1. Product Overview

The Nokia FHEB is an outdoor 2×60W Remote Radio Unit (RRU) designed for 1800 MHz (Band 3) LTE and GSM deployments. It is part of Nokia's Flexi Multiradio portfolio, offering a compact and efficient solution for macro cell base stations. The FHEB is suitable for various deployment scenarios, including urban and rural environments, and supports both single-carrier and multi-carrier configurations.

2. RF & Frequency Specifications

• Supported RATs: GSM, FDD-LTE

• MIMO Configuration: 2T2R (Two Transmit, Two Receive)

• TX Frequency Range: 1805–1880 MHz

• RX Frequency Range: 1710–1785 MHz

• Downlink Instantaneous Bandwidth:

• Shared with GSM: 35–40 MHz

• LTE Only: 40 MHz

• Uplink Instantaneous Bandwidth: 60 MHz

• Filter Bandwidth: 75 MHz (both DL and UL)

• Output Power: 2 × 60 W (total 120 W)

• Interfaces:

• Antenna Connectors: 2 × 7/16 DIN

• Optical Interface: 2 × SFP (6 Gbps)

• Power Connector: 3-pole screw terminal

• Remote Electrical Tilt (RET): 1 × 8-pin circular

• External Alarm (EAC): 1 × MDR14 scribd.com

3. Mechanical & Environmental Specifications

• Dimensions: 430 mm (H) × 280 mm (W) × 140 mm (D)

• Weight: Approximately 18 kg

• Mounting Options: Pole or wall mount

• Ingress Protection: IP65 (suitable for outdoor installation)

• Operating Temperature Range: –40°C to +55°C

• Power Supply: –48 V DC (nominal), with a range from –40.5 V to –57 V DC scribd.com

4. System Integration

• Compatible Basebands: Nokia BBU 3900, BBU 3910, and BBU 5900 series

• Interface: Connects to baseband units via CPRI over optical fiber

• Topology: Supports star, chain, and dual-star configurations

• Maximum Distance to BBU: Up to 20 km, depending on CPRI line rate and fiber quality

• Software Compatibility: Supports Nokia's SRAN and AirScale software platforms, enabling features like carrier aggregation and inter-RAT handovers scribd.com

5. Use Cases & Applications

• Urban Macro Cells: Enhancing capacity and coverage in dense urban areas

• Rural Deployments: Providing reliable LTE and GSM services in rural regions

• Network Modernization: Upgrading existing GSM networks to LTE without significant infrastructure changes

• Multi-RAT Networks: Supporting simultaneous GSM and LTE operations in a single unit

6. Quality & Acceptance Checklist

1. Model Verification: Confirm the model number on the unit label matches FHEB 472650A.

2. RF Ports: Inspect the 7/16 DIN antenna connectors for compatibility with existing cables.

3. Optical SFPs: Ensure the SFP modules are correctly installed and compatible with the baseband unit.

4. Power Supply: Verify the –48 V DC power input is correctly connected and within the specified range.

5. RET Functionality: Test the 8-pin circular connector for proper Remote Electrical Tilt operation.

6. External Alarm: Check the MDR14 connector for alarm signaling functionality.

7. Environmental Sealing: Ensure the IP65 rating is intact, with no signs of ingress or corrosion.

8. Software Compatibility: Verify the unit's software version is compatible with the network's requirements.

7. Open Sources for Verification

• Scribd Document: Flexi Remote Radio Head 2TX 1800 (FHEB) Technical Specifications scribd.com

• Alibaba Product Listing: Nokia FHEB 472650A FLEXI RRH 2X60W TX 1800 Alibaba

• Nokia Official Website: AirScale Radio Access Solutions Nokia Corporation | Nokia