Which LNB Should I Choose? Comparing Single, Twin, Quad and Quattro LNBs

The LNB (Low Noise Block Converter) is one of the most important components of any satellite reception system.

It is responsible for receiving the satellite signal from the dish antenna and converting it into frequencies that can be transmitted through a coaxial cable to the receiver or distribution system.

Choosing the right LNB has a direct impact on reception quality, signal stability, and the future expandability of the installation.

The Kathrein LNB range covers both residential and professional applications, offering solutions for individual users, apartment buildings, hotels, and modern signal distribution systems.

Universal Single LNB - KEL 411

Universal Single LNBs are designed for satellite installations that require connection to a single satellite receiver.

They are the ideal solution for small residential installations where no future system expansion is planned.

Advantages:

• Easy installation
• Low power consumption
• High reliability
• Ideal for a single satellite receiver

Universal Twin LNB - KEL 422

The Universal Twin LNB is the ideal solution for installations that require the independent connection of two satellite receivers or a PVR receiver with a dual tuner.

It is fully compatible with HDTV and DVB-S2 standards and is designed for receiving digital satellite signals from Ku-band satellites such as Astra, Eutelsat, and Hotbird.

Unlike a Single LNB, a Twin LNB allows two receivers to operate simultaneously and independently without restrictions on channel selection or polarization.

Advantages:

• Two independent outputs
• Ideal for two TVs or a PVR receiver with Twin Tuner
• HDTV and DVB-S2 compatible
• Suitable for satellite systems with a 40 mm LNB mount
• Supports Astra, Eutelsat, Türksat, and other Ku-band satellites

Ideal For:

• Apartments
• Single-family homes
• Installations with two reception points
• PVR and Twin Tuner users

Universal Quad LNB - KEL 444

The Universal Quad LNB features four independent outputs, allowing the connection of up to four satellite receivers or two PVR receivers with dual tuners.

It is an excellent choice for installations that require multiple independent viewing points without the need for a multiswitch.

Ideal For:

• Single-family homes
• Large residential properties
• Small commercial installations
• Users requiring independent satellite reception at multiple locations

Key Features:

• Four independent outputs
• HDTV compatible
• DVB-S2 support
• Supports Astra, Eutelsat, Hotbird, Türksat, and other Ku-band satellites
• 40 mm feedhorn diameter (LNB mount)

Quattro LNB - KEL 440

Quattro LNBs are specifically designed for multiswitch installations and large satellite distribution systems.

Unlike Quad LNBs, they are not connected directly to satellite receivers. Instead, they provide the four satellite IF polarities and bands separately to a multiswitch, which then distributes the signal to multiple users.

Applications:

• Apartment buildings
• Hotels
• MATV and SMATV systems
• Commercial and office buildings

Advantages:

• Supports large-scale distribution networks
• High signal stability
• Easy system expansion and scalability

Which LNB Should You Choose?

The right LNB depends on the number of users, the type of receivers, and the overall architecture of the satellite distribution system.

Why Choose Kathrein LNBs?

Kathrein is one of the world's leading manufacturers of satellite reception equipment, known for engineering excellence, reliability, and long-term performance.

Kathrein LNBs are designed to provide stable signal reception, low-noise performance, and full compatibility with modern satellite distribution systems, making them suitable for both residential and professional installations.

LYRA SA, the official Kathrein representative in Greece, provides technical support and complete satellite system solutions for every type of installation.

Common Installation Mistake

Many installers choose an LNB based only on price or the number of outputs, without considering future network expansion requirements.

Recommended Solution

Before selecting an LNB, it is important to determine:

• The number of users
• The number of satellite receivers
• The system architecture
• Future expansion requirements

Choosing the correct LNB from the beginning reduces upgrade costs and improves long-term system reliability.