What to do if green light is on but no voice on Kirisun DP485 Two-Way Radio?
If the green light is on during receiving, but you cannot hear any voice on your Kirisun Two-Way Radio, the speaker may not be working correctly and should be replaced. If the speaker is functional, the audio amplifier IC5 (TDA8547) may be faulty and require replacement.
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 |
Describes the intended use and scope of the manual for the DP485 radio.
Outlines safety measures for operating and handling the radio, including radiation and interference.
Details warranty conditions and paid maintenance services for the radio.
Provides a visual overview of the radio's external components and their labels.
Explains the functionality and configuration options for the radio's programmable keys.
Describes the different LED indications and their corresponding radio states.
Covers powering on/off, channel selection, volume adjustment, and initiating/receiving calls.
Presents the schematic diagram for the radio's main circuit board.
Shows schematic diagrams for RF, Baseband, TX, RX circuits, and the power section.
Provides descriptions and features of key integrated circuits used in the radio.
Explains the functions of stun, revive, and remote monitor features.
Describes how to enable, use, and configure channel scanning.
Explains the concept of zones for organizing channels.
Covers various radio settings like power, squelch, and tones.
Explains TOT and how to send and manage emergency alarms.
Describes how to set radio parameters using CPS software.
Instructions for upgrading the radio's firmware using the software tool.
Step-by-step guide for battery installation and removal.
Instructions for attaching and detaching the antenna.
Guide for mounting belt clip and using an external earphone.
Steps to remove the radio's outer shell and main board from its base.
Outlines debugging, adjustment components, PC test modes, and radio testing.
Provides a comprehensive list of the radio's technical specifications.
Lists the necessary equipment for maintaining and testing the radio.
Offers solutions for common problems and failures.
Defines common abbreviations used throughout the manual.
Lists electronic components for main and module boards across frequency bands.
Lists structural and mechanical parts for the radio.
Lists the accessories included with the radio.
Provides schematic diagrams for the main board.
Shows the top-layer and bottom-layer layouts of the main circuit board.
Provides schematic diagrams for the module board.
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