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Ericsson Radio 4428 B3B KRC 161 721/1

Ericsson Radio 4428 B3B KRC 161 721/1

Ericsson Radio 4428 B3B (Internal Part Number: KRC 161 721/1) is a Remote Radio Unit (RRU) — a core radio frequency component of Ericsson's macro base station series, compatible with multiple generations of mobile communication technologies. Below is its detailed information:

1. Basic Product Information

Public Model: Ericsson Radio 4428 B3B
Internal Part Number: KRC 161 721/1
Device Category: Macro base station Remote Radio Unit (RRU), a key part of Ericsson's Radio System portfolio, widely used in wireless communication infrastructure construction.

2. Core Technical Specifications

Frequency Band & Compatible Technologies: The "B3B" in the model corresponds to the 3GPP FDD Band 3 (i.e., the mainstream 1800MHz band), compatible with GSM, WCDMA, and LTE technologies. It supports up to 12 carriers for GSM, 8 carriers for WCDMA, and 6 carriers for LTE in MIMO mode.
Transmission & Antenna Configuration: Adopts 4T4R (4 Transmitters, 4 Receivers) MIMO technology with a maximum transmission power of 4×40W; equipped with 4 antenna ports of 4.3-10 (F) specification, and supports AISG Tower Mounted Amplifier (TMA) and Remote Electrical Tilt (RET) functions, compatible with 12dB TMA via RS-485 interface.
Hardware & Connectivity: Connected to baseband units via optical fiber, supporting cascaded or star topology networking with a maximum distance of 40km from the baseband unit; equipped with 2 CPRI interfaces with speeds of 2.5/4.9/9.8/10.1Gbps (SFP optical modules replaceable); weighs 16kg with a volume of 15L, supporting rail-mounted, wall-mounted, and pole-mounted installations.
Power Supply & Protection: Compatible with the standard -48V DC power supply for base stations; features an IP65 protection rating, operating temperature range of -40℃ to +55℃, and supports startup in low-temperature environments of -40℃, adapting to complex outdoor working conditions.

3. Core Application Scenarios

With its flexible installation methods and stable multi-technology compatibility, this device is widely used for large-scale mobile communication signal coverage in urban, suburban, and other areas. It can be combined with Ericsson's corresponding baseband units to build a complete macro base station system, supporting signal transmission and reception needs for 2G, 3G, and 4G networks, as well as adapting to communication loads after network upgrades. Additionally, its single-bolt installation design and multiple networking modes reduce the deployment difficulty of single-band and multi-band macro base stations.

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Ericsson Radio 4428 B3B KRC 161 721/1