Quad Band Line Amp

With MGC -20dBm

Product Overview

This JDTECK Quad Band Band Line Amplifier was designed specifically to provide a boost in signal downstream of a cellular repeater on a DAS in order to extend in-building coverage where signal may drop off due to long coaxial runs.  It is designed to be installed after a repeater, not before as it has DL output but 0dB UL power. It also has gain in both directions.  It features alarm monitoring LED's to indicate error detection in the respective frequency band.  

Also built into this line amp are DIP switches that manually attenuate the gain of the respective frequency band. This is especially convenient when you only need to attenuate one or two frequencies while others need to be left at full gain. 

A test report is included with each line amp so you are assured of quality standards. 

  • Extend In-Building Coverage Economically
  • Full Duplex Gain (20dB)
  • Alarm Monitoring LED's for Error Detection
  • Manual Gain Control for Each Band
  • Meets ETSI & 3GPP / 3GPP2 Standards
  • Supports Quad Band Frequencies- USA
  • Provides DL Output Power Only (0dB on the UL)
  • 36 Months Warranty
  • Supports 90-265 Volt Input
  • Light-Weight
  • Attractive Design


Quad Band Line Amp - 700 / 800 / 1900 / 1721

Frequency Chart

Model Uplink Downlink
LA-LCPA-NF-20 700 A+B 698 ~ 716 MHz 728 ~ 746 MHz
700 C 776 ~ 787 MHz 746 ~ 757 MHz
800 824 ~ 849 MHz 869 ~ 894 MHz
1900 1850 ~ 1910 MHz 1930 ~ 1995 MHz
1721 1710 ~ 1780 MHz 2110 ~ 2180 MHz
Max.Gain ≧20dB
Output Power ≥0dBm ≥20dBm
Automatic Level Control ≥10dB 
Gain Flatness GSM & CDMA Tpy≤ 8dB (p-p); DCS,PCS≤ 10dB (p-p)
WCDMA ≤ 2dB/ 3.84MHz,Full Band≤ 8dB (p-p)
Spurious Emission & Output inter-modulation  GSM Meet ETSI TS 151 026 V 6.1.0
 WCDMA Meet 3GPP TS 25.143 ( V 6.2.0 )
CDMA Meet IS95 & CDMA2000
WCDMA System Spurious Emission Mask Meet 3GPP TS 25.143 ( V 6.2.0 )
Modulation Accuracy ≤ 12.5%
Peak Code Domain Error -35dB@Spreading Factor 256
Noise Figure ≦ 6dB
CDMA System Rho ρ > 0.980
ACPR Meet IS95 & CDMA2000
 Group Delay ≦0.5μs
 VSWR  ≦3
Frequency Stability ≤ 0.01ppm

Mechanical Specifications

 I /O Port  N Female
 Impedance  50 ohm
 Operating Temperature  -25 ºC ~+55 ºC
 Environment Conditions  IP40
 Dimensions 250x165x53mm
 Weight  ≤0.7Kg
 Power Supply  Input AC90~264V,output DC9V / 3A
 LED Alarm  Standard
 Power LED  Power indicator
 ALC LED  Orange @ ALC 10dB
30 Day Money Back

36 Month Warranty
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