iDEN/TETRA 800MHz +27dBm Off-air BDA (Bi–Directional Amplifier) is an RF signal booster used to improve radio communications in situations where radio signal.
Kingtone Repeaters system is designed to solve problems of weak mobile signal, which is much cheaper than adding a new Base Station (BTS). Main operation of RF Repeaters system is to receive low‐ power signal from BTS via radio frequency transmission and then transmit the amplified signal to the areas where network coverage is inadequate. And the mobile signal is also amplified and transmitted to the BTS via the opposite direction.
Main Features
1，High linearity PA; High system gain；
2，Intelligent ALC technology；
3，Full duplex and high isolation from uplink to downlink；
4， Automatic Operation convenient operation；
5，Integrated technique with reliable performance;
6， Local and remote monitoring (optional) with automatic fault alarm &remote control;
7， Weatherproof design for all‐weather installation;
Technical Specifications
| Items | Testing Condition | Specification | Meno | ||
| Uplink | Downlink | ||||
| Working Frequency(MHz) | Nominal Frequency | 806 – 821MHz | 851 ‐ 866MHz | Full band or sub band | |
| Bandwidth | Nominal Band | 15MHz | Can be configured in work band | ||
| Gain(dB) | Nominal Output Power‐5dB | 70±3 | 75±3 | ||
| Output Power (dBm) | GSM modulating signal | +20± 1 | +27± 1 | ||
| ALC (dBm) | Input Signal add 20dB | △Po≤±1 | |||
| Noise Figure (dB) | Working in‐ band (Max. Gain) | ≤5 | |||
| Ripple in‐ band (dB) | Nominal Output Power ‐5dB | ≤3 | |||
| Frequency Tolerance (ppm) | Nominal Output Power | ≤0.05 | |||
| Time Delay (us) | Working in‐ band | ≤5 | |||
| Gain Adjustment Step (dB) | Nominal Output Power ‐5dB | 1dB | |||
| Gain Adjustment Range(dB) | Nominal Output Power ‐5dB | ≥30 | |||
| Gain Adjustable Linear(dB) | 10dB | Nominal Output Power ‐5dB | ± 1.0 | ||
| 20dB | Nominal Output Power ‐5dB | ± 1.0 | |||
| 30dB | Nominal Output Power ‐5dB | ± 1.5 | |||
| Inter‐ modulation Attenuation(dBc) | Working in‐ band | ≤‐45 | |||
| SpuriousEmission(dBm) | 9kHz‐ 1GHz | BW:30KHz | ≤‐36 | ≤‐36 | |
| 1GHz‐ 12.75GHz | BW:30KHz | ≤‐30 | ≤‐30 | ||
| VSWR | BS/MS Port | 1.5 | |||
| I/O Port | N‐ Female | ||||
| Impedance | 50ohm | ||||
| Operating Temperature | ‐ 25°C ~+55°C | ||||
| Relative Humidity | Max. 95% | ||||
| MTBF | Min. 100000 hours | ||||
