SKU: MR-85S-20W75

Band Selective Mini Repeater (BDA)

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The EMTS Telecom Services Ltd. SMR850MHz Band Selective Mini Repeater (BDA) provides an affordable solution to solve the indoor signal coverage problems in LTE, WCDMA, APCO25, TETRA or PMR (Smart Zone) 800MHz systems due to signal fading and attenuation caused by architecture obstacles. It’s easy installation and maintenance helps the operator to get fast return on investment. The repeater is working as a relay between the BTS and mobiles. It picks up the strongest signal from BTS via the Donor Antenna, linearly amplifies the signal and then retransmits it via the Indoor Signal Distribution System to the weak/blind coverage area and the mobile signal is also amplified and retransmitted to the BTS via the opposite direction. The band-selective function can choose to amplify the signal within the customized band. Hence, the installation of the Mini Repeater is easy, simply just plug and play. With The repeater status can be known during installation with indication on the repeater front panel, which is very convenient to installation teams.

EMTS Telecom Services Ltd. offers a comprehensive portfolio of enhanced coverage solutions for the Wireless Networks, Based unique and complex network needs for the Wireless Networks.

Key Features

  • Bi Directional Amplifier (BDA) configuration
  • Supports SMR 850 MHz, iDEN,LTE, APCO25, TETRA & PMR technologies
  • Band Selective supporting or partial bandwidth with high out of band rejection
  • User friendly front panel control & plug and play installation – the repeater status can be known during installation
  • Smart function which can be activated via the front panel, preventing UL interference, self-oscillation and also keeps optimal condition automatically
  • Isolation detection function
  • Low power consumption with sleeping mode (saving power)
  • Linear power amplification to suppress inter-modulation and spurious emission
  • Smart Automatic Level Control (ALC) ensures output level stable and adjustable
  • Simple installation with external AC/DC adapter
Technical Specifications
Technical Specifications
1.Electrical Specification (Uplink) Downlink
Frequency Range (806 – 825 MHz) 851 –870 MHz
Full or partial bandwidth Full or partial bandwidth
Minimum Gain ≧75dB
Auto Gain Control(AGC) ≧25dB
Auto Gain Setup Range(Inside) 31dB/1dB step
Gain Flatness +/- 1.5 dB max
Maximum Input power 0 dBm
Output Power (20 dBm) 20 dBm
Intermodulation (9KHz~1GHz) ≦ -30 dBm
Products
1GHz~12.75GHz ≦ -30 dBm
Spurious (9KHz~1GHz) ≦ -36 dBm
Emission
1GHz~12.75GHz ≦ -30 dBm
Out of Band (± 400 KHz) ≥ 25 dBc
Rejection
± 600 KHz ≥ 35 dBc
± 1 MHz ≥ 45dBc
± 5 MHz ≥ 50 dBc
Noise Figure ≦ 6dB
VSWR ≦1.5
Group Delay ≦ 5μs
Power Supply DC 5A/9V – ≦ 50W
2.Mechanical specification
Dimensions 191*296*76mm
Weight 4.5kg
I/O Connector/ Impedance N-female / (Nominal)50Ω
3.Environmental specification
IP Rating IP40
Operating Temperature -10℃ to 50℃
4. Monitoring specification
LED indication installation Or ALC1~5dB,red
Power LED DC ON/OFF
wireless Networks.

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