SKU: MR-400-20W80

Mini Repeater (BDA) High Performances High Selectivity

Download Datasheet (PDF)

The EMTS Telecom Services Mini-Repeater (MR) is a Bi-Directional Amplifier; it provides an excellent solution to the problem of poor signal coverage. The MR amplifies the signals from mobile phones and base stations and can be used in 'dead zones' where service is poor. Typical installations can be in basements, offices, restaurants, hotels, apartments, parking lots, etc., initially blocked by structures and limited obstacles or coverage. Easy installation, lightweight Design, and comfortable use make the EMTS Mini-Repeater a cost-effective and practical solution for extending signal coverage. An IMOP (Isolation Measurement – Oscillation Prevention) mechanism designed to prevent oscillation due to low or marginal isolation between donor and service antennas.

EMTS Telecom Services Ltd. offers a comprehensive portfolio of enhanced coverage solutions for the Wireless

Key Features

  • Designed to extend in-building coverage of TETRA/ LMR/DMR at the 400MHz band
  • Comply with APCO25, TETRA & ETSI Standards
  • Fully transparent to the DMR/LMR network; designed to support voice data and dispatch
  • Friendly GUI or direct WIFI connectivity for a plug-and-play installation
  • Smart function (IMOP) prevents self-oscillation due to poor isolation using Isolation Measurement Oscillation Preventing (IMOP) smart algorithm
  • Linear power amplification effectively suppresses inter-modulation 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
  • An Optional IP65 enclosure
  • An optional 4G modem for Remate Management and control using EMTS NMS
Technical Specifications
Technical Specifications
Electrical Specification (Uplink) Downlink
Frequency (380-385) 390-395
385-390 395-400
410-415 420-425
415-420 425-430
450-455 460-465
455-460 465-470
Bandwidth Band Selective type according to the above list of standard frequencies or customized band per customer definition
Gain (80dB +/-3dB) 80dB +/-3dB
Passband Ripple ± 1.5dB
Gain Attenuation Range (AGC) 0-20 dB in 1 dB step
Manual Gain Control 0-30 dB in 1dB step
Composite Output Power (+ 20 dBm) + 20dBm
Noise Figure @ Maximum Gain 5 dB
Propagation Delay (5μsec) 5μsec
Superius Emission & Intermodulation Fully comply with ETSI TS 151 026
Spurious emissions ≤-36dBm (9KHz to 1GHz). ≤-30dBm (1GHz to 12.5GHz)
Third-order Inter-Modulation ≤ -45dBc / 30kHz (measured under rated output power)
Impedance Level 50 ohms
Power Supply 12v dc via external AC to DC convertor
VSWR 1.8:1
Environmental specification
Operating Temperature -25 to 55° C
IP Rating/water resistance IP30 I (optional P65)
MTBF 100,000 Hours
Mechanical specification
RF Connector N-Type
Dimensions 200 x 198 x 82mm
Weight 8Kg
Installation Wall Mounting, Tower Mounting, Pole Mounting, and Rack
LDD ideation specification
Alarm and Power LED (1.) Power On/Off / Major Alarm LED
2. Green works properly, RED = Alarm
3. LED Off =Repeater is off or no AC power
4. Isolation is lower than the isolation for equipment installation LED ideation.
5. ALC ideation
Comply with Standards
Comply with EN 301 489-18, EN 60 950 & TS 101 789-1 73/23/EEG
Safety EN60950-1, EN 50385
EMC EN 301 489-1, EN 301 489
Radio EN 302 561
DMR ETSI TS 101 789-1 and EN 303 035-1 and EN 300 394-1
CE Comply

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