Hytera HM785 User Manual

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4. Basic Operations
4.1 Turning On or Off the Radio

To turn on the radio, long press the On-Off key.

To turn off the radio, press the On-Off key.
4.2 Adjusting the Volume
To increase or decrease the volume, rotate the Smart knob clockwise or counter-clockwise.
4.3 Switching the Operation Mode
The radio can operate in conventional mode, or digital/analog trunking mode (enabled by your dealer).
To manually switch the operation mode, do one of the following:

Go to Menu > Mode, press the Navigation key up or down to select the mode, and then press the OK/Menu key.

Press the preprogrammed Operation Mode Switch key.
To allow the radio to automatically switch to a mode based on signal strength, do one of the following:

Go to Menu > Mode > Auto Switch, and then press the OK/Menu key to enable Auto Switch.

Press the preprogrammed Mode Auto Switch key.
4.3.1 Conventional Mode
In conventional mode, a zone is a group of channels within the same operational area. The radio receives and transmits
data and voice on the selected channel after you select a zone and channel. Before selecting a channel, ensure that the

Hytera HM785 Specifications

General

Channel Capacity	1024
Operating Voltage	13.6 V ± 15%
GPS	Yes
Bluetooth	Yes
Channel Spacing	12.5/20/25 kHz
Operating Temperature	-30°C to +60°C
Frequency Stability	±0.5 ppm
Antenna Impedance	50 Ω
Modulation Limiting	±2.5 kHz @ 12.5 kHz; ±4.0 kHz @ 20 kHz; ±5.0 kHz @ 25 kHz
Audio Distortion	≤3%
Intermodulation	≥65dB
Spurious Response Rejection	≥70dB
IP Rating	IP54
Frequency Range	UHF: 400-527MHz
Display	2.4-inch
Digital Protocol	DMR
FM Hum & Noise	≥40dB
Adjacent Channel Power	≥60dB
Audio Response	+1~-3dB
Conducted & Radiated Emission	-36dBm ＜1GHz; -30dBm ＞1GHz
Adjacent Channel Selectivity	≥60dB
Zone Capacity	64 (each with a maximum of 256 channels)
Sensitivity (Analog)	0.22 μV (12 dB SINAD)