Hytera Communications MD78XIU1 Users Manual
UHF1 (400–470 MHz)
Contents
i
UHF1 (400–470 MHz)
Contents
UHF1 (400–470 MHz)
ii
Contents
1. Product Controls .................................................................................................................................. 1
2. Disassembly and Rea ssembly ............................................................................................................ 3
3. Exploded Vie w and Packing Guide .................................................................................................... 5
4. Specifications and Blind Spot ............................................................................................................ 8
5. Interface Definition ............................................................................................................................. 12
6. Tuning Descript ion ............................................................................................................................. 24
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1. Product Controls
Volume Control/Group Call Selector
Front Panel
UHF1 (400–470 MHz)
No. Part Name No. Part Name
1
Knob
2 LED Indicator 9 Down Key
3 LCD Display 10 Speaker
4 OK/Menu Key 11 Redial/Answer/Call Key
5 Back/Group Call Manage me nt Key 12 Programmable Keys
6 Dial-back/End/Home Screen Key 13 Microphone Connector
7 Power On/Off Key 14 Microphone Installation I ndex
8 Up Key
Note
The above-mentioned pr oduct control is based on the mobile radio in the trunking mode. In the
conventional mode, No. 1 ser ves as Volume Control / Channel Selector Knob, and No. 6 & No.11
serve as the Programmab le K eys.
UHF1 (400–470 MHz)
2
Rear Panel
No. Part Name No. Part Name
1 RF Antenna Connector 3 Accessory Connector
2 Power Inlet 4 GPS Antenna Connector
Note
The GPS antenna interfac e is only available for MD78XG.
UHF1 (400–470 MHz)
80
2. Disassembly and Reassembly
2.1 Disassembling the Radio
Step 1 Turn off the radio and remov e t he power cord, and loosen the two screws to remov e t he r adio.
Step 2 Remove the antenna.
Step 3 Loosen the three screws to r em ove the front panel. Then remove the FFC.
Step 4 Detach the volume control knob and loosen the four screws. Then remove the PC B from the
control panel.
Step 5 Undo the clips on both sides of the radio, and then remove the rear cover.
4
Step 6 Loosen the eleven screws t o r emov e t he upper shield cover.
UHF1 (400–470 MHz)
Step 7 Loosen the screw fixing th e ant enna co nne ctor and t wo scr ews f ixing th e P A modu le. Th en ta ke
the PCB out.
2.2 Reassembling the Radio
To reassemble the radio, per f orm the above steps in a reverse way.
UHF1 (400–470 MHz)
80
1
6300109000000
Aluminum chassis
1
27
6100334000000
O-ring for encoder switch
1
2
7500358000000
Heat sink pad
1 28
4399030000020
Rotary switch
1
3
6100492101000
Waterproof ring for front
case
1 29
41078001000J0
PCB for control panel
1
4
4210090000200
Signal cable
1 30
6100533101000
Waterproof ring for
aluminum chassis
1
5
5208010100010
Connector (male)
1 31
6300126000000
Upper cover of the
aluminum chassis
1
6
6001079000000
Light-guide plate for keys
1 32
7103015000000
Machine screw
11
7
7300048000000
Metal dome
1 33
6001080000000
Plastic upper cover
1
8
6100408001000
Waterproof ring for
microphone jack
1 34
6100496000000
Conductive silicone
rubber for main board
1
9
6100488000000
P+R front panel keys
1 35
7103008000400
Machine screw
2
10
6201893000000
Speaker fixing sheet
1 36
7500272000000
Heat sink pad
2
11
7102606021000
Self-tapping screw
6 37
/
Semi-finished PA with
heat sink pad
1
3. Exploded View and Packing Guide
3.1 Exploded View
Part list:
No. Part No. Description Qty. No. Part No. Description Qty.
UHF1 (400–470 MHz)
6
12
4210080000700
Speaker cable (with 2-Pin
plug)
1 38
3414999000020
PNP transistor
1
13
5001210000390
Speaker
1 39
/
Main PCB
1
14
7400297000000
Speaker felt
1 40
6100532100000
D_SUB waterproof ring
1
15
7102505000110
Machine screw
3 41
5208026100000
Jack
1
16
6001076000010
Front case for control
panel
1 42
6100530100000
Waterproof ring for power
socket
1
17
860P580600100
Logo
1 43
5205002100110
Power socket (male)
1
18
6201739000000
Inner lining for knob
1 44
3103994770150
Electrolytic capacitor
1
19
6000876000000
Encoder knob
1 45
7212002500000
Nut
1
20
6100493000000
Power on/off key
1 46
6100531100000
Waterproof ring for
antenna connector
1
21
6100404000000
Emergency key
1 47
4401000009000
BNC RF connector
1
22
7500344000000
PORON pad
1 48
6100494000000
GPS soft stopple
1
23
5130000000040
TFT LCD 2. 0" TFT
1 49
7500159000100
Thermal conductive
silicone rubber
2
24
6001078000000
LCD bracket
1 50
7500357000000
Heat sink pad
1
25
5202002100270
Board-to-wire connector
1 A
6100574100000
O_ring
11
26
7207003700000
Nut
1 B
7500344000000
PORON pad
1
No. Part No. Description Qty. No. Part No. Description Qty.
Note
Parts that are not mar ked with Part No. may vary with the radio frequency band.
80
3.2 Packing Guide
UHF1 (400–470 MHz)
8
4. Specifications and Blind Spot
4.1 Specifications
General
UHF1 (400–470 MHz)
Frequency Range
Channel Capacity 1024
Group Capacity 64 (each with a maximum of 16 c hannels)
Channel Spacing 12.5 kHz / 25 kHz
Operating Voltage 13.6V±15% DC
Current Drain
Frequency Stability ±2.5 ppm
Antenna Impedance 50 Ω
Dimension s ( H×W×D) 60 mm × 174 mm × 200 mm (2.4 inch × 6.9 inch × 7.9 inch)
400–470 MHz
Standby: <0. 6 A
Receive: <2.0 A
Transmit: 5 W: <5 A; 25 W: <8 A, 45 W: <12 A
Weight 1.7 kg (3.75 lbs)
LCD Display 220*176 pixels, 262000 colors, 2. 0-inch, 4 rows
Transmitter
Low: 1–25 W
Power Output
High: 1–45 W
Conducted/Radiated
Emission
FM Modulation
4FSK Digital Modulation 12.5 kHz (data only): 7K70FXD
Modulation Limit
-36 dBm <1 GHz
-30 dBm >1 GHz
10K1F3E@12.5 kHz
15K1F3E@25 kHz
±2.5 kHz@12.5 kHz
±5.0 kHz@25 kHz
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