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37~40 dBm Line Amplifier
37~40 dBm Line Amplifier
  • 37~40 dBm Line Amplifier
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37~40 dBm Line Amplifier

Product Feature:


* Dust-proof chassis, prolong equipment lifetime.

* Work with indoor repeaters to expand coverage.

* Reduce cellphone transmit power and radiation, extend cellphone battery life.

* Coverage up to 10000~50000 m².

* Low UL noise design, improve repeater sensitivity, keep communication quality.

     Line amplifiers are actually applied as linear amplifier, it is used as the indoor coverage solution and must worked with mobile signal repeater. It amplifies transmitting RF signal in order to compensate signal loss by excessive cable or components. 
    It is composed by two independent links: Uplink (or Forward Link) and Down Link (or Reverse Link). Downlink receives donor signals from BTS or Repeaters and amplify the donor signals; Uplink receives and amplifies signals from MS, in order to improve indoor coverage extension
    Amplifier enhances consumer satisfaction greatly with its integrated design, compact size, easy engineering and rapid installation and debugging


Standard package 

1) AC power cable (EU standard/ US standard/UK standard/ SA standard/China standard, etc) 1PCS 

2) Installation kit 1PCS 

3) User manual 1PCS

Model frequency

ModelFrequency rangeUplinkDownlink
L37/ L40EGSM/ LTE 8880-915MHz925-960MHz
GSM890-915MHz935-960MHz
DCS/ LTE 31710-1785MHz1805-1880MHz
PCS/ LTE 21850-1910MHz1930-1990MHz
CDMA/ LTE 5824-849MHz869-894MHz
WCDMA/ LTE 11920-1980MHz2110-2170MHz
IDEN806-824MHz851-869MHz
AWS/ LTE 41710~1755MHz2110~2155MHz



Electrical Specification

ItemsUplinkDownlink
Frequency RangeCDMA800 &GSM850824 ~ 849 MHz869 ~ 894 MHz
GSM900890 ~ 915MHz935 ~ 960 MHz
DCS1710 ~ 1785 MHz1805 ~ 1880 MHz
PCS1850 ~ 1910 MHz1930 ~ 1990 MHz
WCDMA1920 ~ 1980 MHz2110 ~ 2170 MHz
Max.Gain≧35dB≧40dB
Manual Gain Control31dB in step of 1dB
Automatic Gain Control>20dB
BandwidthWide Band
Ripple in Band±2dB
Max. Input Power Without Damage0dBm10dBm
Output Power≧0dBm≧33dBm
Intermodulation Products9KHz~1GHz≦ -36dBm≦ 37-45dBm
1GHz~12.75GHz≦ -30dBm≦ -45dBm
Spurious Emission9KHz~1GHz≦ -36dBm≦ -36dBm
1GHz~12.75GHz≦ -30dBm≦ -30dBm
Spurious Emission Mask( WCDMA )Complies with 3GPP TS 25.106
Modulation Accuracy( WCDMA )Complies with 3GPP TS 25.106
Peak Code Domain Error( WCDMA )Complies with 3GPP TS 25.106
ACRR( WCDMA )≥30dB @ ±5MHz &±10MHz
Noise Figure @ max. gain≦5dB(Typical)
Return loss≦-14dB
Time Delay≦0.5μs
MTBF> 50000hours
Power SupplyAC:90~265V, 50/ 60Hz
Power Consumption<150W
Impedance50 ohm
Input Signal Levels-60dBm or more-15dBm to -5dBm
LED indicationPower LEDDC ON/OFF
Alarm LEDNormal :Green ; Any Alarm Happen: Red
Remote/ Local ControlLocal:Via RS232 ; Remote:Via wireless Modem



Mechanical Specification

RF ConnectorN-Female
SwitchPower Switch
CoolingHeatsink Convection cooling
Dimensions (D x W xH )340 * 450 * 175 (mm)
Weight< 15 Kg
Installation TypeWall Installation(or Pole Mount)
Environment ConditionsIP55
Humidity< 90%
Operating Temperature-10℃ ~ 55℃


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