J3I-DB 20~23dBm dual band selecitve repeater are specifically designed for cellular operators who wants to support two systems at the same time.
1.It is a traditional repeater with RF N female connectors, mostly used in indoor distribution system to be connected wiht more than one antenna for optimal coverage.
2.They have below recommended coverage sizes:1) J3I-DB-20: 500~1000 squae meters. 2). J3I-DB-23: 1000~1500 Sqm. 3). J3I-DB-27: 1500~2500 Sqm.
3.Dual band selective repeater design to support any two relevant systems of GSM850,GSM900,DCS, PCS; CDMA450, CDMA800,CDMA1900,WCDMA2100 and AWS, it can affectively increase the acceptance willingness of the property owners as it is elegant looking and more convenient to install.
4.Intermediate SAW filter technology for very sharp out of band rejection to amplify only specific operators’s signals and reject all the others.
5.Manual gain control (MGC) available for both uplink and downlink to adjust the gain value for proper coverage during installation or maintance.
6.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.
7.Auto shut off design available for both uplink and downlink to avoid serious interference to network effectively when the repeater is in deep self-oscillation of very strong input power.
8.The repeater can be locally and remotely monitored and controlled through its integrated software circuit, remote control software of both local NMS and NMS in Server. NMS can be connected with its upper level software throught SNMP. (Optional).
| 1 | 1. Compact size with stable performance. |
| 2 | 2. Support antenna isolation detection. |
| 3 | 3. Designed for indoor application. |
| 4 | 4. Automatic gain control and manual gain control. |
| 5 | 5. Intelligent mode setting, automatically set the values. |
| 6 | 6. Auto shut off function available to avoid the damage and interference in unusual signal conditions. |
| 7 | 7. Easy installation & maintenance. |
| 8 | 8. Extend cell phone battery life. |
| Product Number | Dual System/Band Combine Model No. J3I-EGSM/WCDMA/DCS/LTE-20/23/25 |
| Frequency range (Available) | CDMA800(824-849/869-894)/CDMA1900(1850-1910/1930-1990)/EGSM900(880-915/925-960)DCS1800(1710-1785/1805-1880) WCDMA(1920-1980/2110-2170) PCS(1850-1910/1930-1990) /TDD2300(2320-2370)/TDD2500 |
| Max. Gain | 75db/80dB |
| Max. Output Power | 20dBm/23dBm/25dBm |
| AGC control range | ≥25dB |
| In-band Ripple | ≤6dB |
| Max. Input Power Without Damage | ≤0dBm |
| Noise Figure | ≤ 6dB |
| Group delay time | ≤ 5μs |
| VSWR | ≤ 2.0 |
| Third-order Inter-Modulation | ≤-40dBc Max |
| Spurious Emission | 9kHz~1GHz: ≤ -36dBm/30kHz 1GHz~12.75GHz:≤-30dBm/30kHz |
| Power Consumption | ≤ 60 W |
| Power Supply | Input AC100~ 240V, Output DC 9V/7A (CE Approved) |
| Alarm Monitoring System | Alarm for uplink self-oscillation |
| Indication LED | Power supply, AGC, Isolation |
| Operating temperature | -10 ~ +50 °C |
| Application | Indoor(IP30) |
| Connectors type | N- Female |
| Weight | 10 kg |
| Dimensions(without connectors) | 350*270*140mm |
