Driver [repack] - Ld-c101 Usb To Ci-v

is a USB-to-3.5mm CI-V control cable designed for computer control of ICOM radios. To function correctly, the cable requires specific Virtual COM Port (VCP)

drivers to translate the USB signal into a serial communication line that radio software can understand. Chelegance Driver Specifications & Requirements Most modern LD-C101 cables utilize the FTDI (Future Technology Devices International)

chipset, though some variants may use Silicon Labs (SiLabs) or Prolific chips. Chipset Identification

: When plugged into a Windows computer, the cable typically appears in Device Manager under "Ports (COM & LPT)" as a "USB Serial Port". Official FTDI Drivers

: Because it acts as a standard serial interface, the latest stable drivers are generally sourced from the FTDI Chip VCP Drivers page Compatibility : Supports Windows 7, 8, 10, and 11.

: Drivers are often built into the Linux kernel (version 2.4.20 or greater). : Requires FTDI VCP drivers for Mac. Chelegance Hardware & Technical Profile

The LD-C101 serves as a replacement for the Icom CT-17 level converter, providing a direct link between a PC's USB port and a radio's CI-V jack. Chelegance Specification USB-A to 3.5mm Mono Plug Cable Length 1.5 meters (approx. 5 feet) Icom CI-V (TTL Level Serial) Typically 9600 or 19200 (Software dependent) Compatible Software Ham Radio Deluxe, N1MM, Logger32, WSJT-X Installation and Setup

The Go to product viewer dialog for this item. is a specialized USB-to-3.5mm control cable designed for Icom amateur radios using the CI-V (Computer Interface Five) protocol. It acts as a bridge, allowing your computer to manage radio frequencies, logging, and remote operations through standard ham radio software. Review Summary: LD-C101 USB to CI-V Cable Chipset

Uses the CH340 USB-Serial chipset (varies by manufacturer, but typically CH340). Radio Interface 3.5mm mono CI-V plug. Compatibility

Works with most Icom radios having a "Remote" or CI-V jack (e.g., IC-718, IC-706, IC-7300, IC-7610). Best For

Casual logging, contesting, and digital modes (like FT8 via CAT control). Performance & User Experience

Users generally find these cables to be a reliable and affordable alternative to the original Icom CT-17 interface.

Software Support: It is widely compatible with major ham radio suites like Ham Radio Deluxe (HRD), N1MM Logger+, Logger32, and FLRig.

Physical Build: Many versions feature molded plugs with integrated strain relief for better durability.

Operational Note: While it handles "CAT control" (frequency and mode changes) perfectly, it does not typically pass audio or control the PTT line on its own; you'll still need an audio interface (like a SignaLink or the radio's built-in USB audio) for digital modes. Driver & Installation Guide

typically relies on the CH340 chipset, which is usually "plug-and-play" on modern Windows 10/11 systems, though manual installation is sometimes required.

The story of the LD-C101 USB to CI-V Driver is a classic tale of high-stakes amateur radio engineering, where a simple $10 cable becomes the only thing standing between a modern computer and a vintage multi-thousand-dollar transceiver. The Protagonist: The IC-V Protocol The story begins in with Icom’s Computer Interface V (

) protocol. Designed long before USB existed, CI-V used a simple 3.5mm mono jack to transmit and receive data on a single wire. It was revolutionary, allowing operators to control their radios—changing frequencies, modes, and filters—directly from a computer terminal. The Conflict: The Great Port Vanishing

As the 2000s progressed, the serial ports (RS-232) that spoke the CI-V language vanished from laptops. Ham operators were left with a "communication gap." Enter the

, an aftermarket USB-to-CI-V "bridge" designed to translate modern USB signals back into the archaic logic levels of a 1990s Icom rig. The Deep Story of the Driver The "soul" of the LD-C101 is its CH340 chipset

. While many premium cables use expensive FTDI chips, the LD-C101 often utilizes the CH340, a workhorse serial-to-USB converter known for:

Establishing a stable connection between your PC and radio is the backbone of any digital ham shack. If you are using the LD-C101 USB to CI-V cable

, getting the right driver is the first step toward seamless rig control. 🛠️ The Core Hardware: Understanding LD-C101

The LD-C101 is a specialized interface cable designed to translate USB signals from your computer into the CI-V (Computer Interface Five) protocol used by Icom transceivers. Most versions utilize the Enables CAT (Computer Aided Transceiver) control. Compatibility: Ld-c101 Usb To Ci-v Driver

Works with software like Ham Radio Deluxe, WSJT-X, and fldigi. 💾 Driver Installation Guide

To ensure your computer recognizes the cable as a "USB Serial Port," follow these steps: 1. Identify Your Chipset Before downloading, plug the cable in and check Device Manager (Windows) or System Report FTDI Chip: The gold standard for stability. CH340 Chip: Common in budget-friendly cables. 2. Download the Official Drivers

Avoid third-party "driver updater" sites. Use the manufacturer's direct links: FTDI VCP Drivers: ftdichip.com WCH CH340 Drivers: wch-ic.com 3. Installation Steps the cable from your PC. the driver installer as Administrator. your computer. the LD-C101. Device Manager

under "Ports (COM & LPT)" to find your assigned COM port number. ⚠️ Troubleshooting Common Issues Error Code 10:

Usually indicates a "counterfeit" Prolific chip. If your LD-C101 uses Prolific, you may need an older driver version (v3.2.0.0). No Serial Port Found: Try a different USB port, preferably a port, as some CI-V bridges struggle with USB 3.0/3.1. Baud Rate Mismatch:

Ensure the Baud Rate in your software matches the setting in your radio’s menu (usually 9600 or 19200). 🚀 Optimized Rig Control Once the driver is active, you can unlock: Match your logging software to your VFO instantly. Digital Modes: Full integration for FT8, RTTY, and PSK31. Remote Op:

Control your radio from across the room or across the globe. Quick Tip: Always check your radio's CI-V Address in the internal settings. If the software is looking for but your radio is set to , the driver will work, but the radio won't respond! To help you get on the air faster, let me know: radio model (e.g., Icom IC-7300, IC-718) are you using? operating system is on your computer? Are you seeing a specific error message in your Device Manager?

3. Troubleshooting White Paper (Community Derived)

A useful summary paper from the Ham Radio .ru and eHam.net communities:

  • "Solving USB CI-V Adapter Driver Issues on Modern OS"
    • Key points:
      • Check USB VID/PID: 067B:2303 (Prolific) or 10C4:EA60 (Silicon Labs).
      • On Linux: Use brltty conflict fix (sudo apt remove brltty).
      • Baud rate: Must match radio (usually 19200 or 38400 for newer Icoms).

Where to find these documents:

  • Icom America → Downloads → CI-V Reference Guide (PDF)
  • Prolific.com.tw → Driver download includes .inf technical notes.
  • Silicon Labs → AN571 (CP210x Device Customization Guide)
  • GitHub Search: "LD-C101 driver fix" → User-contributed troubleshooting notes.

If you need a specific scientific paper (e.g., for citation), consider searching IEEE Xplore or Google Scholar for:
"USB to CI-V interface latency measurement" or "FTDI vs Prolific performance in radio control" – though none directly mention LD-C101.

Final practical tip: If drivers fail, replace the LD-C101 with a genuine USB-63C (Icom) or RigExpert CI-V – many LD-C101 clones use counterfeit Prolific chips that no longer have drivers on Windows 11.

is a USB-to-CI-V CAT (Computer Aided Transceiver) interface cable primarily used for controlling Icom amateur radios through a PC. Based on user technical reports, the cable typically uses the CH340 chipset

, which requires specific serial-to-USB drivers for Windows systems to recognize it as a Virtual COM Port (VCP). Technical Summary Primary Function

: Provides a communication bridge between a computer's USB port and the CI-V (Computer Interface 5) remote jack on Icom transceivers like the IC-706, IC-718, and IC-756. : Identified as the serial-to-USB bridge. Hardware ID

: Typically appears in Windows Device Manager as "USB-SERIAL CH340" under Ports (COM & LPT) once the driver is installed. Driver & Compatibility

While Icom provides official drivers for their own built-in USB interfaces (often based on Silicon Labs chipsets), third-party cables like the LD-C101 usually rely on generic chipset drivers.

Ld-c101 Usb To Ci-v Driver: A Comprehensive Guide

The LD-C101 USB to CI-V driver is a crucial software component that enables communication between a computer and a device that uses the CI-V (Controller Interface-V) protocol. This protocol is commonly used in various applications, including amateur radio, industrial control, and medical devices. In this article, we will explore the LD-C101 USB to CI-V driver in-depth, discussing its features, installation, and troubleshooting.

What is the LD-C101 USB to CI-V Driver?

The LD-C101 USB to CI-V driver is a software driver that allows a computer to communicate with a device that uses the CI-V protocol over a USB connection. The driver acts as a bridge between the computer's operating system and the device, enabling the exchange of data and commands. The LD-C101 is a specific model of USB to CI-V converter, and the driver is designed to work with this device.

Features of the LD-C101 USB to CI-V Driver

The LD-C101 USB to CI-V driver offers several key features that make it a reliable and efficient solution for CI-V communication:

  1. Compatibility: The driver is compatible with various operating systems, including Windows, macOS, and Linux.
  2. High-speed data transfer: The driver supports high-speed data transfer rates, making it suitable for applications that require fast communication.
  3. Easy installation: The driver is relatively easy to install, and the installation process is well-documented.
  4. Support for multiple devices: The driver can support multiple devices that use the CI-V protocol.

Installation of the LD-C101 USB to CI-V Driver

Installing the LD-C101 USB to CI-V driver is a straightforward process. Here are the general steps: is a USB-to-3

  1. Download the driver: Download the driver from the manufacturer's website or a reputable source.
  2. Run the installer: Run the installer and follow the on-screen instructions.
  3. Connect the device: Connect the LD-C101 USB to CI-V converter to the computer using a USB cable.
  4. Configure the device: Configure the device to use the CI-V protocol.

Troubleshooting Common Issues

While the LD-C101 USB to CI-V driver is generally reliable, issues can arise. Here are some common problems and their solutions:

  1. Driver not recognized: If the driver is not recognized by the operating system, try reinstalling the driver or updating to the latest version.
  2. Device not detected: If the device is not detected by the computer, check the USB connection and ensure that the device is properly configured.
  3. Data transfer issues: If data transfer issues occur, check the device configuration and ensure that the CI-V protocol is properly set up.

Applications of the LD-C101 USB to CI-V Driver

The LD-C101 USB to CI-V driver has various applications across different industries:

  1. Amateur radio: The driver is used in amateur radio applications to connect radios to computers for digital mode operation.
  2. Industrial control: The driver is used in industrial control applications to connect devices to computers for monitoring and control.
  3. Medical devices: The driver is used in medical devices to connect devices to computers for data transfer and control.

Conclusion

In conclusion, the LD-C101 USB to CI-V driver is a crucial software component that enables communication between a computer and a device that uses the CI-V protocol. The driver offers several key features, including compatibility, high-speed data transfer, and easy installation. By understanding the features, installation, and troubleshooting of the LD-C101 USB to CI-V driver, users can effectively utilize this technology in various applications.

FAQs

Here are some frequently asked questions about the LD-C101 USB to CI-V driver:

  1. What is the CI-V protocol?: The CI-V protocol is a communication protocol used in various applications, including amateur radio, industrial control, and medical devices.
  2. What is the LD-C101 USB to CI-V converter?: The LD-C101 is a specific model of USB to CI-V converter that enables communication between a computer and a device that uses the CI-V protocol.
  3. Is the LD-C101 USB to CI-V driver compatible with my operating system?: The LD-C101 USB to CI-V driver is compatible with various operating systems, including Windows, macOS, and Linux.

Resources

For more information about the LD-C101 USB to CI-V driver, users can refer to the following resources:

  1. Manufacturer's website: The manufacturer's website provides detailed information about the LD-C101 USB to CI-V driver, including documentation, downloads, and support.
  2. Online forums: Online forums, such as amateur radio forums or technical support forums, can provide valuable information and troubleshooting advice from experienced users.
  3. Technical documentation: Technical documentation, such as datasheets and user manuals, can provide detailed information about the LD-C101 USB to CI-V driver and its applications.

In the fluorescent-lit haze of the third sub-basement of Kuroda Electronics, Kenji Saito sat surrounded by the digital carcasses of two decades of radio technology. His employer, a now-defunct ham radio equipment manufacturer, had left him one final project: support legacy products no one remembered.

His current nemesis? The Ld-c101 USB-to-CI-V driver.

The CI-V protocol was Icom's arcane standard from the 1980s—a single-wire, asynchronous, half-duplex serial system that behaved like a sulky teenager. It worked when it wanted, dropped data when it felt ignored, and required precise timing down to the millisecond. The Ld-c101 was Kuroda’s budget attempt to let modern laptops talk to ancient Icom transceivers via USB. And it had never worked reliably.

Kenji's task: reverse-engineer the firmware, fix the driver, and produce a final update within two weeks. No source code remained. The original engineer, a woman named Hana Yoshida, had left under mysterious circumstances in 2005. Her only legacy was a cryptic comment buried in a long-dead forum: “The CI-V bus is like a queue at a rural post office. Everyone waits their turn, but some customers forget they already spoke.”

Kenji took a sip of vending-machine coffee, bitter as regret. He hooked the Ld-c101 to his logic analyzer. The USB endpoint descriptors checked out—vendor ID 0x1A86, a generic Chinese USB-to-serial chip. But the real logic was in the onboard PIC microcontroller, which translated USB bulk transfers to CI-V’s weird electrical levels.

He captured traffic between the Ld-c101 and an Icom IC-735. Every few commands, the radio would go deaf. Kenji zoomed in on the waveforms. There—a timing violation. The USB host sent a command, the Ld-c101 forwarded it to the CI-V bus, but the radio’s response came back while the Ld-c101 was still finishing its own transmission. In half-duplex land, that was chaos. The microcontroller wasn’t switching from transmit to receive mode fast enough. A classic race condition.

But fixing the PIC firmware required the original development environment. Kenji spent two days scouring old hard drives from Kuroda’s storage. Finally, in a box labeled “YOSHIDA - DO NOT DISCARD,” he found a Panasonic Toughbook running Windows 2000, with MPLAB IDE v5.0 and a parallel-port programmer.

He powered it on. The machine groaned like a waking bear. And there, on the desktop, was a folder: LD_C101_FW_SRC.

Inside, Hana’s assembly code. She had written comments in a mix of Japanese and English, often poetic. Near the timing loop, she’d scribbled: “We must delay 1.2ms after last TX bit before RX. But USB’s jitter eats our margin. Need dynamic calibration.”

Dynamic calibration. That was it.

Kenji rewrote the ISR. Instead of fixed delays, the PIC would measure the round-trip time of a dummy command at startup, then adjust its turnaround window based on the actual latency of the host USB stack. He added a small state machine to handle retries gracefully when collisions happened.

Flashed the new firmware. Plugged the Ld-c101 into his Linux laptop. dmesg showed the device. He ran minicom to the virtual serial port, typed 0xFE 0xFE 0x94 0xE0 0x03 0xFD—the CI-V command to read frequency.

The IC-735 replied: 0xFE 0xFE 0x94 0xE0 0x01 0x01 0x2D 0x40 0x00 0xFD. "Solving USB CI-V Adapter Driver Issues on Modern OS"

14.240 MHz. Perfect.

Kenji repeated the command one hundred times in a script. Every response arrived intact. No bus deafness. No dropped bytes.

He leaned back, the chair squeaking in the silence. Somewhere, Hana Yoshida might be smiling.

Two weeks later, he uploaded the final driver and firmware patch to Kuroda’s archived FTP site, with a note: “Works on Windows 98 through Windows 11, and any Linux kernel 2.6+. CI-V timing now self-calibrates on each connection. The post office queue now has a patient clerk.”

He never heard from a single user. But that was fine. In the world of legacy hardware, a perfect driver is like a tree falling in an empty forest—it makes no sound, but the forest stays upright.

Kenji shut off the sub-basement lights for the last time. Somewhere out there, a ham operator in a storm, connecting an old Icom to a cheap USB cable, would never know why their radio suddenly worked perfectly. They’d just call it luck.

And that, Kenji thought, was the highest praise a driver could receive.

The LD-C101 USB to CI-V cable is a specialized interface used by amateur radio enthusiasts to connect Icom transceivers to a computer for Computer-Aided Transceiver (CAT) control. This single-cable solution replaces the traditional, multi-component Icom CT-17 level converter setup, allowing you to manage frequency, mode, and filter settings directly through software like Ham Radio Deluxe or WSJT-X. Understanding the LD-C101 Interface

The LD-C101 acts as a bridge between your PC's USB port and the 3.5mm CI-V remote jack on your radio. CI-V Cable - IC706 - Groups.io

The LD-C101 USB to CI-V cable is a specialized interface designed to bridge Icom amateur radios with modern computers for CAT (Computer Aided Transceiver) control. While Icom's latest rigs often feature direct USB ports, the LD-C101 is an essential tool for older models, allowing you to manage frequency, mode, and memory settings through software like Ham Radio Deluxe or WSJT-X. Essential Features of the LD-C101

The LD-C101 functions as a digital bridge, converting your computer's USB signals into the CI-V (CIV) protocol used by Icom.

Plug-and-Play Design: Typically features a standard USB-A connector on one end and a 3.5mm mono jack for the radio's CI-V port.

Virtual COM Port (VCP): The cable uses an internal chipset—often from FTDI or Silicon Labs—to appear as a standard COM port on your PC.

CAT Control Support: Enables remote operation, frequency logging, and automated satellite tracking.

Power Efficient: Powered directly via the USB bus, eliminating the need for external power supplies. Driver Installation Guide

To use the LD-C101, you must install the correct Virtual COM Port (VCP) driver before connecting the cable to your PC. Icom ic-718 setup with CI-V cable on Windows 7? - Facebook

Method 1: Check the Hardware (Visual Inspection)

Look at the small circuit board inside the USB plug (if transparent) or search online for your seller’s listing. Common markings:

  • CP2102 (Silicon Labs) – Most reliable, easy to driver.
  • PL2303HX (Prolific) – Older, finicky with Windows 10/11.
  • CH340 (Chinese clone) – Requires specific CH340 drivers.

Q: My LD-C101 came with a mini CD. Should I use it?

A: No. CDs contain outdated, often malware-ridden drivers. Always download fresh.

Step 2: CI-V Address

Each Icom radio has a unique CI-V address (default is often 0x5E for IC-706, 0x88 for IC-7300). You must set your software to match the radio. If unsure, read your radio’s manual or set the radio to "ALL" or "00" for broadcasting.

For macOS:

  1. Manufacturer's Website: Again, start with the manufacturer's website.

  2. Driver Search: If a specific macOS driver isn't available, look for a more generic USB-to-serial driver, as many USB interfaces use FTDI chips which are recognized by macOS with a native driver.

  3. FTDI Driver: If your device uses an FTDI chip, you can download the driver from FTDI's website. FTDI provides VCP (Virtual COM Port) drivers for macOS.

  4. Installation: Follow the installation instructions provided with the driver.

  5. Verification: Check System Information (under Apple Menu > About This Mac > System Report) to see if your device is listed under USB or Ports.

For Prolific PL2303

  • Warning: Prolific has cracked down on counterfeit chips. If your LD-C101 uses a fake PL2303, Windows 10/11 may reject it.
  • Try: Prolific official driver v3.8.10 (for older OS) or v1.14.0 (for Win 11).
  • Alternative: Use a generic USB-to-serial driver from 2013 (but this is risky).