Installation and safety instructions

•The units described are intended solely for the installation of satellite receiver systems.

•Any other use, or failure to comply with these instructions, will result in voiding of warranty cover.

•The units may only be installed in dry indoor areas. Do not mount on or against highly combustible materials.

•The units should be provided with an equipotential bonding wire (Cu, at least 4 mm2).

• The safety regulations set out in the current EN 60728-11 and EN 60065 standards must be complied with.

•Suitable securing fastenings: Wood screws, max Ø: 4.5 mm

•Connector: HF plug 75 Ω (series F) to EN 61169-24.

General information on installation

Installation of an ampliﬁer in a satellite reception system

In principle, the ampliﬁer can be built into any position in the Sat reception system (see section “System example”). The following is to be observed:

-the level on the input should fall within the range between 50 to max. 80 dµV and

-the multi-switches following are not to be overdriven

Levelling the ampliﬁer

In order to deﬁne the level, it is recommended to use an antenna measuring instrument, e.g. MSK 200. You can adjust the gain in 1-dB increments (see picture on right). The attenuator affects all Sat-range ampliﬁer units at the same time.

To equalise attenuation slopes, such as in long cable lengths, the ampliﬁer’s pre-equalisation can be set to 2, 4 and 6 dB. The terrestrial ampliﬁer is adjusted with its own attenuator.

Connection of the ampliﬁer to other units of the Sat reception system

The easiest and quickest way to connect the am- pliﬁer to, e.g. a EXR 2558/EXR 2998 multi-switch is by using the optional connector EMU 250 (see picture on right) or the EMU 290 as is required for the VWS 2991. This enables the units to be connected to each other directly.

If the units are far apart, it is recommended to use high-quality coaxial cables (with very high screening values) e.g. LCD 111. If possible, use high-quality F- type connectors (see picture right) for “crimping” or compression connectors (see Kathrein catalogue “Satellite and terrestrial antenna products and systems”).

When using coaxial cables, it is especially important to make sure that the inputs and outputs are correctly assigned to one anoth- er. The ampliﬁer’s “V low” output must be connected to the multi- switch’s “V low” input, etc.

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VWS2551, VWS2991 specifications

Kathrein, a renowned name in the telecommunications industry, offers a variety of advanced products designed to enhance network performance and efficiency. The VWS2991 and VWS2551 are two of the company's leading models in the field of vehicular wireless systems, tailored to meet the demands of modern connected environments.

The Kathrein VWS2991 is a robust vehicular wireless system specifically engineered for applications requiring high data rates and reliable connectivity. This model employs cutting-edge technologies, including MIMO (Multiple Input Multiple Output) and advanced antenna systems, which significantly enhance signal quality and transmission speeds. The VWS2991 supports various frequency bands, making it versatile for use in diverse environments, from urban to rural settings.

One of the standout features of the VWS2991 is its ability to handle multiple simultaneous connections, making it ideal for scenarios where multiple devices require internet access. This is particularly useful in public transport, emergency services, and logistics applications where consistent connectivity is crucial. Additionally, the device is designed with durability in mind, ensuring reliable operation in challenging weather conditions and rough terrains.

On the other hand, the Kathrein VWS2551 serves as a compact and efficient solution tailored for vehicular applications that demand seamless wireless communication. This model is optimized for LTE and 5G networks, enabling high-speed data transfer and low latency, crucial for applications such as real-time monitoring and data analytics. The VWS2551 also incorporates MIMO technology, which enhances its performance in high-density areas where signal interference can occur.

The compact design of the VWS2551 allows for easier installation in various vehicle types, ensuring that space is maximized without compromising performance. It is also equipped with intelligent management features that allow for remote monitoring and configuration, which is invaluable for fleet operators looking to streamline their operations and reduce maintenance costs.

In terms of security, both the VWS2991 and VWS2551 come equipped with robust encryption protocols that safeguard the transmission of sensitive data against unauthorized access. This characteristic is particularly important in industries such as public safety, where data integrity is paramount.

In summary, the Kathrein VWS2991 and VWS2551 exemplify the company's commitment to delivering cutting-edge vehicular wireless solutions. With features such as MIMO technology, versatility in frequency support, and robust security measures, both models play a critical role in enhancing connectivity in an increasingly mobile world. Their durability and intelligent design make them leading choices for organizations looking to leverage advanced wireless technologies in their operations.