Tower mounted amplifier is an effective product that can improve the uplink signal of the base station. It is composed of a balanceable low noise amplifier and a bypass switch. TMA, installed on the top of the tower, is put under the antenna that can enhance the uplink power, decrease the noise coefficient and improve the sensitivity of the receiving system. The machine can switch automatically to bypass equipment when the machine is out of power or goes wrong. This is protection of the station and the base station will work normally in this way. The independent power supply unit of TMA will go through bias T joint and RF cable, and the machine has low noise coefficient, good lighting proof and waterproof functions.
1) Receiving feature:
* Working frequency: 890 - 915 MHz 1710 - 1785 MHz 825 - 840 MHz
* Receiving gain: 12 dB 12 dB 12 dB
* Typical noise coefficient: < 1.6 dB < 1.4 dB < 1.6 dB
* Bypass receiving loss: < 1.6 dB < 1.8 dB < 1.7 dB
* Port VSWR: ≤1.3 ≤1.3 ≤1.3
* Input IP3: > 10 dBm > 10 dBm > 10 dBm
2) Transmitting feature:
* Working frequency: 935 - 960 MHz 1805 - 1880 MHz 870 - 885 MHz
* Emission ion loss: < 0.5 dB < 0.5 dB < 0.6 dB
* Port VSWR: ≤1.3 ≤1.3 ≤1.3
* Maximum power: 200 W 200 W 200 W
3) System feature:
* Receiving / transmitting isolation: ＞75dB ＞75dB ＞75dB
* Inter-modulation: -110 dBm -110 dBm -110 dBm
4) Environment feature:
* RF joint: 7 / 16 DIN 7 / 16 DIN 7 / 16 DIN
* Temperature: -40℃ ～ +65℃ -40℃ ～ +65℃ -40℃ ～ +65℃
* Humidity: 5 - 95％ 5 - 95％ 5 - 95％
* Shell protection: IP68 IP68 IP68
* Lighting protection: IEC-1312-1 IEC-1312-1 IEC-801-5
* Electromagnetic compatibility: ETS300 343-3 ETS300 343-3 ETS300 343-3
* MTBF: 1000000 hours 1000000 hours 1000000 hours
* Power supply: DC-48V / +24V DC-48V / +24V DC-48V / +24V
* Weight: 5 Kg 5 Kg 5 Kg
| Place of Origin: | China| |
| Model No: | ZKTMA-1 |
| Package: | in wooden cases |