Active Member
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[China]
Contact name:Albert
Shenzhen Greetwin Technology Co.,Limited |
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Shift CDMA Signal Repeater 43dBm 800MHz 20W Frequency with Cable Access
The Frequency Shift Repeater (FSR) is designed to solve problems of
weak mobile signal, which can expand more coverage than RF repeater
and reduce investment for the areas where fiber optic cable is not
available.
The whole FSR system consists of two parts: Donor Unit and Remote
Unit. They transparently convey and amplify the wireless signal
between the BTS (Base Transceiver Station) and mobiles via RF wave
at different frequency from the BTS.
The Donor unit receives the BTS signal via a direct coupler closed
to the BTS (or via open air RF transmission through the Donor
Antenna), then converts it from the working frequency to the link
frequency, and transmits the amplified signal to the Remote Unit
via the Link Antennas. The Remote Unit will reconvert the signal to
the working frequency and provide the signal to the areas where
network coverage is inadequate. And the mobile signal is also
amplified and retransmitted to the BTS via the opposite direction.
As per the method of receiving BTS signal by the Donor Unit, two
types of FSR are available:
1. Cable-Access FSR: To receive BTS signal via a direct
coupler closed to the BTS (recommended);
2. Wireless-Access FSR: To receive BTS signal via a Donor Antenna
(applicable when no line of sight can be viewed between the Donor
Unit and the Remote Unit as the Donor Unit is installed on the BTS
tower).
And both types of FSR can be sorted into 2 sub-categories as per
the availability of link frequency:
1. In-Band FSR: The link frequency is within the working band of
BTS;
2. Out-of-Band FSR: The link frequency is out of the working band
of BTS.
The FSR is mainly applicable to such case:
The area to be covered is far away from the BTS and has no fiber
optic connection;
The distance between the BTS and the area to be covered is 20 km
around.
In comparison with RFR (RF repeater) and FOR (fiber optic
repeater), the FSR has the following benefits and disadvantages:
In comparison with RFR (RF repeater) and FSR (frequency shift
repeater), the FOR has the following advantages and disadvantages:
Advantages:
· No more self-oscillation and easy to choose installation
location;
· For Cable-Access type, pure BTS signal picked up by the Donor
Unit will greatly reduce the signal noise;
· The Remote Unit can be installed out of the BTS coverage;
· A full 360-degree coverage can be realized;
20W Frequency Shift Repeater Disadvantages:
· The total cost of equipment is higher;
· A certain frequency resource is required to be occupied as the
Link Frequency;
A line of sight shall be viewable between the Link Antennas.
20W Frequency Shift Repeater Application:
To expand signal coverage or fill signal blind area where signal is
weak or unavailable.
· Outdoor: Airports, tourism regions, golf courses, tunnels,
factories, mining districts, villages, highways
· Indoor: Hotels, exhibition centers, basements, shopping malls,
offices, parking lots.
| Donor Unit | Remote Unit | ||
| Working Frequency (customizable) | Uplink (MHz) | 824~849 | |
| Downlink (MHz) | 869~894 | ||
| Link Frequency | Customizable | ||
| Transmission Distance | ≤ 20km | ||
| No. of Channels (for channel shift) | 1 or 2 | ||
| Frequency Error | ≤ 0.05ppm | ||
| Max. Output Power (customizable) | Uplink | Cable-Access: ≥ 0dBm Wireless-Access: ≥ 30dBm | ≥ 33dBm |
| Downlink | 40dBm | 43dBm | |
| Max. Input Level (Non-Destructive) | ≥ -10dBm | ||
| Max. Gain | Cable-Access: ≥ 45dB Wireless-Access: ≥ 85dB | ≥ 90dB | |
| Gain Adjustment Range | 1~31dB @ step of 1dB | ||
| Voltage Standing Wave Ratio (VSWR) | < 1.5 | ||
| Noise Figure | < 5dB (only for uplink) | ||
| Spurious Emission | Within working band | ≤ -15dBm/30kHz | |
| Out of working band (Δf > 2.5MHz) | 30MHz~1GHz: ≤ -36dBm/100kHz | ||
| Third-Order Intermodulation | ≤ -15dBm/30kHz | ||
| In-Band Ripple | ≤ 3dB | ||
| System Delay | ≤ 10μSec | ||
| 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 -48V / AC 220V, 50/60Hz / AC 110V, 50/60Hz | ||
| Backup Power Supply (optional) | 4 hours | ||
| Casing Level | IP65 | ||
| Dimensions | 428mm x 328mm x 220mm | ||
| Weight | 25kg | 30kg | |
| NMS Monitoring Function (optional) | Real-time alarm for door status, temperature, power supply, LNA, VSWR, self-oscillation, etc. Remote control such as turn on/off, increasing/decreasing output power, etc. Real-time status for output/input power, UL/DL gain, all status of repeater etc. | ||
20W Frequency Shift Repeater Support these Frequencies:
| Frequency Range | Uplink | Downlink |
| CDMA 450 | 452.5 - 457.5MHz | 462.5 - 467.5MHz |
| LTE700 A/B | 699- 716MHz | 729- 746MHz |
| LTE700 C | 777- 787MHz | 746- 756MHz |
| LTE700 D | 788- 798MHz | 758- 768MHz |
| LTE 800 | 832- 862MHz | 791- 821MHz |
| iDEN | 806- 824MHz | 851- 869MHz |
| CDMA 800/GSM 850 | 824- 849MHz | 869- 894MHz |
| GSM 900 | 890- 915MHz | 935- 960MHz |
| EGSM | 880 - 915MHz | 925 - 960MHz |
| AWS1700 | 1710- 1755MHz | 2110- 2155MHz |
| DCS 1800 | 1710- 1785MHz | 1805- 1880MHz |
| PCS 1900 | 1850- 1910MHz | 1930- 1990MHz |
| WCDMA/3G 2100 | 1920- 1980MHz | 2110- 2170MHz |
| LTE 2600 | 2500- 2570MHz | 2620- 2690MHz |
Application Diagram:
