Hytera HM785 User Manual

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8.12 Ignition Sense
The Ignition Sense feature controls the radio on or off and the PTT key enabled or disabled by starting or stopping
your vehicle.
Four types of ignition sense are listed in the following table. The default type is Disable Ignition Off, and other
types are enabled by your dealer.
Type Description Operation
I
gnition or Switch
Allows you to turn the radio on or
off by the
engine or the
On-Off key.

To turn the radio on, start the engine or long
press the On-Off key.

To turn the rad
io off, stop the engine or press
the On-Off key.
I
gnition Only
Allows you to turn the radio on or off
by the
engine.
To turn the radio on
or off, start or stop the engine.
PTT
Disable
Allows you to enable or disable the
PTT
key by the engine.
To enable
or disable the PTT key, start or stop the
engine.
D
isable Ignition
O
ff
Allows you to turn the radio on
by the
engine or the
On-Off
key, and allows you to
turn the radio off only by the
On-Off key.

To turn the radio on, start the engine or long
press the On-Off key.

To turn the radio off, press the On-Off key.
8.13 Public Address
The Public Address feature allows you to address public through the external speaker (connected to the accessory
connector on the rear panel).

To enable the feature, press the preprogrammed Public Address key.

To disable the feature, press the preprogrammed Public Address key again.
8.14 Priority Interrupt
The Priority Interrupt feature allows you to interrupt the ongoing activities (such as a call, a call hang status or
remote monitor) on the current channel to release it: therefore, you can initiate a new call or a new data service on
that channel. This feature includes manual priority interrupt and auto priority interrupt.

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)