SKU: PR-85S-30W80

SMR 850MHz Bi Directional Amplifier

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The EMTS Telecom Services Ltd. SMR850MHzBand Selective Bi Directional Amplifier (BDA) provides an affordable solution to solve the indoor signal coverage problems in LTE, APCO25, TETRA or PMR (Smart Zone) 800MHz systems due to signal fading and attenuation caused by architecture obstacles.

It’s easy installation and maintenance helpsthe operator to get fast return on investment. The repeater is working as a relay between the BTS and mobiles. Itpicks upthe strongest signal from BTS via the Donor Antenna, linearly amplifiesthe signal and then retransmitsitvia 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 Repeater is easy, simply just plug and play. 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) with 30dBm composite downlink output power
  • Supports SMR 850 MHz, iDEN, APCO25, TETRA & LTE technologies
  • Band Selective configuration supporting dual block with high out of band rejection
  • User friendly control & plug and play 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 effectively suppress inter-modulation and spurious emission
  • Smart Automatic Level Control (ALC) ensures output level stable and adjustable continuously
Technical Specifications
Technical Specifications
1.Electrical Specification
Uplink Downlink
Frequency Range (806 –824 MHz) 851–869 MHz
Full or any partial bandwidth Full or any partial bandwidth
Minimum Gain ≧80dB
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 (24 dBm) 30 dBm
Intermodulation (9KHz~1GHz) ≦ -30 dBm
Products
1GHz~12.75GHz ≦ -30dBm
Spurious (9KHz~1GHz) ≦ -36dBm
Emission
1GHz~12.75GHz ≦ -30dBm
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 Consumption ≦100 W
Power Supply AC 220V±20%,50±5Hz
2.Mechanical specification
Dimensions 330 x 280 x 90 mm
Weight 15 kg
I/O Connector/ Impedance N-female / (Nominal)50Ω
3.Environmental specification
IP Rating IP65
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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