Hytera RD625 VHF Digital and Analogue DMR Repeater

The Hytera RD625 VHF DMR Repeater is designed in line with the Digital Mobile Radio (DMR) open ETSI standard, ensuring seamless operation with both digital and analogue signals. This versatile repeater is ideal for enhancing communication in various environments.

Key Features

• Flexible IP Networking: Connect the RD625 to an IP-based communication network across multiple sites. Its robust roaming function allows radios within the network to access voice and data services efficiently across different cells.
• VoIP Integration: Easily connect existing VoIP telephone systems to the DMR radio network, enabling half-duplex conversations between DMR radio users and telephone network participants. Make individual or group calls with ease.
• Automatic Mode Switching: The RD625 supports both analogue and digital modes and automatically switches between them based on the type of incoming signal, saving time and eliminating the need to manually configure frequencies and channels.
• Adaptable Transmitting Power: Equipped with an integrated power supply that can automatically switch to a backup DC supply if the AC power fails, providing a reliable communication solution even in critical situations.

General Specifications

• Frequency Range (VHF): 136 - 174 MHz
• Supported Operating Modes: DMR Tier II (conventional DMR) and analogue
• Channel Capacity: 16
• Channel Spacing: 12.5 / 20 / 25 kHz
• Operating Voltage: 13.6 ± 15% VDC / 90 V - 264 VDC
• Max. Power Consumption: ≤ 0.5 A (standby), ≤ 5.5 A (transmission) at 13.6 VDC
• Frequency Stability: ± 0.5 ppm
• Antenna Impedance: 50 Ω
• Dimensions (H × W × D): 108 × 210 × 348 mm
• Weight: 5000 g (with duplexer)

Receiver Performance

• Sensitivity (Analogue): 0.3 μV (12 dB SINAD), 0.22 μV (typical), 0.4 μV (20 dB SINAD)
• Sensitivity (Digital): 0.3 μV / BER 5%
• Adjacent Channel Selectivity: TIA-603: 65 dB at 12.5 kHz / 75 dB at 20 / 25 kHz; ETSI: 60 dB at 12.5 kHz / 70 dB at 20 / 25 kHz
• Intermodulation: TIA-603: 75 dB; ETSI: 70 dB
• Spurious Response Rejection: TIA-603: 75 dB; ETSI: 70 dB
• Signal-Noise Ratio (S/N): 40 dB at 12.5 kHz, 43 dB at 20 kHz, 45 dB at 25 kHz
• Audio Distortion: ≤ 3%
• Audio Sensitivity: +1 to -3 dB
• Conducted Spurious Emission: < -57 dBm

Transmitter Specifications

• Transmitting Power: 1 - 25 W (adjustable)
• Modulation: 11 K0F3E at 12.5 kHz, 14 K0F3E at 20 kHz, 16 K0F3E at 25 kHz
• 4FSK Digital Modulation: 12.5 kHz (data only): 7K60FXD, 12.5 kHz (data and voice): 7K60FXW
• Interfering Signals and Harmonics: -36dBm (< 1GHz), -30dBm (> 1GHz)
• Modulation Limiting: ± 2.5 kHz at 12.5 kHz, ± 4.0 kHz at 20 kHz, ± 5.0 kHz at 25 kHz
• Hum and Noise: 40 dB at 12.5 kHz, 43 dB at 20 kHz, 45 dB at 25 kHz
• Adjacent Channel Selectivity: 60 dB at 12.5 kHz, 70 dB at 20/25 kHz
• Audio Sensitivity: +1 to -3 dB
• Nominal Audio Distortion: ≤3%
• Digital Vocoder Type: AMBE+2TM

Environmental Conditions

• Operating Temperature Range: -30 °C to +60 °C
• Storage Temperature Range: -40 °C to +85 °C