GSM 1800 bandwidth ajustable pico repeater COMBA SP 1820 II2
Featuresture
- Bandwidth adjustable from 2 to 25MHz.
- Integrated wireless modem for remote configuration, monitoring and control.
- Internal backup battery keeps the alarm unit running for up to three hours after power failure.
- Optional OMC available for remote operation and maintenance of a group of repeaters.
- Designed for all outdoor application – waterproof, damp-proof and omni-sealed (IP65).
The RD-1820 bandwidth adjustable repeater is designed for GSM1800. Band-specific linear amplifier and filter effectively amplifies the desired BTS carriers and provides superior out-of-band rejection. Typical units incorporate programmable bandwidth up to 25MHz to suit requirements of the network. Remote configuration and surveillance is possible through Comba’s remote control and monitoring system, via PC or wireless modem to the OMT/OMC. Internal Li-ion backup battery ensures alarm signals are sent out during power failure. The RD-1820 comes in a completely sealed, cast aluminum enclosure, suitable for operation in all weather conditions
Technical Specifications
Electrical | ||||||||
Frequency Range, Uplink | MHz | 1710 – 1785 | ||||||
Frequency Range, Downlink | MHz | 1805 –1880 | ||||||
Operating Bandwidth | MHz | 2 – 25 | ||||||
Total Output Power, Uplink | dBm | 33 ±1 | ||||||
Total Output Power, Downlink | dBm | 33 ±1 | 37 ±1 | 40 ±1 | ||||
Maximum System Gain | dB | 90 ±2 | ||||||
Gain Adjustment Range (1dB step) | dB | 0 – 30 | ||||||
Downlink 3rd Order Intercept (OIP3) | dBm | 52 | 56 | 56 | ||||
Pass Band Ripple, p-p | dB | ≤5 | ||||||
System Noise Figure at Maximum Gain | dB | ≤5 | ||||||
System Group Delay | μsec | ≤6 | ||||||
Offset ≥600KHz | dB | <40 | ||||||
Out-of-band Gain | Offset ≥1MHz | dB | <35 | |||||
Offset ≥5MHz | dB | <25 | ||||||
Spurious | 9kHz to 1GHz | dBm | ≤-36 | |||||
1GHz to 12.75GHz | dBm | ≤-30 | ||||||
Input VSWR | ≤1.5 | |||||||
Absolute Maximum RF Input Power | dBm | +10 | ||||||
Impedance | Ω | 50 | ||||||
Power, Mechanical & Environmental | ||||||||
Dimensions, H x W x D | mm | 606x390x208.6 | ||||||
Weight (approx.) | kg | 32 | ||||||
Power Supply | VAC | 85 – 264 / 47 – 63Hz | ||||||
Power Consumption (approx.) | W | 150 | 160 | 175 | ||||
Power Up Waiting Time (approx.) | sec | 60 | ||||||
MCU Battery Backup Time (approx.) | hr | 3 | ||||||
Enclosure Cooling | Convection | |||||||
RF Connectors | N-Female | |||||||
Operating Temperature | °C | -33 to +55 | ||||||
Operating Humidity | % | ≤95 | ||||||
Environmental Class | IP65 | |||||||
MTBF | hr | 50,000 | ||||||
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