Kirisun DP485 User Manual

DP485 Service Manual
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6.5.Detaching Shell from the Base
Step 1. Detach the antenna.
Step 2.Detach the two knobs and circlips.
Step 3.Detach the two knob nuts and antenna nut.
Step 4.Detach the two screws fastening the belt clip.
Step 5.Insert the blade of a straight screwdriver into the battery slot of the aluminum-alloy holder, and prise
the holder upwards until it goes up.
Step 6.Hold the aluminum-alloy holder, draw the shell backwards, and then take out the flexible flat cable
from the extension socket.
6.6.Detaching Main Board from the Base
Step 1.Detach the two screws on the PTT PCB.
Step 2.Unscrew the seven bolts on the main board.
Step 3.Unsolder the antenna using a soldering iron (or take down the antenna connector nut), and then
separate the main board (including the PTT PCB) and the aluminum-alloy holder.

Kirisun DP485 Specifications

General

Frequency	136~174 MHz, 400~470 MHz
Channel Capacity	256 channels
Channel Spacing	25 kHz/12.5kHz
Antenna Impedance	50Ω
Operating Voltage	7.4V
Rated Power	1W 16Ω
Transmitting Power	4W/1W@7.4V DC
Current Consumption	≤1.5A@ 7.4V DC
Working Temperature	-25℃~ +55℃
Microphone Impedance	2.2kΩ
Battery	Lithium-ion battery DC 7.4V , 2000mAh
Receiving Sensitivity (12dB SINAD )	-120dBm
Squelch Sensitivity (3-level)	≤-120dBm
Selectivity of Adjacent Channels	70dB@25KHz /60dB@12.5KHz
Intermodulation Immunity	65dB@25KHz/12.5 KHz
Blocking	84dB
Frequency Stability	≤±2.5ppm
Maximum Modulation Offset	±5kHz@25KHz /±2.5kHz@12.5KHz
Modulation Distortion	≤3%
Spurious Emission	≤-36dBm