Ld-c101 Usb To Ci-v Driver May 2026

If you need the circuit design paper:

Solution: USB power issue. Try a different USB port (preferably directly on motherboard, not a hub). Also, check your LD-C101 cable for shorts. Ld-c101 Usb To Ci-v Driver

A: Some unsigned driver installers trigger false positives. Verify the hash with the vendor’s official website. Silicon Labs drivers are safe. If you need the circuit design paper:

Before diving into drivers, let’s clarify the hardware. The LD-C101 is a USB interface cable designed primarily for Icom transceivers that use the CI-V (Communication Interface-V) protocol. IC-706, IC-7000, IC-718, IC-7300, and many other Icom models rely on this standard. Solution: USB power issue

The adapter converts USB signals from your PC into TTL-level serial signals required by the CI-V bus. Inside the plastic case of the LD-C101, there is typically a bridge chip—most commonly from Silicon Labs (CP210x family) or Prolific (PL2303 family).

Why the driver matters: Your operating system (Windows, macOS, Linux) does not inherently understand how to talk to this chip. The driver acts as a translator, creating a virtual COM port (VCP) that software like HRD, DXLab, or WSJT-X can use.

Solution: Driver conflict or RF interference. Move the USB cable away from the antenna feedline. Add ferrites. Also, disable Windows USB selective suspend:

  • Baud rate support: CI-V uses 4800 or 19200 bps commonly; adapter supports standard serial baud rates (from low to 115200+ depending on chipset).
  • Flow control: Typically no hardware flow control (CI-V is simple single-wire bus). Drivers expose RTS/CTS/DTR lines if chipset supports them.
  • Data framing: 8 data bits, no parity, 1 stop bit (8N1) commonly used for CI-V.
  • Compatibility with radio control software: Works with Ham Radio Deluxe, N1MM+, fldigi, WSJT-X, Icom's own RS-BA1/CI-V control apps, and custom scripts that open a serial port to send CI-V commands.