Hytera RD625 - DMR repeater

Compact DMR repeater for wall mounting.

Product description

The RD625 is a digital repeater designed specifically to provide reliable radio coverage in buildings and tunnels. The RD625 has been developed in accordance with the Digital Mobile Radio (DMR) open ETSI standard and can be operated with either digital or analog signals.

Highlights – Flexible IP networking

Hytera's DMR repeater can be connected to an IP-based communication network with multiple sites. The roaming function is used to provide radios in this radio network with voice and data services across cells.

Connecting VoIP private automatic branch exchanges

The RD625 repeater provides a connection to existing VoIP telephone systems on the DMR radio network as SIP subscriber. This allows DMR radio subscribers to hold half-duplex conversations with participants from the telephone network. Telephone subscribers have the option of making either individual or group calls in the radio network.

Analog and digital operation with the ability to switch automatically

The RD625 repeater can be operated both in analog and in digital mode and is completely compatible with analog systems currently in use. The device can automatically change between digital and analog mode depending on the type of receiver signal, saving both time and money by eliminating the need to configure frequencies and channels manually.

Automatic AC/DC switchover

The integrated power supply of the RD625 automatically chooses between alternating current and direct current. This makes it possible to provide a fail-safe radio signal by connecting the repeater to an independent source of direct current (UPS) in addition to the normal supply of power. If the AC supply fails, the RD625 switches to the second power supply automatically.

Encryption of the Air Interface

With air interface encryption signaling and communications data between radios and repeaters are transmitted with reliable protection.

Easy installation

The RD625's well-engineered design makes wall mounting easy using the optionally available wall bracket. This makes it possible to install the repeater flexibly and conveniently in buildings.

Compact all-in-one design

The RD625 combines transmitter and receiver components, the power supply and the duplexer (optional) in its compact chassis.

Repeater diagnostics and control system (RDAC)

The RD625 can be monitored, checked and controlled using a PC-based application. The software supports network access from multiple points and allows administrators to monitor the DMR radio network.

Repeater access management

To ensure a high level of security, the RD625 features a repeater access monitor that protect the radio network from unauthorized access attempts.

Features

Technical data

General data

Frequency range	VHF: 136 – 174 MHz UHF: 400 – 470 MHz / 450 – 527 MHz
Supported operating modes	DMR Tier II Analog DMR Tier II in accordance with ETSI TS 102 361-1/2/3
Number of channels	1024
Number of zones	1
Channel spacing	12.5 / 20 / 25 kHz
Operating voltage	13.6 ± 15% V_DC 90 V - 264 V_AC
Max. power consumption (in stand by)	≤ 0.5 A at 13.6 V _DC
Max. power consumption (during transmission)	≤ 5.5 A at 13.6 V _DC
Frequency stability	±0.5 ppm
Antenna impedance	50 Ω
Dimensions (H × B × T)	210 x 348 x 108 mm
Weight	2870 g

Transmitter

Transmitting power	1 – 25 W (continuous)
Modulation	11K0F3E at 12.5 kHz 14K0F3E at 20 kHz 16K0F3E at 25 kHz
4FSK digital modulation	12.5 kHz (data only): 7K60FXD 12.5 kHz (data and voice): 7K60FXW
Interfering signals and harmonics	-36 dBm 8< 1 GHz) -30 dBm (> 1 GHz)
Modulation limiting	±2.5 kHz at 12.5 kHz ±4.0 kHz at 20 kHz ±5.0 kHz at 25 kHz
Noise cancellation	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 response	+1 dB to -3 dB
Audio distortion	≤ 3 %
Digital vocoder type	AMBE++

Receiver

Sensitivity (analog)	0.3 μV (12 dB SINAD) 0.22 μV (typical) (12 dB SINAD) 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 and 25 kHz ETSI: 60 dB at 12.5 kHz / 70 dB at 20 and 25 kHz
Intermodulation	TIA-603: 75 dB at 12.5/20/25 kHz ETSI: 70 dB at 12.5/20/25 kHz
Spurious response rejection	TIA-603: 75 dB at 12.5/20/25 kHz ETSI: 70 dB at 12.5/20/25 kHz
Signal-noise ratio (S/N)	40 dB at 12.5 kHz 43 dB at 20 kHz 45 dB at 25 kHz
Nominal audio power output	0,5W
Audio distortion	≤ 3 %
Audio response	+1 dB to -3 dB
Conducted spurious emission	< -57 dBm