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The EMTS Telecom Services Digital RF Mini Repeater boosts LTE coverage for Band 3 (1800 MHz) and Band 28 (700 MHz) in private and public LTE networks. Designed for large indoor and outdoor sites — industrial campuses, utility facilities, transport corridors, and rural broadband — this dual-band repeater ensures stable, high-quality signal distribution. Advanced DSP independently filters, amplifies, and regenerates uplink and downlink signals while minimizing adjacent-band interference for optimal spectral efficiency and link performance. Housed in a rugged enclosure, onboard microcontrollers continuously monitor gain, temperature, voltage, and faults. Management and remote supervision are available via USB, Wi-Fi app, or optional integrated modem, with full integration into the EMTS Network Management System (NMS) for real-time configuration and alarms. A compliant IMOP algorithm prevents oscillation caused by poor isolation between donor and service antennas, and an optional ICS mechanism enables operation with isolation as low as Gain – 10 dB.
EMTS Telecom Services Ltd. offers a comprehensive portfolio of enhanced coverage solutions for the Wireless
Key Features
- Designed to extend in-building coverage of 4G at band 28 & band 3
- Comply with ETSI and 3GPP Standards with 20dBm composite output power
- Fully transparent to the 4G network
- Friendly GUI or direct WIFI connectivity for a plug-and-play installation
- Advanced Isolation Measurement Oscillation Preventing (IMOP) algorithm prevents self- oscillation due to poor isolation
- ICS Option enables 25dB improvement with isolation requirements
- Low EVM by utilizing advanced Ultra-High Linear power and spurious emission with extremely low power consumption
- Smart Automatic Level Control (ALC) ensures output level is stable and adjustable
- Simple installation with external AC/DC power supply
- Optional 4G modem for Remate Management and control using EMTS NMS
Technical Specifications
| Technical Specifications |
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| Electrical Specifications |
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| B28 (700) | B3 (1800) |
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| Frequency Range | Uplink: 703~748MHz / 1710~1785MHz / Downlink: 1805~1880MHz |
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| Bandwidth per Sub-band (0.2-10MHz (adjustable)) | 0.2-30 MHz (adjustable) |
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| Gain | Uplink: 85±3 dB / 85±3 dB / Downlink: 85±3dB |
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| Manual Gain Control | 31 dB in step of 1 dB |
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| Automatic Gain Control | ≧ 20 dB |
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| Gain Flatness (per sub-band) | ≦ ±3.5 dB (peak-to-peak) |
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| Max. Input Power Without Damage | 0 dBm |
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| Output Power | Uplink: 17±2 dBm / Downlink: 20±2 dBm |
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| Spurious Emission (9KHz-1GHz) | ≦ -36dBm |
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| 1GHz-12.75GHz | ≦ -30dBm |
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| ACRR (±10/20MHz) | ≦-36dBc/30KHz |
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| ±20/40MHz | ≦-40dBc/30KHz |
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| EVM (≦ 6%) | ≦ 6% |
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| Frequency Stability | ≦ ±0.01 ppm |
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| Noise Figure | ≦ 6 dB |
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| VSWR | ≦ 2:1 |
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| System Delay | ≦ 6 µs |
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| Interference Cancellation (Optional ) | ≧25 dB |
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| RF Connector | N-Female |
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| Impedance | 50 Ω |
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| Power Supply | Input: AC 100~240 V, 50/ 60 Hz; Output: DC 5 V/ 5 A |
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| Power Consumption | ≦ 50 W |
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| Mechanical Specifications |
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| Dimensions | 318*218*68mm |
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| Weight | ≦ 7 kgs |
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| Environmental Specifications |
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| IP Rating | IP40 (indoor) |
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| Operating Temperature | -20 °C to 50 °C office buildings, subways. |
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| Local and Remote-Control Specifications |
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| Indications | Power Supply, Running, Alarm |
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| NMS (Local) | Via USB |
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| Remote | Via Cloud-based NMS via 4G Modem (optional) |
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| Comply with Standards |
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| Safety | EN 62368-1 General, EN 50385 General |
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| EMC | EN 301 489-1, EN 301 489-50 |
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| Radio | ETSI EN 303 609 & ETSI EN 301 908-11 3GPP TS 36.143 & 3GPP TS 36.106 |
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| CE | Compliant with relevant EU directives |
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| Block Diagram |
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| office buildings, subways. |
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