Hytera HM685 DMR mobile two-way radio UHF

Hytera HM685 Professional DMR Mobile Two-Way Radio UHF

The Hytera HM685 is a next-generation, entry-level professional DMR mobile two-way radio. It is designed to ensure reliable voice and data communication in both vehicular and desktop settings. Compact and lightweight, this radio is easy to install and operate.

Key Features:

• Reliable Communication: With high RX sensitivity, the HM685 delivers clear and dependable communications, even in areas with weak or unstable signals.
• Digital and Analogue Compatibility: Seamlessly switch between analogue and digital modes, allowing for an easy migration to digital with minimal disruption and investment.
• Innovative Design:
  • Compact and lightweight for easy installation and operation.
  • Two-shot molding on the front panel for recognizable operations.
  • Transflective display that remains readable in the dark or direct sunlight.
  • Four piano-style keys with excellent haptic feedback.
• Crystal-Clear Audio:
  • AI-based noise cancellation filters out echoes and background noise.
  • Howling suppression prevents screeching feedback between radios.
• Superior Durability:
  • Withstands harsh temperatures, shock, and vibration.
  • Meets MIL-STD-810G standards and IP54 for dust and water intrusion.
  • Secure connection between the palm microphone and the 10-pin aviation connector.
  • Durable microphone cord with excellent stretching ability.

Technical Specifications:

General

• Frequency range UHF: 400-470 MHz
• Channel capacity: 512
• Zone capacity: 16
• Channel spacing
  • Analogue: 12.5kHz/20kHz/25kHz
  • 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): 164 x 159 x 42 mm
• Weight: 1150 g
• Display: 1.45 inch, 4 lines
• Digital protocol: ETSI-TS102 361-1,-2,-3

Receiver

• Sensitivity
  • Analogue: 0.18µV (12dB SINAD)
  • Analogue (typical): 0.16µV (12dB SINAD)
  • 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
• 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

• 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