Simply a jack-of-all-trades: The RD985S supports conventional analog and DMR radio as well a DMR trunked radio, single-frequency network and Hytera XPT.
The digital repeater RD985S is a genuine multi-talent: It supports not only conventional radio operation in analog and DRM modes, but can also be used in DMR trunked radio systems and, besides, is responsible for radio coverage in DMR Simulcast and Hytera XPT Systems.
The repeater was developed in conjunction with the open ETSI standard Digital Mobile Radio (DMR) and, thanks to its technical features, it is your perfect companion on the path toward digital radio.
All the repeaters from Hytera can be connected in digital mode via IP connection to a comprehensive radio network. In analog mode, the repeaters can be connected together back-to-back. Both in conventional analog and DMR modes (DMR Tier II), the RD985 and RD985S repeaters can be used with the RD625 and RD965 repeaters in a radio system.
The RD985S repeater supports not only conventional analog and digital modes, but also other modes that can be unlocked with an upgrade. It can be upgraded into a base station for DMR synchronization, DMR trunked radio or Hytera XPT radio systems. This means that the RD985S is a secure investment for growing radio projects.
Thanks to the TDMA technology, twice as many users can use the same channel, such as is the case with analog or digital FDMA systems. Due to the restricted frequency resources, this represents an important relief and reduces the expenses for system terminals and licenses.
To protect your radio communications against eavesdropping, the RD985S repeater possesses advanced digital encryption functions, according to the DMRA specification. Depending on the variant, it supports 40-, 128- or 256-bit encryption. With air interface encryption signaling and communications data between radios and repeaters are transmitted with reliable protection.
The RD985S repeater can automatically change between digital and analog mode depending on the type of receiver signal.
The RD985S repeater offers an adjustable transmitting power of up to 100 Watt (UHF) and thereby satisfies the high requirements for modern PMR radio systems.
Since the RD985S was designed according to military standards, it offers high reliability and excellent performance. Test results from independent laboratories have shown that the device can be operated for up to 100,000 hours without interference (MTBF) and it therefore meets the requirements for use in extreme situations.
The RD985S can be installed in a 19-inch equipment rack with an optional installation kit. Alternatively, it can easily be operated on a rack, a bracket or a table. With the additionally available installation kit, an optional duplexer can be housed in the chassis.
The booster can dissipate any generated heat with extraordinary efficiency. In addition, the integrated fan system ensures stable and powerful operation.
Whether during ongoing operation or during a maintenance task: You can easily access all the desired information via the large LCD color display.
Integrated LEDs on the volume controller complement the innovative repeater design and simultaneously optimize its use. The repeaters are easy to use thanks to their clear menus and the large navigation controller.
The 8 LED indicators on the front allow the current repeater status to be easily identified
General data
| Frequency range |
VHF: 136 MHz - 174 MHz (RD985S) |
| Supported operating modes |
|
| Number of channels |
16 |
| Number of zones |
1 |
| Channel spacing |
12.5 / 20 / 25 kHz (analog) |
| Operating voltage |
RD985S: 13,6 ± 15% VDC |
| Max. power consumption (in stand by) |
RD985S: ≤ 0.8 A |
| Max. current consumption (during transmission) |
RD985S: ≤ 11 A |
| Frequency stability |
± 0.5 ppm |
| Antenna impedance |
50 Ω |
| Dimensions (H × B × T) |
88 × 483 × 366 mm |
| Weight |
8.5 kg |
| LCD display |
220 × 176 pixel, 262,000 colors, 2.0 inch, 4rows |
Transmitter
| Transmitting power |
RD985S: 1 – 50 W |
| Modulation |
11 K0F3E at 12.5 kHz |
| 4FSK digital modulation |
12.5 kHz (data only): 7K60FXD |
| Interfering signals and harmonics |
- 36 dBm (< 1 GHz) |
| Modulation limiting |
± 2.5 kHz at 12.5 kHz |
| Noise cancellation |
40 dB at 12.5 kHz |
| Adjacent channel selectivity |
60 dB at 12.5 kHz |
| Audio sensitivity |
+ 1 dB to - 3dB |
| Nominal audio distortion |
≤ 3 % |
| Digital vocoder type |
AMBE +2™ |
Receiver
| Sensitivity (analog) |
0.28 μV (12 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 |
| Intermodulation |
TIA-603: 75 dB at 12.5 / 20 / 25 kHz |
| Spurious response rejection |
TIA-603:80 dB at 12.5 / 20 / 25 kHz |
| Signal-noise ratio (S/N) |
40 dB at 12.5 kHz |
| Nominal audio power output |
0.5 W |
| Nominal audio distortion |
≤ 3 % |
| Audio sensitivity |
+ 1 dB at - 3 dB |
| Conducted spurious emission |
< 57 dBm |
Environmental conditions
| Operating temperature range |
-30 °C to +60 °C |
| Storage temperature range |
-40 °C to +85 °C |
| Relative humidity |
< 95 % |
Features marked with * are available in future versions of the product.
All technical data were tested according to the respective standards. Due to continuing development, technical changes are reserved.
