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20dBm 70dB GSM 900MHz Band Selective Cellular Amplifier

Basic Info

Model No.:  ET-BRG20S-F

Product Description

Model NO.: ET-BRG20S-F

Transmission Medium: Cable

Lightning Protection: With Lightning Protection

Condition: New

Weight: 3.5kg

Gain: 70dB

Origin: China

Type: Signal Repeater

Standard: Standard

Certification: ISO, RoHS, CE

Band: GSM/Lte

Output Power: 20dBm

Specification: 270*190*55

HS Code: 8517611010

20dBm 70dB GSM 900MHz Band Selective Cellular Amplifier

This model can automatically control the gain and digital display current Gain, also can manual adjust the Gain

20dBm 70dB GSM 900MHz Band Selective Cellular Amplifier


ET-BSG20S-F model can support GSM Band selective system. The bandwidth can be customized in the frequency range.


1. Elegant and Compact design

2. Built-in AGC and ALC circuits, which can automatically control the gain of the repeater depending upon the strength of input signals.

3.31dB MGC(Manual gain control) 1dB one step available for both uplink and downlink to adjust the gain value for proper coverage during installation or maintenance.

4. Auto shut off function available for both uplink and downlink to avoid deep self-oscillations from jamming the towers, saving your trouble from operators.

5. Low power consumption.

RF Repeater Typical Application

20dBm 70dB GSM 900MHz Band Selective Cellular Amplifier

Product specification

Electrical specification Uplink Downlink
Frequency Range GSM900 890~900MHz 935~945 MHz Can be customized
Passband Ripple GSM/DCS ≤2dB
WCDMA ≤2dB/3.84MHz
Max .Gain ≥65dB ≥70dB
Out of Band Gain (GSM,DCS) ±600KHz ≤ 40dB ≤ 40dB
±1MHz ≤ 35dB ≤ 35dB
±1MHz ≤ 35dB ≤ 35dB
±5KHz ≤ 25dB ≤ 25dB
MGC(Step Attenuation) 31dB / 1dB step
Automatic Level Control ≥ 30dB
Max .Output Power ≥13dBm ≥20dBm
Input Power -30dBm(Max) : Operating -30dBm(Max) : Operating
0dBm(Max) : Absolute 0dBm(Max) : Absolute
Noise Figure ≤ 8dB
Intermodulation (GSM,DCS) 9KHz~1GHz ≤ -36dBm ≤ -20dBm
1GHz~12.75GHz ≤ -30dBm ≤ -20dBm
Spurious Emission 9KHz~1GHz ≤ -36dBm ≤ -36dBm
1GHz~12.75GHz ≤ -30dBm ≤ -30dBm
V.S.W.R ≤ 1.5
Group Delay ≤ 5μs
Frequency stability ≤ 0.01ppm
Power Consumption ≤10WATT
Cooling Heatsink Convection cooling
MTBF 100,000 Hrs
RF Character Comply with ETSI EN 300 609 -4
EMC Comply with ETS 301 489 - 1
Saftey Comply with EN 60 950
LED Alarm Standard
Power LED Green @ Normal work
ALC LED Red @ ALC 1dB~31dB
Mechanical Specifications Standard
I /O Port N--Female
Impedance 50 ohm
Operating Temperature -10ºC~+40ºC
Environment Conditions IP40
Dimensions 270*190*55mm
Weight ≤ 4KG
Power Supply Input AC90~264V,output DC9V / 5A


1). Q: Does OEM & ODM order available?

A: Yes, customer's Logo or design is available;

2). Q: What is the product warranty?

A: One year warranty offered for ETENDA products.

3). Q: How long can I get the products?

A: Normally 10-15 days for production, depends on order quantity.

4). Q: What is the delivery method?

A: Multiple delivery method for selection, by air, land, sea or expression courier.

5). Q: What type of system can you support?

A: System like GSM / CDMA / DCS / WCDMA / TETRA / LTE Wireless Full Band Repeater, Fiber Optic Repeater, Frequency Shifting Repeater, Digital / Analog Repeater, Trunk Amplifier

6). Q: What 's output power can you support?

A: indoor models can support 10/15/20/23/27/30dbm

outdoor models can support 33/37/40/43 dbm

Contact us if you need more details on Cellular Amplifier. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Amplifier、Repeaters 900. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Band Selective Repeater

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