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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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For this model, we have new original, cost-effective compatible, and economical second-hand . We provide you with a variety of choices, the same quality! Each products has been strictly tested to ensure stable performance, worry-free use, and enjoy an efficient experience. Full range of options: new original quality assurance, compatible models are super value and practical, and second-hand are economical and durable. Strict quality control: each products is tested before shipment. Worry-free after-sales: warranty commitment, normal use, and quality problems can be returned or exchanged.

About Us

Skyward Telecom also known as Skywardtel, it was established in 2009. From the beginning to the end, we have been based on the
motto of integrity，Our mission is to help engineers and businesses overcome the challenges of acquiring high-quality, low-cost
communication products.And has provided network security and computer asset management solutions for users in more than 80
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FAQ

1. who are we?
We are based in Guangdong, China, start from 2009,sell to Northern Europe(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%),North America(10.00%),Domestic Market(5.00%),South Asia(5.00%),Southern Europe(5.00%),Oceania(5.00%),Central America(5.00%),Africa(5.00%),Eastern Asia(5.00%),Southeast Asia(5.00%). There are total about 80-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
All products are sold only after passing professional technical testing;

3.what can you buy from us?
Brand new, unopened switches, routers, servers, workstations, and other computer peripherals.
Brand new or refurbished equipment and circuit boards.BBU\RRU.
Brand new or custom-made communication cables (coaxial cables, fiber optic cables, network cables, power cords, AISG cables, etc).
Brand new or custom-made connectors.SMA connector, BNC connetor, RF connector, etc.
Brand new or custom-made cooling fans
Base station related accessories.
Weighing controller,Computer software,computer hardware,Weighing transmitter

4. why should you buy from us not from other suppliers?
Best quality！ Lowest price！ Quality assurance, honest transactions! Received high praise from numerous customers！ Leading through
exceptional service and creative solutions to help our partners succeed！
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5. what services can we provide?
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Ericsson Radio 4428 B3B KRC 161 721/1

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