ST-GD27 Dual band repeater is to support any two mobile band existing in the world to help end users to improve mobile signals for much better phone call quality and smoother data transmission. It is designed to support coverage area max can up to 2000 square meters with proper engineering. Below are the main features. 1. The consumer repeater is an ideal solution for providing a cost effective improvement in cellular in-building coverage of a home, office, restaurant or building, in the quickest time possible. 2. Manual gain control (MGC) available for both uplink and downlink to adjust the gain value for proper coverage during installation or maintenance. 3. To maintain safe and specific output signal levels and give alarms on self-oscillation, the repeater has built-in AGC and ALC circuits, which can automatically control the gain of the repeater depending upon the strength of input signals. 4. Auto shut off function available for both uplink and downlink to avoid deep self-oscilation from jamming the towers, saving your trouble from operators. 5.Wide band feature enables all devices operating within the wide frequency range of the repeater to see an improvement in performance. 6.Multiple phones and other handheld devices throughout a building can benefit from a wireless repeater. 7.Supports up to (500) users / calls simultaneously. 8.Extended phone battery life. (Your phone does not need to put out as much power due to improved reception. . Specification of ST-GD27 Dual band repeater: Electrical specification Uplink Downlink Frequency Range GSM 890-915 MHz 935 ~ 960 MHz DCS 1710-1785 MHz 1805 ~ 1880 MHz Max .Gain ≥ 70dB ≥ 75dB Max .Output Power ≥ 24dBm ≥ 27dBm MGC ( Step Attenuation ) ≥ 31dB / 1dB step Automatic Level Control ≥ 20dB Gain Flatness GSM & CDMA Tpy≤ 6dB(P-P); DCS,PCS ≤ 8dB(P-P) WCDMA ≤ 2dB/ 3.84MHz,Full Band ≤ 5dB(P-P) Noise Figure ≤ 5dB VSWR ≤ 2.0 Group Delay ≤ 1.5μs Frequency stability ≤ 0.01ppm Spurious Emission & Output inter-modulation GSM Meet ETSI TS 151 026 V 6.1.0 WCDMA Meet 3GPP TS 25.143 ( V 6.2.0 ) CDMA Meet IS95 & CDMA2000 WCDMA System Spurious Emission Mask Meet 3GPP TS 25.143 ( V 6.2.0 ) Modulation Accuracy ≤ 12.5% Peak Code Domain Error ≤ -35dB@Spreading Factor 256 CDMA System Rho ρ > 0.980 ACPR Meet IS95 & CDMA2000 Mechanical Specifications Standard I /O Port N-Female Impedance 50 ohm Operating Temperature -25ºC~+55ºC Environment Conditions IP40 Dimensions 220x320x40mm Weight ≤ 3.00Kg Power Supply Input AC90-264V,output DC 5V / 6A LED Alarm Standard Power LED Power Indicator UL LED Be lighted when there is phone calling DL 1 Be lighted when Outdoor signal is -65dB DL 2 Be lighted when Outdoor signal only -55dB DL 3 Be lighted when Outdoor signal only -50dB
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