Description

Nokia FLEGHK 474452A AirScale Tri-Band Twin TMA B1/B3/B7 Tower Mounted Amplifier

Nokia 474452A FLEGHK, AIRSCALE, TRI-BAND TWIN TMA, 1800/2100/2600MHz, B1/B3/B7, Uplink LNA,  4.3-10, IP67

1- Technical Description Nokia FLEGHK 474452A

The Nokia FLEGHK 474452A is an outdoor-grade, advanced AirScale-generation Tri-Band Twin Tower Mounted Amplifier (TMA) designed to optimize uplink sensitivity on multi-generation macro cell sites. Positioned directly adjacent to masthead antennas, it leverages dual Low Noise Amplifiers (LNAs) across three separate frequency spectrum blocks simultaneously. This configuration counteracts physical signal loss across long tower coaxial feeder trunks, lowering noise figures, improving edge-of-cell data throughput rates, and balancing tower hardware load dynamics.

2- Specifications and Features Nokia FLEGHK 474452A

The mechanical form factors, electrical thresholds, and structural traits of the unit include:

3- Application, Strategy, and Topology Nokia FLEGHK 474452A

• Application Scenario: Deployed primarily on multi-standard macro networks where massive high-speed 4G/5G deployments co-exist on Bands 1, 3, and 7, requiring clean uplink gains at long transmission distances.
• Strategic Concept: Maximizes “One Antenna, Multi-Band” site builds. It minimizes costly mechanical tower upgrades by filtering and amplifying three crucial traffic bands inside a single Twin TMA enclosure, completely removing the need for three separate single-band tower units.
• Topology Mapping:
  • Antenna Line Integrated Path: Placed right at the top of the tower head, serving as the physical bridge separating multi-band cross-polarized antennas from the main tower feeders.
  • Triplexed Trunk Distribution: Interfaces via integrated RF filters to pass B1, B3, and B7 traffic over common physical RF infrastructure lines back to ground hardware.

4- Compatible BBU, RRU, and Boards Nokia FLEGHK 474452A

• Compatible Remote Radio Units (RRUs): Nokia AirScale Multi-Band Radios and Flexi RF Modules supporting matching bands, including the FXEB (B3), FRGY (B1), and FRHA (B7).
• Baseband Unit Integration: Interfaces directly back through standard radio nodes into Nokia AirScale System Modules (AMIA chassis) configured with ABIA capacity or ASMR/ASFI master processing cards.

5- Frequency Spectrum Nokia FLEGHK 474452A

The device operates strictly across three target frequency duplex layouts, splitting transmission (TX) and reception (RX) paths as follows:

• Band 3 (1800 MHz): RX Uplink: 1710–1785 MHz | TX Downlink: 1805–1880 MHz
• Band 1 (2100 MHz): RX Uplink: 1920–1990 MHz | TX Downlink: 2110–2170 MHz
• Band 7 (2600 MHz): RX Uplink: 2500–2570 MHz | TX Downlink: 2620–2690 MHz

6- Variants and Similar Products from Nokia

• Nokia FLEGHK (Part Number: 474375A): The baseline Flexi-generation structural equivalent of this triple-band twin TMA array.
• Nokia FLDK (Part Number: 474128A): Sibling low-band dual alternative tailored specifically for legacy EU800 and EU900 macro installations.

7- Competitor Equivalents Nokia FLEGHK 474452A

The following multi-vendor hardware matrix outlines alternative, outdoor-grade active Tri-Band Twin TMA platforms engineered to support Band 1 (2100MHz), Band 3 (1800MHz), and Band 7 (2600MHz) uplink paths simultaneously:

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