or transmitters. It ensures reliable, consistent performance in systems with varying signal sources.
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Manual power adjustment per channel
Engineers can fine-tune each of the eight carriers independently, achieving optimal spectral balance and equalization. This helps mitigate inconsistencies between different modulators or input devices. It is especially useful in large MVDS or headend deployments where carriers originate from multiple sources.
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Low intermodulation distortion
The circuitry is optimized to minimize IMD, preserving the purity of each carrier within the combined output. Low IMD is essential for error-free digital modulation transport. This ensures that downstream equipment receives clean, undistorted IF signals.
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High output power stability and linearity
The device maintains a highly linear response even when handling all eight carriers simultaneously. Stable power output leads to better transmission quality and more precise RF system behavior. This consistency is crucial for multi-carrier digital video distribution networks.
⚙️ Main functions
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Combining eight independent L-band RF carriers
The combiner processes eight IF signals and merges them into a unified broadband output without degrading spectral quality. This function is essential for MVDS uplinks and headend multiplexing. The auxiliary test output allows real-time monitoring without interrupting transmission.
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Stabilizing output power via AGC
The AGC module dynamically adjusts gain to maintain constant output power across all operating conditions. This improves overall system reliability and prevents unexpected overloads. It also reduces maintenance efforts by minimizing the need for manual recalibration.
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Providing clean L-band signal conditioning
The unit equalizes amplitude variations and ensures minimal group delay distortion. This preserves transport stream integrity for digital RF modulation schemes. As a result, downstream devices receive high-quality signals with minimal BER degradation.
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24/7 continuous professional operation
Engineered for permanent installation in broadcast systems, the combiner withstands long operating cycles. Over-temperature, mechanical reliability and electrical stability are core design considerations. This makes the device ideal for critical RF infrastructure.
🧩 Applications
Supports multi-carrier aggregation for MVDS broadcasting networks. Ensures clean RF transport from modulators to transmitters. Enhances system reliability through AGC-stabilized operation.
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Professional TV link and repeater stations
Ideal for RF repeater systems requiring stable IF carrier processing. Maintains signal quality even when source conditions vary. Provides essential equalization functions for link stabilization.
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SMATV and large RF distribution networks
Useful for hotels, campuses and residential distribution systems needing multi-carrier conditioning. Ensures uniform RF levels across complex layouts. Reduces maintenance time by preventing overload and distortion conditions.
💡 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 8-Channel Combiner-Equalizer, 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.
