Fiber Optical DAS System 700 1800 2100MHz Customizable Output Power Below 2W

Name: Fiber Optical DAS System 700 1800 2100MHz Customizable Output Power Below 2W
Brand: Shenzhen Atnj Communication Technology Co., Ltd.
SKU: AT-DWB28-20
Price: 1400.00 USD
Availability: InStock

Basic Properties

Place of Origin: China Shenzhen

Brand Name: ATNJ

Certification: CE ROHS

Model Number: AT-DWB28-20

Trading Properties

Minimum Order Quantity: 1

Payment Terms: T/T,Western Union,Paypal,Bank transfering

Supply Ability: 1000 units per month

Quad band Active DAS

4G/LTE Fiber Optical DAS

1800/2100/2600MHz Optical DAS

Specifications

Network Protocols:	TETRA/P25/DMR/GSM/WCDMA/LTE/NR/WiFi	Weight:	≦10kgs
System Gain:	Air Coupling:80±3 DB Direct Coupling:40 ±3dB	Power Supply:	AC100-240V In， DC12V3A Out
Frequency Support:	700/1800/2100MHz	Dimensions:	41626899mm
Output Power:	Air Coupling：23± 2 DBm Directing Coupling：-10± 2 DBm /20± 2 DBm	Noise Figure:	≦ 6 DB
RF Connector:	2*N-Female
High Light:	Fiber Optical DAS System , 700 1800 2100MHz DAS , Customizable Output Power DAS

Product Description

Product Overview

The AT-GB2820-25 is a high-performance tri-band repeater engineered to strengthen LTE700 (Band 28), LTE800 (Band 20) and LTE900 (Band 8) coverage simultaneously. The AT-OPT-DWB28-33 is a tri-band optical DAS platform delivering customizable output power below 2 W, with flexible multi-band support for public and private networks.

Front view of the tri-band fiber optical DAS repeater with LCD display — Front view with LCD display

Side view of the repeater showing RF connectors and ventilation — Side view — RF connectors and ventilation

Rear panel of the repeater showing power and control ports — Rear panel — power and control ports

Frequency Band Specifications

Model AT-OPT-DWB28-33 — Tri-Band Optical DAS Technical Parameters. P/N: AT-OPT-DWB28-33.

Parameter	MU	RU
B1 (2100) Uplink	1920 – 1980 MHz	1920 – 1980 MHz
B1 (2100) Downlink	2110 – 2170 MHz	2110 – 2170 MHz
B3 (1800) Uplink	1710 – 1785 MHz	1710 – 1785 MHz
B3 (1800) Downlink	1805 – 1880 MHz	1805 – 1880 MHz
B28 (700) Uplink	703 – 748 MHz	703 – 748 MHz
B28 (700) Downlink	758 – 803 MHz	758 – 803 MHz
Number of Units	1	4, 8 (optional)
Bandwidth	B1: 60 MHz; B3: 75 MHz; B28: 45 MHz	Wide band
System Gain	Air coupling: 80 ± 3 dB; direct coupling: 40 ± 3 dB
Manual Gain Control	31 dB in steps of 1 dB
Automatic Gain Control	≥ 20 dB
Gain Flatness	≤ 6 dB (peak to peak)
Max. Input Power without Damage — Uplink	-10 dBm
Max. Input Power without Damage — Downlink	-10 dBm
Output Power (total)	Air coupling: 23 ± 2 dBm; direct coupling: -10 ± 2 dBm	20 ± 2 dBm
Noise Figure	UL: ≤ 8 dB
EVM	FDD: ≤ 8%
VSWR	≤ 2.5
System Delay	≤ 15 μs
RF Connector	N-Female
Impedance	50 Ω
Optical Output Power	≥ -9 dBm
Optical Wavelength	1330 nm / 1270 nm (DDM)
Fiber	Single Mode
Fiber Connector	LC/PC * 4	FC/PC * 1
Power Supply	AC 110–220 V	AC 110–220 V
Power Consumption	≤ 250 W	≤ 250 W
Dimensions	416 * 268 * 99 mm	416 * 268 * 99 mm
Weight	≤ 10 kg	≤ 10 kg
IP Rating	IP40	IP40
Operating Temperature	-25 ~ 55 ℃
Local & Remote Control — Local	WIFI / RJ45
Local & Remote Control — Remote	LTE Modem (optional)

Supported Frequency Bands

Reference coverage for the repeater platform. Output power range: 17–43 dBm.

Band	Downlink (Tx)	Uplink (Rx)	Output Power
VHF	136 – 174 MHz	136 – 174 MHz	17 – 43 dBm
UHF	450 – 512 MHz	450 – 512 MHz	17 – 43 dBm
N71: 600 MHz	617 – 652 MHz	663 – 698 MHz	17 – 43 dBm
N28: 700 MHz	758 – 803 MHz	703 – 748 MHz	17 – 43 dBm
N5: 850 MHz	869 – 894 MHz	824 – 849 MHz	17 – 43 dBm
N20: 800 MHz	791 – 821 MHz	832 – 862 MHz	17 – 43 dBm
N8: 900 MHz	925 – 960 MHz	880 – 915 MHz	17 – 43 dBm
N66: AWS	2110 – 2170 MHz	1710 – 1770 MHz	17 – 43 dBm
N3: 1800 MHz	1805 – 1880 MHz	1710 – 1785 MHz	17 – 43 dBm
N1: 2100 MHz	2110 – 2170 MHz	1920 – 1980 MHz	17 – 43 dBm
N40: 2300 MHz	2300 – 2400 MHz	2300 – 2400 MHz	17 – 43 dBm
N7: 2600 MHz	2620 – 2690 MHz	2500 – 2570 MHz	17 – 43 dBm
N41: TD2600+	2496 – 2690 MHz	2496 – 2690 MHz	17 – 43 dBm
N78: 3500 MHz	3300 – 3800 MHz	3300 – 3800 MHz	17 – 43 dBm
N77: 4000 MHz	3800 – 4200 MHz	3800 – 4200 MHz	17 – 43 dBm

Product Features

LCD display showing real-time input and output signal strength.
Automatic isolation detection for stable operation and reduced interference.
Capable of improving three mobile networks simultaneously.
Built-in Automatic Gain Control (AGC) and Automatic Level Control (ALC).
Center frequency movable for flexible deployment.
NMS Lite for remote or local control and monitoring (optional).

Product Applications

TETRA repeater deployment application scenarios for critical communications networks — TETRA repeater deployment scenarios for critical communications networks.

RF repeater application diagram showing signal coverage implementation — RF repeater application diagram illustrating signal coverage implementation.

About Our Company

Shenzhen A T N J Communication, located in Guangming District, Shenzhen, is a professional RF manufacturer with 16 years of experience, primarily engaged in R&D, production, manufacturing, sales, and technical services.

Our main products include Digital LTE/NR series repeaters, SDR core boards, passive devices, Digital DAS systems, and technical solutions for Public and Private (VHF, TETRA) network base stations, as well as wireless frequency modules.

Shenzhen A T N J Communication company location in Guangming District, Shenzhen — Shenzhen A T N J Communication — Guangming District, Shenzhen.

Shenzhen A T N J Communication manufacturing facility and production lines — Our manufacturing facility and production lines.

We undertake OEM and ODM services and projects for various RF equipment, wireless repeaters, multi-frequency DAS systems, remote network management center OAM, and equipment provision for indoor and outdoor signal coverage projects.

Our mature digital band-selective repeaters have been successfully deployed in overseas mobile operator markets. Our product field is expanding to include Public Safety and Low Altitude Economic Construction applications, featuring Public and Private Network Digital Multi-subband Repeaters, wireless signal repeaters, Integrated Base Stations, civil countermeasures, and phased array radar technology.

We have also realized Digital fiber multi-frequency, UHF, TETRA, VHF, and Microwave frequency shift repeaters. As technology progresses, we continue to develop easier-to-use, more functional, and intelligent RF products. We look forward to collaborating with you to create a brighter future together.

Ready to elevate your next project? Our R&D team is here to help you succeed. Get in touch today:

WhatsApp: +86 188 1358 2037