900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater

900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater   Product Description     Detailed Product Description 1,Various repeaters and low MOQ;
2,Easy operation;
3,Ehance mobile signal strength;
4,Improve communication quality;

  Function China Communication Repeater included CDMA800MHz/ GSM900MHz / DCS1800MHz / WCDMA2100MHz repeaters. The repeaters can solve wireless system growth problems a major crisis which is being faced by most of the cellular serice providers those who are trying to expand their coverage to rural areas. Repeaters are far more economical than a new base station when coverage must be extended beyond the range of existing base stations. With a growing user base,wireless communications provides want service extensions that increase coverage,not just distance.   Repeater Functions   Feature 1,Suit all systems of GSM,DCS,CDMA,WCDMA etc. 2,High linearity PA; high system gain; 3,Short construction period,flexible for installation and easy for relocation; 4,Local and remote monitoring with automatic fault alarm; 5,Aluminum alloy enclosure for excellent heat dissipation;   Application The coverage of sites including sub-urban industrial sites, tourist resorts, small towers, tunnels, airports, shopping centers, hotels, exhibition centers, subways, elevators, parking garages, sports stadiums, along highways and so on.    

Items			900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater
Frequency  Range		Uplink	890-915MHz
		Downlink	935-960MHz
Output Power		Uplink	Min +23dBm - +33dBm
		Downlink	Min. +30dBm - +40dBm
Configurable Channels			1, 2for option
Working Bandwidth			Various bandwidth is available upon request
Gain			Min. 90dB
Gain Control Range			31dB (1dB Step)
VSWR			< 1.5
Ripple in Band			Max +/-1.5dB
In-band Inter Modulation Attenuation			Comply to ETSI Requirement
ACPR	5MHz		≤-45dBc
	10MHz		≤-55dBc
Spurious Emissions	9KHz-1GHz		Max -36dBm
	1GHz-12.75GHz		Max -30dBm
RF Connector			N-type Female
I/O Impedance			50 ohm
Noise Figure			Max 5dB
Group Time Delay			Max 5µS
Temperature Range			-25 degree Celsius to +55 degree Celsius
Relative Humidity			Max 95%
MTBF			Min. 100000 hrs
Power Supply			DC -48V / AC220V (+/-15%), 50Hz
UPS Backup Power Supply (Optional)			6 hours / 8 hours
NMS Monitor Function			Real-time alarm for Door Status, Temperature, Power Supply, VSWR, Output Power, Gain, Uplink ATT, Downlink ATT and etc.
Remote Control Module (Optional)			RS232 or RJ45 + Wireless Modem + Chargeable Li-ion Battery

    Detailed Images       900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater 900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater 900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater 900mhz gsm repeater china signal transmitter repeater 2g/3g/4g signal booster/repeater            package&shipment   What is Repeater? The repeater is consist with the antenna, rf duplexer, low noise amplifier, mixer, electric adjustable attenuator, filter, power amplifier and other components or modules, downward link. Its working principle is: use the forward (donor antenna) will base station antenna downward into the reception straight machine, through the low noise amplifier useful signal amplifier, signal of noise signal, improve signal-to-noise ratio (S/N);Then through the inverter to the intermediate frequency signal, the filter filter, intermediate frequency amplifier, frequency shift on frequency conversion to rf again, amplified by power amplifier, by to the antenna (resend antenna) after launch to the mobile station;After use to move the antenna at the same time on line signals, the other path by the upward amplification of link: namely pass under the low noise amplifier, frequency converter, filter, putting, inverter, power amplifier and launch to the base station.So as to achieve two-way communication base station and mobile station.