The software cannot find the radio. Check that the radio is turned on, the cable is pushed firmly into the jack, and that you have selected the correct COM port under the software's Communication Settings menu.

The USB-to-serial chip embedded inside the cable governs communication between your Windows PC and the radio. Most Kirisun systems rely on the CH341SER or Prolific driver architecture. If your PC fails to recognize the connected radio, it is often due to an outdated or incompatible USB driver. Windows may automatically install a generic update that blocks third-party serial chips, requiring you to manually downgrade or change your driver configuration to restore connectivity. Network Requirements for Repeaters

| Issue | Possible Solution | |---|---| | | Ensure the correct COM port is selected. Verify the cable is properly connected and the radio is powered on (if required). Try a different USB port or cable. Reinstall the driver. | | Error message: “FRE2BCD ERROR!” | This error, reported with KSP8100 v1.25, may indicate a frequency format mismatch or corrupted configuration. Re‑read the radio, reconfigure frequencies manually, and write again. | | Squelch remains open / constant hiss | After programming, the radio may hiss even with a high squelch level. Re‑check squelch settings; ensure a valid CTCSS/DCS tone is set on the channel. Also try a factory reset followed by a clean reprogram. | | Radio stops being recognized after programming (TM840, etc.) | This can occur when using CPS versions below v3.89—the port may be reset to the rear USB port. Upgrade to a newer CPS version or manually reassign the COM port. | | Cannot find correct programming cable | Different models require specific cables (e.g., KSPL‑U08 for PT6700‑01, KSPL‑U09/KSPL‑U28 for DP405/DP485 series, KSPL‑U21 for TM840). Verify cable compatibility before purchasing. | | CPS password forgotten | If a password was set and forgotten, the radio must be reset by an authorized service center. | | Software crashes on modern Windows | Try running the program in Windows compatibility mode (e.g., Windows 7 or XP). Alternatively, use a virtual machine with an older OS. |

Kirisun radio programming software is the essential between a radio’s hardware and the specific needs of a communication network. Whether you are managing a small security team or a large-scale industrial operation, understanding how this software functions is key to maintaining a radio system. Purpose and Functionality At its core, the software—often referred to as a Customer Programming Software (CPS) kirisun radio programming software

Tie the channel to a specific digital group call or private call ID created in your digital contacts folder. Step 3: Customizing Radio Features

Click on or Communication Port in the menu bar. Select the correct COM port assigned to your cable (you can verify this in the Windows Device Manager under "Ports (COM & LPT)").

Kirisun Radio Programming Software has a wide range of applications across various industries, including: The software cannot find the radio

Set privacy tones to filter out interference from other users on the same frequency.

| Component | Minimum Requirement | |---|---| | | Windows 7 and above (also supports Windows XP/8.1/10 for KSP20S and others) | | CPU | 2.0 GHz or higher | | RAM | 2.0 GB or more | | Hard Disk Space | 1 GB or more | | Graphics | Discrete graphics card with 1 GB+ memory recommended | | Display Resolution | 1920 × 1080 or higher | | Additional Software | Microsoft .NET Framework 4.5 (for some tools) | | Other Hardware | Sound card, speaker, microphone, USB port or COM port |

Right-click on "This PC" > "Manage" > "Device Manager." Look under "Ports (COM & LPT)" to see which COM port number (e.g., COM3) has been assigned to your cable. Step 3: Read the Radio Data Most Kirisun systems rely on the CH341SER or

Set up encryption keys or privacy codes to prevent unauthorized eavesdropping. Getting Started: Hardware & Software Requirements Before you begin, ensure you have the following components: 1. The Correct Programming Cable

Assign side keys to convenient actions, such as manual squelch bypass, zone switching, or high/low power adjustments. Step 4: Write Data Back to the Radio