RD985S (100W)

Repeaters & Systems | DMR


diagram indicating highlights of RD985S (100W)

User Friendly

The RD985S repeaters high-resolution display, programmable buttons and clear LED indicators make it easy-to-use either during ongoing operations or for maintenance tasks.

Wide Coverage

The transmission power on the RD985S dramatically broadens the networks communication coverage over large areas, thus reducing network investment.

Compact Design

The RD985S_100W high power amplifier still lends itself to a compact 2U structural design. Its flexibility and easy installation into various areas negates installation concerns.

High Cooling Capacity

The RD985S_100W amplifier is high efficient in its dissipation of the heat generated during operation. With the addition of an integrated fan system ensuring stable and powerful operation.


Created with Sketch. IP Multi-site Connection

IP network easily connects multiple RD985S repeaters in analogue and digital modes. This enables cost-effective, large coverage communication network to be deployed across multiple locations.

Created with Sketch. Mixed Mode Operation

RD985S series repeaters can support mixed channel mode to detect receiving signal, and automatically switch between analogue and digital.

Icon 24px Created with Sketch. Additional Applications

Hytera offers various applications enriching functionality of the RD985S series repeaters. For dispatching there is SmartDispatch or SamrtOne and forremote programming there is OTAP. Open API can be provided for third p[arty development.

ic_insert_link Created with Sketch. Back to Back Solutions

RD985S series repeaters can detect cross-band and cross-system communications in DMR Tier II through Hytera's Back-to-Back solution. When connected to a Hytera mobile radio, the RD985S repeaters enable a wireless connection between two systems when no IP link is available.

Icon 24px Created with Sketch. Smart Network Management

Hytera delivers XNMS as the professional network management platform for RD985S series repeaters. The XNMS can remotely monitor services, configure parameters and export statistics report for network diagnosis.

Accessories for RD985S (100W)

Included as standard with RD985S (100W) Included as standard with RD985S (100W)

Related products that work with the RD985S (100W)

Technical Specifications


Frequency Range
RD985S_100W: UHF1: 400-470MHz
Channel Capacity
Channel Spacing
Operating Voltage
RD985S_100W: 28V DC
Current Drain
Standby - RD985S_100W: ≤0.5A Transmit - RD985S_100W: ≤12.5A
Frequency Stability
Antenna Stability
Duty Cycle
Dimensions (HxWxD)
88 x 483 x 366 mm
LCD Display
220 x 176 pixels 262000 Colours, 2.0 inch, 4 rows


Analogue - 0.28μV (12dB SINAD); 0.22μV (Typical)(12dB SINAD); 0.4μV (20dB SINAD) Digital - 0.3μV/BER5%
Adjacent Channel Selectivity
TIA-603: 65dB @ 12.5kHz; 70dB @ 20/25kHz ETSI: 65dB @ 12.5kHz; 70dB @ 20/25kHz
TIA-603: 75dB @ 12.5/20/25kHz ETSI: 70dB @ 12.5/20/25kHz
Spurious Response Rejection
TIA-603: 80dB @ 12.5/20/25kHz ETSI: 80dB @ 12.5/20/25kHz
Hum and Noise
40dB @ 12.5kHz, 43dB @ 20kHz 45dB @ 25kHz
Rated Audio Power Output
Rated Audio Distortion
Audio Response
Conduct Spurious Emission


RF Power Output
RD985S_100W: 5-50W (adjustable
FM Modulation
11K0F3E @ 12.5kHz; 14K0F3E @ 20kHz; 16K0F3E @ 25kHz
4FSK Digital Modulation
12.5kHz Data Only: 7K60FXD; 12.5kHz Data &Voice: 7K60FXW
Conducted/ Radiated Emission
-36bBm < 1GHz; -30dBm > 1GHz
Modulation Limiting
± 2.5kHz @ 12.5kHz; ± 4.0kHz @ 20kHz; ± 5.0kHz @ 25kHz
FM Hum & Noise
40dB @ 12.5kHz; 43 dB @ 20kHz;45dB @ 25kHz
Adjacent Channel Power
60dB @ 12.5kHz; 70dB @ 20/25kHz
Audio Response
+ 1 ~ -3dB
Audio Distortion
≤ 3%
Digital Vocoder Type
Digital Protocol
ETSI-TS102 361-1,-2,-3

Environmental Specifications

Operating Temperature
Storage Temperature