Hytera HM785 User Manual

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6. Call Services
When you are speaking during a call, keep the microphone 2.5 to 5 cm away from your mouth. This ensures optimal
voice quality on the receiving radio.
In trunking mode, if the radio is not registered or attached, or an empty group is selected, you cannot initiate a call.
6.1 Group Call
A group call is a call from an individual user in a group to all the other members in the group.
In trunking mode, with the Auto Select Available Site feature enabled by your dealer, the radio automatically
registers with an unrestricted BS for successful call establishment with the restricted group.
6.1.1 Initiating a Group Call
6.1.1.1 Conventional Mode
Through Preset Contact
Press and then rotate the Smart knob to select the digital channel.
Press and hold the PTT key.
Through Contact List
Do either of the following:

Press the preprogrammed Contact List or Favorite Contact List key.

Go to Menu > Contact > Favorite/Contact.
Select the group contact.
Press and hold the PTT key.
Through Manual Dialing
If the radio is connected to the palm microphone with keypad, do either of the following:

With the group call dial permission enabled by your dealer, on the home screen, enter the group ID, select Group
ID, and then press and hold the PTT key.

With the Keypad Mode feature enabled by your dealer, go to Menu > Settings > Basic Settings > Keypad Mode,
and then select On. On the home screen, enter the group ID, select Group ID, and then press and hold the PTT key.
The group ID must be complied with the dialing rules. For details, consult your dealer.

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)