The Hytera HM685 DMR mobile is a cutting-edge, professional two-way radio designed to meet the needs of businesses in various industries. Whether you’re working in a crane on a construction site or travelling in a vehicle, you can rely on the HM685 to deliver clear communication, ensuring efficiency and safety at all times with its robust features and durable construction.
One of the standout features of the HM685 is its advanced voice clarity technology. With dual mic noise suppression and intelligent audio, this radio delivers crystal clear audio, even in noisy environments.
Whilst the DMR mobiles large, colour display and intuitive user interface make navigation a breeze, even in low-light conditions. The radio also has a built-in GPS module, allowing for real-time tracking and location-based services.
Top features of the HM685 mobile.
Reliable communication:
Experience clear and reliable communication. Equipped with high RX sensitivity, the HM685 device ensures uninterrupted communication even in areas with unstable or weak signals. Stay connected and confident no matter the circumstances.
Ergonomic design:
With its compact and lightweight design, the HM685 is incredibly easy to install, remove, or operate in any vehicle. The front panel is designed with two-shot moulding, making the controls easily recognisable for intuitive operation. The transflective display ensures optimal visibility, even in challenging lighting conditions. Additionally, the four piano-style keys provide excellent haptic feedback for a seamless user experience.
Wireless connection:
Enhance your safety and productivity during in-vehicle communications with the built-in BT 5.0 module*. Pair the HM685 with BT audio accessories for an enhanced communication experience.
Eliminate background noise:
The HM685 is designed to deliver superb audio quality, even in the presence of background noise. With AI-based noise cancellation technology, echoes and unwanted sounds such as horns and engine noises are filtered out, ensuring clear conversations. Additionally, the howling suppression feature prevents screeching or howling feedback between two radios in the same area, allowing for uninterrupted and crystal-clear communication on the move.
Extreme durability:
Count on the HM685 to withstand harsh conditions. This device is built to meet MIL-STD-810G standards, ensuring its durability against temperature variations, shocks, and vibrations. Additionally, it is IP54-rated for dust and water intrusion, offering protection and peace of mind. The secure connection between the palm microphone and the 10-pin aviation connector prevents any looseness, while the palm microphone cord is designed with excellent stretching ability, ensuring a long-lasting and reliable performance.
Technical specifications of Hytera HM685 radio.
General
Frequency band
UHF: 400-470 MHz
VHF: 136-174 MHz
Channel & zones
Channel capacity: 512
Zone capacity: 16
Channel spacing analogue
12.5kHz/20kHz/25kHz
Channel spacing digital
25kHz
Operating voltage
13.6 V DC ±15%
Current drain
standby: <0.5 A
receive: <2.0 A
transmit 5W: <4 A
transmit 25W: <8 A
transmit 45W: <12 A
Frequency stability
+0.5 ppm
Antenna impedance
50 Ohm
Dimensions (H×W×D) mm
164 x 159 x 42mm
Weight
1150g
Display
1.45 inch, 4 lines
Digital protocol
ETSI-TS102 361-1,-2,-3
Receiver
Sensitivity
Analogue: 0.18µV (12dB SINAD)
Analogue: 0.16µV (12dB SINAD) (typical)
Digital: 0.18µV / BER 5%
Selectivity
TIA-603: 65dB @12.5kHz / 75dB @20/25kHz
ETSI: 50 dB @12.5kHz / 70dB @20/25kHz
Inter-modulation
TIA-603: 75dB @12.5/20/25kHz
ETSI: 70dB @12.5/20/25kHz
Spurious Response Rejection
TIA-603: 75dB @12.5/20/25kHz
ETSI: 70dB @12.5/20/25kHz
Blocking
TIA-603: 90 dB
ETSI: 84 dB
Hum and Noise
40dB @12.5kHz; 43dB @20kHz; 45dB @25kHz
Rated Audio Power Output
internal (20 Ohm load): 3W
external (8 Ohm load): 6W
Max Audio Power Output
internal (20 Ohm load): 7.5W
external (8 Ohm load): 20W
Rated Audio Distortion
<3%
Audio Response
+1 to -3 dB
Conducted Spurious Emission
< -57 dBm
Transmitter
RF Power Output
Low Power model: 5-25 W
High Power model: 5-45 W (UHF); 5-50 W (VHF)
FM Modulation
11K0F3E @12.5kHz
14K0F3E @20kHz
16K0F3E @25kHz
4FSK Digital Modulation
12.5kHz data only: 7K60FXD
12.5kHz data and voice: 7K60FXW
Conducted/Radiated Emission
-36dBm @<1GHz; -30dBm @>1GHz
Modulation Limiting
±2.5kHz @12.5kHz; ±4.0kHz @20kHz; ±5.0kHz @25kHz
FM Hum and Noise
40dB @12.5kHz; 43dB @20kHz; 45dB @25kHz
Adjacent Channel Power
60dB @12.5kHz; 70dB @20/25kHz
Audio Response
+1 to -3 dB
Audio Distortion
<3%
Digital Vocoder Type
AMBE+2
Environmental Specifications
Operating temperature
-30℃ to +60℃
Storage temperature
-40℃ to +85℃
ESD
IEC 61000-4-2 (level 4)
+8kV (contact); +15kV (air)
American Military standard
MIL-STD-810G
Dust & water protection
IP54
Humidity
per MIL-STD-810G standard
Shock and vibration
per MIL-STD-810G standard
Location Service
GNSS
GPS, GPS+GLONASS, GPS+BDS
TTFF (time to first fix) cold start
< 1 minute
TTFF (time to first fix) hot start
< 10 seconds
Horizontal accuracy
< 5 meters
Download the Hytera HM685 DMR mobile radio manufacturer’s specification PDF.
Enhance your Hytera radio system with software applications.
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