GOBOOST GB3 Mobile Signal Repeater User Manual

GOBOOST GB3 Mobile Signal Repeater

Product parameters

model

• GB.3.CPA.4

Network

• CDMA、LTE-B25、LTE-B66

parameter

Frequency Range

| Frequency| Uplink| Downlink
---|---|---|---
CDMA| 824~849| 869~894
LTE-B25| 1850~1915| 1930~1995
LTE-B66| 1710~1780| 2110~2200
| |
| |
Output Power| 15±2 dBm| 20±2 dBm
Gain| 53±3 dB| 65±3 dB
Bandwidth| 25M+65M+70M
---|---
Ripple in Band| CDMA≤6dB;LTE-B25≤6dB;LTE-B66≤6dB
Spurious Emission| 9KHz~1GHz| ≤ -36 dBm
1GHz~12.75GHz| ≤ -30 dBm
Intermodulation Products| 9KHz~1GHz| ≤ -36 dBm
1GHz~12.75GHz| ≤ -30 dBm
VSWR| ≤3
MTBF| ＞50000 hours
Power Supply| AC：100~240V, 50/ 60Hz；DC：12V 2A
Power Consumption| < 5.5W
Impedance| 50 ohm

Mechanical Specification

Product display

Installation steps

• Step 1: Install the outdoor antenna on the roof or other positions where you can receive 4 bars of signal or more.
• Step 2: Connect the outdoor antenna to the BTS port via the cable and tighten the connectors at both ends, making the outdoor antenna point to the base station.
• Step 3: Connect the indoor antenna to the MS port, and place the indoor antenna at a higher position to increase signal coverage.
• Step 4: After connecting and tightening the two antennas, plug in the power supply and check the condition of the signal display light.
• Step 5: Check whether the phone signal has been improved or not. If it is not ideal, you can adjust the height or direction of the outdoor antenna. A good outdoor signal is half of the success.
• Attention: There must be a solid wall between the indoor antenna and the outdoor antenna to prevent self-oscillation.

installation drawing

Application Scenario

frequently asked question

After the installation, the signal improvement is not significant, and the indoor coverage area is small

| 1. Adjust the position and direction of the outdoor antenna

2. Check if the cable is properly connected

3. Raise the outdoor antenna so that it can receive better signals

4. Replace high-power amplifier

5. Replace a high-gain outdoor antenna

The phone signal is full, but the call quality is poor| The distance between outdoor and indoor antennas is too close, so it is

necessary to increase the distance between them, or increase barrier isolation between them

After installation,

the signal did not improve, but it was worse

| The distance between outdoor and indoor antennas is too close, so it is

necessary to increase the distance between them, or increase barrier isolation between them

I have been using it normally before, but suddenly the signal is not good after using it for some time

| 1.   Check if water ingress at outdoor cable joints

2.   Check if the power indicator light is normal

3.   If there is no water ingress into the cable and the power indicator light is normal, it is possible that the amplifier has malfunctioned and needs to be returned to the factory for repair

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