Why does my Kirisun DP485 Two-Way Radio fail to communicate?
Communication failures in your Kirisun Two-Way Radio can occur if the radios are not on the same frequency, if the radios use different CTCSS/DCS signaling codes (set the same one via PC), or if the radios are out of communication range.
What to do if my Kirisun Two-Way Radio won't start?
If your Kirisun Two-Way Radio fails to start, check the battery and charge or replace it if it's low. Also, the Power key might not work well, in this case replace the key. If the CPU does not work well, replace it with a new IC19.
What to do if I cannot receive signals on my Kirisun Two-Way Radio?
If you cannot receive signals on your Kirisun Two-Way Radio, it could be due to several reasons: * The antenna might have bad contact (screw up the antenna connector). * The sensitivity might be low (fine tune the debugging mode). * The squelch level might be too high (set a lower level via PC). * The Q3 might not work well (replace the 2SC3356).
What to do if my Kirisun Two-Way Radio has a red light on during transmitting, but the receiver hears no voice?
If your Kirisun Two-Way Radio shows a red light during transmitting but the receiver hears no voice, the tube power amplifier may not be outputting power (replace with a new amplifier), or the microphone may not be working well (replace with a new microphone).
What to do if my Kirisun DP485 Two-Way Radio has a green light on during receiving, but I cannot hear any voice?
If your Kirisun Two-Way Radio shows a green light during receiving but you cannot hear any voice, the speaker may not be working well (replace with a new speaker), or the audio amplifier IC5 may not be working well (replace with a new TDA8547).
How to fix low voice volume on Kirisun DP485 Two-Way Radio?
To fix low voice volume on your Kirisun Two-Way Radio, check the settings of volume and MIC gain via the PC Tool.
Why is communication failing on my Kirisun DP485?
If communication fails on your Kirisun Two-Way Radio, ensure that all radios are set to the same frequency channel. Also, verify that the radios use the same CTCSS/DCS signaling codes, setting it via PC if necessary. Finally, consider that you may be out of the communication range.
How to fix Kirisun Two-Way Radio when startup fails?
If your Kirisun Two-Way Radio fails to start, first check the battery. If the battery is low, charge or replace it. If the battery is not the problem, the power key may not work correctly and should be replaced. As a last resort, if the CPU is faulty, replace it with a new IC19.
What to do if Kirisun DP485 Two-Way Radio cannot receive signals?
If your Kirisun Two-Way Radio cannot receive signals, ensure the antenna connector is securely screwed in. If the antenna connection is good, fine-tune the sensitivity in the debugging mode. Also, verify that the squelch level is not too high by setting a lower level via PC. Finally, consider replacing the Q3 (2SC3356) if it's not working correctly.
Why is the red light on but no voice is heard on my Kirisun DP485 Two-Way Radio?
If the red light is on during transmitting on your Kirisun Two-Way Radio, but the receiver hears no voice, the tube power amplifier may not be outputting any power and needs replacement. Alternatively, the microphone may be faulty and require replacement.
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.
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 |
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