HM788

Mobile | DMR

Highlights

diagram indicating highlights of HM788

2.4-inch screen

simple UI interaction assists in operating quickly

Built-in BT 5.0

allows wireless accessory adaptation and data transmission

Built-in speaker

assures clear and loud voice even without an external speaker

Accessory Port

Functions

Created with Sketch. More Flexible

Flexible control heads and accessories allow installation according to the users requirements with a cable length of up to 40m .

Created with Sketch. Clearer Audio

Adopts AI noise cancellation technology to filter out background noise (such as road noise), eliminate echoes, enhance speech and reduce howling when in close proximity to the transmitting radio. With this technology, the mobile radio provides crisper and clearer audio when transmitting and receiving voice calls.

Created with Sketch. More Reliable

Improved receiver sensitivity improves audio quality in weak signal areas to provide clearer audio

Created with Sketch. Rich Scalable Application

Supports multiple connections through BT,and the accessory and network (Ethernet) ports. It also supports Clarity Transmission and back to back connections which will greatly facilitate your solutions.

HM780 Product Video

Accessories for HM788

Included as standard with HM788 Included as standard with HM788

Systems that work with HM788

Technical Specifications

General

Frequency Range
UHF: 350-470 MHz VHF: 136-174 MHz
Channel Capacity
1024
Operating Voltage
+13.6v ± 15%
Dimensions(W×H×D)
61.5 x 177 x 179 mm
Weight
1520g
Display
2.4 inch LDC display

Receiver

Sensitivity
Analogue: 0.18µV (12dB SINAD)
Analogue: 0.16µV (12dB SINAD) (typical)
Digital: 0.18µV / BER 5%
Selectivity
TIA-603: 60dB @12.5kHz / 70dB @20/25kHz
ETSI: 60 dB @12.5kHz / 70dB @20/25kHz
Inter-modulation
TIA-603: 70dB @12.5/20/25kHz
ETSI: 70dB @12.5/20/25kHz
Spurious Response Rejection
TIA-603: 70dB @12.5/20/25kHz
ETSI: 70dB @12.5/20/25kHz
Blocking
TIA-603: 80 dB
ETSI: 84 dB
Hum and Noise
40dB @12.5kHz; 43dB @20kHz; 45dB @25kHz
Related Audio Power Output
internal (20 Ohm load): 3W
external (8 Ohm load): 7.5W
Max Audio Power Output
internal (20 Ohm load): 8W
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 UHF: 1-25W; VHF: 5-25W
High Power UHF: 1-45W; VHF: 5-50W
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
Digital protocol
ETSI-TS102 361-1,-2,-3,-4

Environmental Specifications

Dust & Water Intrusion
IP54

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