Radio Link Module

BF-TR908

BF-TR908 is a professional DMR radio link device that enables repeater/base station to connect with another repeater in a remote site where there is no infrastructure of IP connection. It operates in single frequency repeater mode and DMO mode to extend DMR radios communication range. It is mainly used to connect stations without link and provide one slot for voice communication, GPS data and SMS services.

Inquiry

Features & Benefits

Specification

Accessories

Dual Operating Mode

BF-TR908 can operate in single frequency repeater mode and DMO mode, which greatly extend DMR radios communication range.

General

Frequency Range

VHF:150MHz; UHF: 400MHz/350MHz

Zone

Channel Capacity

1024

Channel Spacing

12.5KHz/25KHz

Operating Voltage

DC 13.8V(±20%)

Frequency Stability

±1ppm

Antenna Impedance

50Ω

Size

218（L）*330（W）*44（H）mm

Weight

2.7KG

Transmitter

Output Power

VHF/UHF high power：25W ; VHF/UHF low power：10W

4FSK Modulation

7K60FXD (data only; 7K60FXE (data and voice)

FM Modulation

12.5 kHz：8K50F3E；25 kHz：16KΦF3E；

Modulation Limitation

±2.5kHz

FM Noise

-43dB

Spurious Radiation

-36 dBm≤1GHz/-30 dBm≥1GHz

Adjacent Channel Selectivity

≤-60dB

Frequency Response

+1/-3 dB

Audio Distortion

Vocoder

AMBE+2™

Receiver

Digital Sensitivity

5% BER：0.25 uV

Analog Sensitivity

0.28 uV (12 dB SINAD)

Intermodulation

65 dB

Adjacent Channel Selectivity

60 dB

Spurious Response

70 dB

FM Noise

-45dB

Frequency Response

+1/-3 dB

Audio Power

0dbm

Audio Distortion

3%(typical)

Conduction Radiation

-57dBm

GPS Precision

Horizontal Accuracy ≤110m (with good signal)

TTFF (first location) Cold Boot

＜1 minute(with good signal)

TTFF (first location) Hot Boot

＜10 seconds (with good signal)

Output

DC Output Voltage

13.8V

Rated Current

25.4A

Rated Power

350W

Output Efficiency

88%

Voltage ADJ. Range

13.5-14,1V

Voltage Tolerance

±1.0%

Line Regulation

±1%

Load Regulation

±1%

Setup and Rise Time

3S/ 220VAC, full load

Hold Up Time

8ms at full load

Environmental Specification

Working Temperature

-25℃—+65℃

Storage Temperature

-25℃—+70℃

Humidity Protection

MIL-STD-810C/D/E/F

Shock and Vibration

MIL-STD-810C/D/E/F