HM655
This new generation entry-level professional DMR mobile two-way radio is designed to provide reliable voice and data communication in both vehicles and desktop installations. It is compact and lightweight making it easy to install, with a convenient speaker microphone with a display. The radio is born to be your best partner in transportation, utilities and more. Click here to view the full H Series Range.
Highlights
Reliable Communication
Can deliver clear and dependable communications in areas where the signal is unstable or weak.
Wireless Connection
It can work with BT audio accessories to boost safety and productivity during in-vehicle communications.
Superior Durability
It withstands harsh temperatures, shock, and vibration, and meets MIL-STD-810G standards, and IP54 for dust and water intrusion.
On/Off Button
Remote Speaker Microphone with Display and Limited Keypad
to fully control the HM655, turn it on or off, switch channels or contacts, adjust the volume, or view messages.
Aviation Connector and Curly Cord
Strong and secure 10 pin aviation connector and curly cord with excellent stretching ability.
Functions
Reliable Communication
Thanks to the high RX sensitivity, the HM655 can deliver clear and dependable communication even in areas where the signal is weak or unstable.
Wireless Connection
With the built in BT 5.0 module*, the HM655 can work with the BT audio accessories to boost your safety and productivity during in-vehicle communication.*Please be advised that this feature is applicable to the BT HM655 version only
Handheld Control Head
The HM655 has a convenient Speaker microphone that has a display and controls which can be mounted in close proximity and allow you to turn on or off the radio, switch channels or contacts, adjust the volume.
Superior Durability
The HM655 withstands harsh temperatures, shock, vibration and meets the MIL-STD-810G standards. The device also features an IP54 rating against dust and water intrusion. The connection between the palm microphone and the 10-pin aviation connector is very secure preventing it from becoming loose. The palm microphone cord has excellent stretching ability to protect it thus giving the maximum service life.
Accessories for HM655
Included as standard with HM655
Antenna
Charger & Power
Cables
Mounting
Audio
Related products that work with the HM655
Technical Specifications
General
- Frequency range
- UHF: 400-470 MHz
- VHF: 136-174 MHz
- Channels & 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 x W x D)
- 164 x 154 x 42 mm
- Weight
- 1100g
- 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
- Operating temperature
- -30°C to +60°C
- Storage temperature
- -40°C to +85°C
- 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
GPS
- 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