High Power Radio Frequency 37dBm Egsm Dcs LTE B20 Wide Band Signal Booster

• Type: Signal Repeater
• Transmission Medium: Cable
• Standard: Standard
• Lightning Protection: Contact Service
• Condition: New
• Power Supply: AC220 ±20%, 50/60Hz ±10%
• Model NO.: SRD-37LED
• Working Temperature: -20°c to +55 °c
• Connector Type: N-F
• Input Protection: Yes, Max Input<-10dBm
• Alc Control: ≥25 dB, Auto Shut off After 25 dB
• Output Powe: Dl:37±1dBm UL: 27±1dBm
• Operating Band: Wide Band
• Transport Package: Neutral Packing
• Specification: 500*468*226mm
• Trademark: RDsignal
• Origin: China
• HS Code: 8543709200
• Production Capacity: 2, 000PCS/Month

Product Description

High Power Radio Frequency 37dBm EGSM DCS LTE B20 Wide Band Signal Booster

Product Description

Summary

The repeater is a radio signal to signal enhancement in the wireless communication transmission in the process of transmitting transfer repeater device. It not only enlarged downlink signal but also enlarge the uplink signal. Widely used in local signal blind elimination influenced by many-storied buildings, alpine terrain, landform, terrain and produce or weak signal area. Through setting up a repeater can reduce the investment situation of base station coverage, improve the effect and range of the base station signal.

 Working Principle

The repeater is connected to a BS antenna, directed towards the base station, and to a MS antenna directed towards the area to be covered. These antennas are connected to the repeater with N type male connectors.
Our BDAs are controlled by powerful microprocessors. Alarm and operational LEDs are visible on the repeater front. The repeater works with convection cooling without fan.
Operational parameters such as gain, ower levels, etc. are set using a desktop or notebook and the OMT32, which communicate, locally or remotely via modem, with the repeater control unit (CU). Remote operation is performed using a telephone line or a built-in mobile phone equipped with a data interface.(option)

Downlink
The signal from the base station is received via the repeater BS antenna and is then the signal passes BS duplex filter (TPX), is amplified in a low noise amplifier (LNA), and enters the downlink channel boards (BSA), the signal first mixer stage on the BSA amplifier board, which is controlled by a synthesizer, converts the received frequency down to the IF frequency. The signal is then filtered by a SAW band-pass filter and, amplified before it is fed to the second mixer stage, controlled by the same synthesizer as the previous one, for converting back to the original frequency.
The output signal from the mixer is then amplified in the power amplifier and fed to MS duplex filter (TPX), and then it is fed to the repeater MS antenna.
Uplink
The signal from the Mobile phone is received via the repeater MS antenna and is then the signal passes MS duplex filter (TPX), is amplified in a low noise amplifier (LNA), and enters the uplink channel boards (BSA), the signal first mixer stage on the BSA amplifier board, which is controlled by a synthesizer, converts the received frequency down to the IF frequency. The signal is then filtered by a SAW band-pass filter and amplified before it is fed to the second mixer stage, controlled by the same synthesizer as the previous one, for converting back to the original frequency.
The output signal from the mixer is then amplified in the power amplifier and fed to BS duplex filter (BS-TPX), and then it is fed to the repeater BS antenna.
As shown:

Function Modules Introduce

1) RF Part
TPX: Duplexer, the receiving and transmitting signals are isolated; ensure that the receiver and transmitter can simultaneously work. It is composed of Six different frequency band-pass filter; avoid the local transmission signal transmitted to the receiving terminal.
LNA: Low Noise Amplifier Provide small signal low noise pre-amplification and input protection to prevent equipment damage caused by excessive signal.
BSA: Work Band Selection Filter Amplifier use VCO and PLL technology to provide superior frequency-selective filtering characteristics.
PA: Power Amplifier High linearity, high efficiency LDMOS devices to ensure that the device has enough power and good signal quality.
2) Detection Circuit and Control Circuit (The Main Control Module)
The main control module is used to configure the operating parameters of device, and detects operation status of the device automatically. The main control module uses RS485 bus technology to communicate with each RF module, and communicate to human-computer exchange interface with RS232 mode.
Function:
Adjust the gain of the uplink and downlink.
Set maximum output power of the uplink and downlink.
Detect operating temperature of the equipment.
Detect output power of uplink amplifier and downlink amplifier.
Detect input power of uplink and downlink.
Check the uplink LNA and downlink LNA for working properly
Check the uplink and downlink "Band selective filter" for working properly.
Check the uplink PA and downlink PA for working properly.
Switch on and switch off the power amplifiers of uplink and downlink.
Set the frequency of uplink signal channel and downlink signal channel.
Detect the VSWR of downlink output antenna port.
3) Power
It uses 220V AC power supply, through the built AC power supply, conversion to the desired +9 V, +28 V DC Voltage.
 

Technical Specificaitons

 

Electrical
Frequency -EGSM		Downlink: 925-960MHz	Uplink: 880-915MHz
Frequency -DCS&LTE		Downlink :1805-1880MHz	Uplink :1710-1785MHz
Frequency -B20		Downlink:  791-821MHz	Uplink: 832-862 MHz
Operating band		Wide Band
Output power		DL:37±1dBm	UL: 27±1dBm
Gain		90/85dB±3
Gain adjustable range		1-30dB
Passband ripple		≤4dB
Noise figure		<=6 dB ≤6 d B
EVM		≤ 12.5%
Peak Code Domain Error		≤ -35dB@Spreading Factor 256
ACPR		≥ 40dBc/30KHz @ ± 5MHz
Spurious	9KHz-1GHz	≤-30dBc
	1GHz-12.7GHz	≤-36dBc
ALC control		≥25 dB, auto shut off after 25 dB
Impendence		50Ω
Input protection		YES, max input<-10dBm
Environmental & Mechanical
Demission		500*468*226mm
Weight		35KG
Power supply		AC220 ±20%, 50/60Hz ±10%
Connector type		N-F
Working temperature		-20°C to +55 °C

 

Interface Description:

RF connector: BTS port connect donor antenna (near the base station side) , BTS-30dB port is monitor port is BTS port Minus 30dB; MS port connect retransmission antenna (Near the coverage area), MS -30dB port is monitor port is MS port Minus 30dB;
AC PWR: 220VAC. AC POWER
Fixed Tripod: For fixing the equipment on a wall or a holding pole.
Grounding Solder Lug: GND location of equipment grounding.
Indicator light:
PWR: Blue, normally on, when the power is off or power failure, the light goes out.
RUN: Blue, flashing green when the equipment is in normal operation;
Alarm:Red, If the equipment is faulty, the light will be on, otherwise it will be off
Note: That the above indicators are on the monitoring motherboard

Installation Instructions

Project Preparation

Site Survey

Before you install, the installer should contact the person responsible for the project, understand whether there are installed conditions in the installation site.
Specifically include: Installation site, surroundings (Temperature and Humidity), power supply, Source case and so on. If qualified, should go live on-site survey with related personnel. The repeater is designed that can working outdoors, operating temperature is -20ºC~60ºC, humidity is ≤95%, which can be adapted to most areas of the natural environment.
Shall meet the following basic requirements before installation:

1. That power is available.
2. Proper grounding nearby.
3. For cable connection.
4. Local source signal strength> -80dBm. Preferably> -65dBm.

Recommended Environmental Requirements:
1.Installation area non-corrosive gases and fumes, Electromagnetic interference field strength ≤140dBμV/m(0.01MHz~110000MHz).
2.Mounting height should facilitate the RF cable routing, cooling, safety and maintenance.
3.Should provide a set of independent and stable 176VAC~260VAC(Nominal 220V/50Hz)AC Power. It must not be shared with other high-power appliances telecommunications equipment.
4.Lightning protection devices must be installed in the building, and it should have sufficient strength and stability.
5.There are grounding bar in the vicinity.

 Installation Tools

Installation tool to use: Electric impact drill, iron hammer, pulleys, ropes, belts, helmets, ladders, screwdriver, hacksaw, knife, pliers, wrenches, compass, measuring tape, tweezers, electric iron, portable PC, 30dB directional coupler, spectrum analyzers, VSWR tester.

System Installation

repeater Installation
It can be holding pole or wall mounting way. It should be installed in ventilated place, vertically on a wall, the upper part of the equipment to be considered more than 50cm from the ceiling, the lower part of the equipment needs more than 100cm from the floor.

repeater outline dimension drawing

 

Dimension drawing of mounting bracket

Wall-Way Mounting Sketch Map

 

Antenna and Feeder Installation and Precautions

1.Installation of antenna systems requires experienced professionals to complete.
2.You can not install an antenna near power lines, which may be life-threatening.
3.All exposed joints must use self-adhesive waterproof tape and electrical insulation tape seal securely.
4. Preferably port device BS antenna gain is greater than 12dBi, cable length between the BS ports and donnor antenna is preferably not more than 30 meters, cable length between the MS ports and Retransmission antenna is preferably not more than 50 meters, Feeder's  specifications better than 1/2 inch.

Connect the Ground and Power Supply

Equipment Grounding
repeater equipment must be well grounded, there is a copper on the repeater wall chassis ground, use 2mm² or thicker copper wire close to the ground. Grounding wire should be as short as possible. When installed, the equipment grounding wire should be connect to the integrated grounding bar. Grounding resistance of requirements bar may be≤ 5Ω, ground connector require preservative treatment.
Connect the Power
Connect 220V/50Hz AC power to the equipment power port terminal blocks, power line use 2mm² cables, length less than 30m. For standby power requirement, the power must go through UPS, and then connect the UPS to the repeater power port terminal blocks.
Pay Attention 1: For personal safety, when the equipment is connected to 220VAC, please disconnect external switch firstly, strictly prohibited conducted operations in thunderstorms.
Pay Attention 2: By the repeater panel Tags, connect the RF cable and power lines, and connect the outer casing of repeater to the Earth. MS port connect to the Retransmission antenna, BS port connect to the donor antenna, Seal the RF cable connector, prevent leakage caused rusting connector, VSWR deteriorates and adverse effects. Before power-on, pay attention to see if objects have fallen into the repeater.

System Commissioning

 Measure VSWR of Antenna Feeder System

Measuring Donor Antenna VSWR
(1) Disconnect the equipment and feeder connections.
(2) The VSWR tester connects to the lower end of the donor feeder.
(3) Set the VSWR tester frequency range to 1920 ~2170MHz and 2500-2690MHz.
(4) The curve shows the SWR curve of donor antenna.
Measuring Transponder Antenna VSWR
Measurement method is same as donor antenna VSWR measurement method. If the maximum value of the donor antenna feeder system VSWR Curve and transponder antenna system VSWR Curve is less than 1.5, then it meets the requirements. Otherwise, check the connection of each joint until the desired.
Note:VSWR can also be tested by PC software, detailed operation, see <Software Operating Instructions section>

Measuring AC Input Voltage

AC input voltage is measured with a multi-meter, the measurement should be between 200VAC.~ 240VAC.

 Measuring Downlink Output Power

The measurement method is as follows:
1. Disconnect the equipment from transfer feeder line.
2. Connect the 30dB directional coupler, coupling port connect to the spectrum analyzer, Coupler input port connect to the transmission port of equipment, coupler output port connect to transfer feeder line.
3. Set the downlink gain of the equipment as a maximum value, setup the spectrum analyzer to channel power mode, set the center frequency to the emission frequency of base station, and then measure the power.
4. Downlink output power should be consistent with requirements of the nominal value.
Note: If there is no spectrum analyzer, power meter can be used to measure, refer to power meters manual for measurement method.

Also, if there is no power meter, you can connect all the antenna feeder system, open the cover of the equipment and then read by software, but also accurate.

 

Call Test

1. Different positions in the main coverage area, you use a test phone take a call and talking, check the talking, to check the call and talking.
2. Each position for 5 times or more calls.
If the test result is not satisfactory coverage, you can re-adjust the horizontal angle, pitch angle of retransmission antenna and repeater Gain, and achieve the repeater ideal coverage.

Adjust the Gain of Uplink and Downlink

Uplink and downlink gain of the equipment can be adjusted independently. According to the downlink output power and call the testing situation, can adjust the gain of the uplink and downlink in order to achieve the desired effect of the repeater.
When the talk test intermittent, increase uplink gain; when large call noise, reduce downlink gain.
If the downlink input signal power is too large and cause the output power is too large, can reduce the downlink gain(increase downlink ATT) ; If the downlink input signal is too small and resulting in output power is insufficient, can increase the downlink gain(reduce downlink ATT).
Adjustment range: 1-31dB.
Gain adjustment method: (See operating instructions of monitoring software)

 

Shenzhen RDSignal Technology Co., Limited is one of the leading suppliers which specializes in designing and manufacturing RF Jamming Equipment and Wireless Coverage Products.

RF Jamming Equipment include Cell Phone Signal Jammer and RF Communication Jammer(20-6000MHz).

RDSignal Technology Co.,Ltd. is the foremost innovator in the field of RF jamming, offering a comprehensive range of jamming equipment and systems which have a proven record of reliability and performance in all types of applications and environmental conditions.

Such as, Drone jammer, UAV jammer, High power bomb jamming devices, IED jammers, Digital programable jammer, VIP Convoy Bomb Jammers (RCIED Jammers), Mobile Phone Signal Jammers, Prison Jammers, Portable Jammers, Handheld Jammers, to suit all types counter terrorism activities.

RDSignal products have been exported to more than 60 countries and regions around the world. Such as Southeast Asia, Africa, Europe, South America and the Middle East.

Let us hand in hand and create a glorious cause!

Exhibitions

 

FAQ

Q1. Could I get a sample before bulk order?

Yes, we offer the sample for all models but charged.

Q2. What should I do if I don't know about frequency in my country?

Please feel free to contact us with your inquiry, we will find the frequency you need and address your problems.

Q3. Do you accept OEM/ODM order?

Yes, we can customize the brand logo, colors, and frequencies.

Q4.Shipment Date

Sample	3-5 business days
<20 pcs="">	7-15 days
20-50 pcs	15-24 days
>50 pcs	Negotiate

<20 pcs="">Q5: Delivery Date of the sample by DHL/FedEx

USA/Canada/Europe/Asia	3-5 days
Middle East/Latin American	5-7 days
African	3-7 days

Q6.Payment Method

T/T, Western Union, Paypal, and Credit Card are available,
but we suggest paying by Alibaba Trade Assurance, the most favor, and security method.
*Other methods please contact us with more details.