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DMR Band Selective RF BDA

DMR Band Selective RF BDA

Model: AT7A43B1


Output Power30/.../43±2dBm (Customized)

Maximum Gain80/.../95±3dB(Customized)

Product Description

The DMR RF BDA is designed to provide a more cost-effective solution than adding a new Base Transceiver Station (BTS) to improve signal coverage and communication quality in TETRA system. And its easy installation and maintenance can help carrier get fast return.

The BDA is working as a relay between the BTS and mobiles. It receives the low-power signal from BTS via the Donor Antenna, linearly amplifies the signal and then retransmits it via the Coverage Antenna 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 amplify all signals in the whole band (bandwidth is customized).


1. Aluminum-alloy casing with IP65 protection for high resistance to dust, water and corrosion.

2. Supporting TETRA/DMR/P25/iDEN system.

3. Low interference to BTS by adopting linear amplifier with high gain and low noise.

4. Adopting filter with highly selectivity and low insertion loss eliminates interference between uplink and downlink.

5. RJ45 port provides a link to a notebook for local supervision or IP Based NMS (Network Management System) that can remotely supervise BDA’s working status and download operational parameters to the BDA Via Ethernet or LAN. 



To expand signal coverage or fill signal blind area where BTS signal is weak or unavailable.

1. Public Safety

2. Transportation

3. Utilities

4. Government

5. Military


7. Commercial & Industry

8. Oil & Gas

Technical Specification

Frequeney Range(Customized)UplinkDownlink







Bandwidth(To Specify Before Production)From 1 to 15MHz, Filter SAW Adjusted
Maximum Gain(Customized)85±3dB85/.../90±3dB
Maximum Output Power(Customized)30±2dBm30/.../43±2dBm
In-Band Flatness≤±2.5dB
ALC(Auto Level Control)≤2dB(When The Maximum Output Power of BDA is Reached, lncrease Input Power by 1~20dbm, Output Variation ≤2dB)
Noise Figure≤5dB
Gain Adjustment Range1~31 dB @step of 1 dB
System Delay≤5uSec
Spurious Emission9KHz-1GHz:≤-36dBm/30KHz
Third-Order inter-Modulation≤-45dBc
Output/lnput Restance50Ω
RF ConnectorN-Type (Female)
Working Temperature-25℃~+55℃
Relative Humidity Range≤95%(Non Condensing)
Power SupplyAC220N, 50/60Hz


Applicationlndoor or Outdoor(IP65)
Local ControlWeb Browser GUI Local Va RJ-45 Interface or WiFi Hotspot
NMS ModeOptional)Wirelss Modem(3G/4G), IP Connectivity
NMS Function(Optional)

Real-time Alarm for Door Status, Temperature, Power Supply, VSWR etc;

Remote Control Such as Turn On/Off, lncreasing/Deareasing Output Power etc;

Real-time Status for Output/Input Power, UL/DL Gain, AlI Status of BDA etc.

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