DVB-T Modulator

DVB-T Modulator is a high-performance DVB-T / DVB-T2 RF modulator designed for terrestrial digital TV networks, CATV headends, campus TV and hybrid IP/RF distribution systems. Supporting QAM16, QAM32 and QAM64 constellations and symbol rates up to 45 Msym/s, it generates broadcast-grade DVB-T carriers with excellent MER and long-term stability. Its wide 70–865 MHz RF output range makes it compatible with most regional and international VHF/UHF broadcast frequency plans.

This DVB-T/T2 modulator can be delivered with 1 to 32 independent modulation channels, enabling operators to build compact and scalable headend systems. Adjustable RF output levels, optional 10 MHz reference input and 24 V / 3 A DC power injection support make it suitable for professional DVB-T modulation chains, including amplifiers, combiners and remote RF equipment.

✅ High-quality DVB-T/T2 QAM modulation for terrestrial networks

The DVB-T Modulator supports QPSK and up to 64-QAM modulation, allowing operators to choose between robustness and capacity for each multiplex. It is optimized for DVB-T and DVB-T2 headends, where stable QAM modulation is critical for coverage and service quality. This flexibility ensures compatibility with a wide range of DVB-T receivers and integrated digital TVs.

✅ Wide 70–865 MHz RF output for VHF/UHF and CATV bands

With an RF output spanning from 70 MHz up to 865 MHz, the DVB-T Modulator can be used for terrestrial DVB-T broadcasting, private UHF networks and cable TV distribution. This range covers typical DVB-T/T2 channels and CATV operating bands, making the device ideal for multi-purpose deployments. Fine-tuned frequency allocation allows precise positioning of DVB-T carriers within existing RF grids.

✅ High MER performance for clean COFDM DVB-T waveforms

The MER >40 dB ensures excellent modulation quality for DVB-T networks, minimizing errors and improving reception stability. This high MER is particularly important when operating in noisy RF environments or long distribution networks. It provides enough margin for multi-device cascades, splitters and amplifiers without compromising service quality.

✅ Scalable multi-channel DVB-T / DVB-T2 headend architecture

The DVB-T Modulator can be produced with 1 to 32 independent DVB-T modulation channels, each configured with its own frequency and QAM settings. This multi-channel capability enables dense headends where many DVB-T/T2 multiplexes are generated in one rack unit. It reduces hardware footprint and simplifies cabling for operators expanding their digital TV services.

🛠️ The DVB-T Modulator is fully controllable via Ethernet (RJ-45) with dedicated VCC software, enabling remote configuration of frequency, bandwidth, QAM constellation and RF level. This makes it easy to integrate into modern IP-managed headends and NMS platforms. All critical parameters are stored in non-volatile memory, ensuring automatic recovery after power interruptions.

🛒 This DVB-T / DVB-T2 RF modulator is ideal for national and regional broadcasters, cable TV operators, ISPs, hotel TV systems and campus networks that need robust DVB-T modulation. With a wide RF range, high MER, scalable channel count and optional synchronization features, it provides a flexible and future-proof solution for terrestrial and cable digital TV distribution.

📌 Key features

• DVB-T / DVB-T2 QAM modulation from QPSK to 64-QAM

The modulator supports a full range of constellations used in DVB-T networks, including robust QPSK for difficult coverage and 64-QAM for high-capacity multiplexes. This allows operators to adapt each carrier to terrain, reception conditions and service requirements. It ensures compatibility with DVB-T set-top boxes and integrated DVB-T/T2 televisions.

• 70–865 MHz RF output for terrestrial and cable bands

The broad RF output range covers standard UHF/VHF channels used in DVB-T broadcasting and intermediate bands used in cable networks. Operators can place DVB-T multiplexes at optimal frequencies to fit existing channels and avoid interference. This flexibility simplifies integration into complex RF infrastructures.

• High MER (>40 dB) for stable DVB-T performance

With MER above 40 dB, the DVB-T Modulator produces very clean COFDM waveforms, reducing bit errors and improving overall reception quality. This is critical for delivering HD content and supporting multi-path propagation environments. High MER also adds robustness when cascaded with amplifiers and combiners.

• Configurable 1–32 DVB-T modulation channels per chassis

The device can be delivered as a simple single-channel DVB-T modulator or as a dense multi-channel platform for larger headends. Each channel operates independently, enabling operators to expand service capacity without replacing core hardware. This multi-channel capability is particularly attractive for cable and IPTV operators.

• Optional 10 MHz reference input and 24 V DC injection

Optional synchronization through a 10 MHz reference allows precise alignment with other RF equipment in large DVB-T/T2 networks. The 24 V DC injection option lets the modulator power external BUCs or amplifiers directly over the RF cable, simplifying system design and power distribution.

• Robust RF output power of 80–107 dBµV with N/F/SMA connectors

The DVB-T Modulator delivers strong RF output that can be tuned to match different network loads. With support for N-type, F-type or SMA connectors, it adapts to a variety of professional and semi-professional installations. This ensures stable integration into RF racks, test setups and distribution systems.

⚙️ Main functions

• Ethernet remote management and monitoring

All DVB-T modulation parameters can be configured remotely using Ethernet and VCC software, including frequency, bandwidth, QAM mode and RF level. This allows centralized management of multiple sites and quick reconfiguration of services. It also supports integration with network monitoring platforms.

• Automatic configuration restore after power loss

The modulator stores its configuration in non-volatile memory, so after any power interruption it automatically resumes broadcasting with previous settings. This is crucial for 24/7 DVB-T headends, where manual intervention is undesirable or impossible. It improves network resilience and uptime.

• Integrated power-stage protections

The DVB-T Modulator includes over-voltage, overload and short-circuit protection on its power stages. This prevents damage due to wiring errors, transient disturbances or faulty external components. It significantly extends the lifetime of the system and ensures safe operation.

• Flexible DVB-T bandwidths of 5, 6, 7 and 8 MHz

Support for multiple bandwidths allows using the modulator across different regulatory regions and DVB-T deployment standards. Operators can optimize spectral efficiency by choosing exactly the bandwidth required for their multiplex. This is especially useful in multi-country or cross-standard networks.

🧩 Applications

• Terrestrial DVB-T broadcasting networks and gap-filler systems

The DVB-T Modulator is ideal for generating primary multiplexes or feeding gap-fillers and repeaters in terrestrial digital TV networks. Its high MER and stable RF output ensure consistent coverage across urban and rural areas. Broadcasters can rely on it for both main and auxiliary transmitters.

• Cable TV DVB-T overlay and internal RF distribution

Many cable operators use DVB-T modulation inside their networks for distributing digital channels over coaxial infrastructure. This modulator, with its 70–865 MHz range and strong output, integrates well into CATV headends where DVB-T is used as a distribution layer. It supports multiple channels for expanded service.

• Hospitality, campus and enterprise DVB-T systems

Hotels, universities, offices and stadiums can deploy internal DVB-T networks to distribute TV content to multiple rooms and locations. The DVB-T Modulator provides stable COFDM carriers that are easily received by standard DVB-T televisions. This eliminates the need for individual IP set-top boxes at each endpoint.

• MVDS, MMDS and RF link projects

In MVDS or microwave-based distribution projects, the DVB-T Modulator can be used as the source of COFDM signal feeding RF upconverters or relay systems. Its robust output and flexible frequency planning make it suitable for point-to-multipoint video distribution networks. It is well-suited for local TV or community broadcasting.

• Broadcast and RF labs for DVB-T equipment testing

Due to its high MER, configurable QAM modes and wide frequency range, the DVB-T Modulator is an excellent tool for engineering labs and test facilities. It allows simulation of real DVB-T network conditions for testing receivers, amplifiers, filters and antennas. This supports R&D and product certification workflows.

💡 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 DVB-T Modulator, 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.