Four individually selected antennas
Variable Gain LNA/BDC with AGC
User Friendly Operation

Field Proven Performance, Reliability and User Friendly Operation

The NSI Quad™ central receive antenna system is field proven for analog and digital applications. It NSI Quad Concept provides critical performance advantages required to maximize the area of coverage and to ensure robust digital live shots. In addition, it is built to ensure years of reliable operation with minimum maintenance.

The Quad™ Concept

The Quad™ central receive antenna system features four individually selected antennas, each covering a 90-degree sector. It is the ideal solution for some installations – such as the corners of a building rooftop.

Variable Gain LNA/BDC with AGC

The dynamic range of the LNA and block downconverter (BDC) has proven to be a critical determinant in maximizing the area of coverage for digital shots. Modern LNA/BDC designs have little difficulty handling low signal levels, as found in a distant shot. However, a high signal level from a transmitter close to the central receive site can saturate the LNA and/or overload the receiver, which will cause a digital shot to fail. Quad™ central receive antennas feature a unique LNA/BDC assembly with a continuously variable level control to ensure the robustness of live shots from practically underneath the antenna out to the NSI - Quad Variable Gain LNA

radio horizon and everywhere in between. The Automatic Gain Control function of the NSI MC5 remote control automatically optimizes the LNA/BDC level to maximize the RSL without overloading the receiver

The LNA/BDC assembly is typically located in the central junction box. Alternatively, an LNA/BDC assembly can be installed in each Quad™ antenna for configurations with long cable runs between the antennas and the central junction box.

User Friendly Operation

The superior performance and reliability of the Quad™ is complemented by the NSI MC5 remote control. Its user friendly control panels feature straight forward control buttons and meters, providing intuitively easy operation and a short learning curve. The MC5 also includes several advanced functions to simplify and enhance daily operations.

Preset Function

The Preset function allows up to 100 preset positions per central receive system to be programmed into the MC5 remote control for instant recall. Each preset includes all of the antenna and receiver settings. It is ideal for storing the settings of frequently used locations as well as rapidly switching between back-to-back live shots. Presets can be established in a matter of seconds, making it a practical feature for use in daily operations. The presets can be selected from the Preset window or from control buttons on the equipment control panel. Each preset can be given a user-defined name, such as City Hall or Van 5. In addition, each preset can include text, such as parking instructions for the live truck operator – a useful feature for frequently used locations.

Spectrum Analyzer Control

The MC5 remote control provides complete control and monitoring of a variety of spectrum analyzers located at the central receive system sites. This advanced function is essential for digital operations. It allows the operator to monitor the signal quality and to identify problems caused by interfering signals, multipath or excessive signal level. NSI Quad Spectrum Analyzer Control

The MC5 also includes several user friendly features to enhance and simplify the control and monitoring of the remote spectrum analyzers. Presets are easily programmed into the MC5 for instant recall of spectrum analyzer settings. Channel markers, frequency markers and a freeze frame function enhance the identification of signals. In addition, the operator has full control of the size and location of the spectrum analyzer display.