HM655

Mobile | DMR

Highlights

diagram indicating highlights of HM655

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

Created with Sketch. 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.

StayConnected-0x20 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

Created with Sketch. 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.

MIL-STD-20x20 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 Included as standard with HM655

Systems that work with HM655

Technical Specifications

General

Frequency Range
400-470MHz
Channel Capacity
512
Zone Capacity
16
Channel Spacing
12.5kHz/20kHz/25kHz
Operating Voltage
13.6V+15%
Frequency Stability
+0.5ppm
Antenna Impedance
50
Dimensions (H x W x D)
164 x 154 x 42mm
Weight
1100g

Receiver

Sensitivity
Analogue: 0.18uV (12dB SINAD)
Analogue: 0.16uV (12dB SINAD) (Typical)
Digital: 0.18uV/BER5%
Selectivity
TIA-603: 65dB@12.5kHz / 75dB@20/25kHz
ETSI: 70dB@12.5kHz / 20kHz / 25kHz
Inter-modulation
TIA-603: 75dB@12.5kHz / 20kHz / 25kHz
ETSI: 70dB@12.5kHz / 20kHz / 25kHz
Spurious Response Rejection
TIA-603: 75dB@12.5kHz / 20kHz / 25kHz
ETSI: 70dB@12.5kHz / 20kHz / 25kHz
Blocking
TIA-603:90dB
ETSI: 84dB
Hum and Noise
40dB@12.5kHz; 43dB@20kHz;45dB@25kHz
Related 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 -3dB
Conducted Spurious Emission
<-57dBm

Transmitter

RF Power Output
Low Power: 5-25W
High Power: 5-45W
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 -3dB
Audio Distortion
<3%
Digital Vocoder Type
AMBE+2

Enviornmental

Operating Temperature
-30C - +60C
Storage Temperature
-40C - +85C
ESD
IEC 61000-4-2 (Level 4)
+8kV (Contact); +15kV (Air)
American Military Standard
MIL-STD-810G Standard
Dustproof & Waterproof
IP54
Humidity
Per MIL-STD-810G Standard
Shock and Vibration
Per MIL-STD-810G Standard
GPS
GNSS
GPS,GPS+GLONASS,GPS+BDS