Bi-Directional Tower Mount Booster (TMB)
MODEL:
TMB862 (GSM 900MHz) / TMB882 (GSM 1800MHz) / TMB892 (GSM 1900MHz) /
TMB912 (CDMA 450MHz) / TMB932 (CDMA 800MHz) / TMB992 (CDMA 1900MHz) /
TMB652 (WCDMA)
The Bi-Directional Tower Mount Booster (TMB) is designed to amplify both the uplink and downlink signal to expand the coverage range of BTS.
It can simultaneously enhance the receiving sensitivity of uplink and downlink to reduce the weak/blind area among the coverage of BTS cell edge and indoor coverage, and help the BTS absorb more traffic and improve the call quality.
It is installed on the top of telecommunication tower and below the BTS antenna. In comparison to the BTS Power Booster, it has lower loss through RF cables.
See the overview of Signal Booster here.
Application Diagram of Bi-Directional Tower Mount Booster
Features
Application
Specifications
Features
- Continuous tunable gain of uplink and downlink to meet different coverage requirements;
- High reliability and stability;
- Low noise figure;
- Automatic bypass system with alarm is offered to ensure continued operation of BTS when TMB has errors, power supply failure or signal surge;
- Provided with alarms for overpower of uplink & downlink and over-temperature of TMB;
- Aluminum-alloy casing has high resistance to dust, water and corroding;
- Provided with protection against lightning surge.
Application
- To expand the BTS coverage in plain area around the BTS and improve the balance between uplink and downlink.
Specifications
| Uplink | Downlink | |
|---|---|---|
| Working Frequency (customizable) | GSM900: 890~915MHz / GSM1800: 1710~1785MHz / GSM1900: 1895~1910MHz / CDMA450: 450~457.5 MHz / CDMA800: 824~849MHz / CDMA1900: 1880~1890MHz / WCDMA: 1920~1980MHz |
GSM900: 935~960MHz / GSM1800: 1805~1880MHz / GSM1900: 1975~1990MHz / CDMA450: 460~467.5 MHz / CDMA800: 869~894MHz / CDMA1900: 1960~1970MHz / WCDMA: 2110~2170MHz |
| Gain | 12±2 dB | |
| Gain Adjustment Range | 7±1 dB | |
| Output Power (customizable) | ≥ 10dBm | 45~52 dBm (32~160 W) |
| In-Band Ripple | ≤ 2.5dB (p-p) | |
| Frequency Error | -- | ≤ 40Hz |
| Voltage Standing Wave Ratio (VSWR) | ≤ 1.5 | |
| Noise Figure | ≤ 3dB | -- |
| Bypass Insertion Loss | ≤ 2dB | |
| Intermodulation Attenuation | -- | ≤ -70dBc |
| Spurious Emission | ≤ -36dBm @9kHz~1GHz ≤ -30dBm @1GHz~12.75GHz |
|
| I/O Impedance | 50 Ω | |
| Resistance against Mismatching Load | 10:1 | |
| I/O Connector | DIN-Type (female) or N-Type (female) | |
| Temperature Range | Operation: -40°C ~ +55°C | |
| Relative Humidity Range | ≤ 95% (non condensing) | |
| Casing Level | IP65 | |
| Power Supply | DC -48V | |
| Dimensions | 630mm X 400mm X 230mm | |
| Weight | 35kg | |
| Remote Monitoring/Control via NMS | Supported | |