450MHz Signal Boosters SMS Remote Monitoring Channel Selective
TETRA Repeater
GREETWIN 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.
Signal Booster Main Features
◇ High linearity PA; High system gain；
◇ Support multi operators' network simultaneously
◇ Intelligent ALC technology；
◇ Full duplex and high isolation from uplink to downlink；
◇ Automatic Operation convenient operation；
◇ Integrated technique with reliable performance;
◇ Local and remote monitoring (optional) with automatic fault alarm
&remote control;
◇ Weatherproof design for all-weather installation;
Signal Booster Applications
To expand signal coverage of fill signal blind area where signal is
weak or unavailable.
Outdoor: Airports, Tourism Regions, Golf Courses, Tunnels,
Factories, Mining Districts, Villages etc.
Indoor: Hotels, Exhibition Centers, Basements, Shopping Malls,
Offices, Packing Lots etc.
It is mainly applicable to such case:
The repeater can find an installation place which can receive pure
BTS signal at strong enough level as the Rx Level in repeater site
should be more than ‐75dBm;
And can meet the requirement of antenna isolation to avoid
self‐oscillation.
Signal Booster Technical Specifications:
| Uplink | Downlink |
| Working Frequency (customizable) | 450-455MHz | 460-465MHz |
| Channel Filter Signal Bandwidth | 12.5KHz |
| Number of Sub-Channels | 8 Channels.
Such as,
DL: 460.9125MHz and 461.1125MHz
UL: 450.9125MHz and 451.1125MHz |
|
|
|
| Max. Input Level (Non-Destructive) | -10dBm |
| Max. Output Power (customizable) | 33dBm |
| Max. Gain | 85dB±2 |
| Gain Adjustment Range | 1~31dB @ step of 1dB |
| Auto Level Control (ALC) | >30dB |
| Voltage Standing Wave Ratio (VSWR) | ≤ 1.5 |
| Noise Figure | ≤ 5dB |
| In-Band Ripple | ≤ 3dB |
| EVM(%) | ≤5 |
| Third-Order Intermodulation | ≤ -45dBc |
| System Delay | ≤ 20μSec |
| I/O Impedance | 50Ω |
| RF Connector | N-Type (Female) / changeable / bottom of casing |
| Temperature Range | Operation: -25°C ~ +55°C / Storage: -30°C ~ +60°C |
| Relative Humidity Range | ≤ 95% (non condensing) |
| Power Supply (customizable) | DC 28V / AC 220V, 50/60Hz |
| Power Consumption | ≤300W |
| Backup Power Supply (optional) | 4 hours |
| Casing Level | IP65 |
| Dimensions | 447x357x80mm |
| Weight | ≤ 15kg |
When you choose the channel number.
Please note,
460 + (N * 0.0125) = 460.9125MHz,
N is channel number. N = 73
460 + (N * 0.0125) = 461.1125MHz,
N is channel number. N = 89
