Ensure the "CI-V Transceive" setting in your Icom radio's menu matches what your software expects (usually turned ON for logging programs).
Follow these steps to install the LD-C101 driver on Windows operating systems. 1. Download the Correct Driver
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.
The LD-C101 is not just a simple cable; its internal circuit board has been documented by hobbyists. The PCB contains unpopulated pads for an optocoupler connected to the DTR signal line. This allows advanced users to modify the cable by soldering in an optocoupler IC. This modification enables hardware-based Push-To-Talk (PTT) control directly from the computer's RTS or DTR line, which is a useful feature for digital modes on older ICOM radios that lack a CI-V PTT command. Additionally, the cable's design even includes the designer's amateur radio callsign (BD7JAO) on the board.
It's a good practice to install the driver software before physically connecting the hardware. Ld-c101 Usb To Ci-v Driver
Are you seeing any specific in your Device Manager?
But you will remember the night you fought it. The night you opened Device Manager, scrolled through hidden devices, deleted the ghost COM ports, rebooted, and finally heard the soft thunk of a serial connection establishing. For a few hours, you were not just an operator. You were a priest of the interface, a keeper of the bridge. And the LD-C101, silent and plastic and utterly indifferent, was your reluctant altar.
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
LD-C101 USB to CI-V Driver: Complete Guide and Troubleshooting Ensure the "CI-V Transceive" setting in your Icom
Match this to your radio's CI-V baud rate. While 9600 or 19200 bps are common defaults for older rigs, modern radios can handle up to 115200 bps for faster response times. Data Bits: 8 Stop Bits: 1 Parity: None
For , download the PL2303 Windows Driver Installer from the official Prolific Technology website. Step 2: Run the Installer Right-click the downloaded executable file. Select Run as administrator .
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
One popular hardware solution for this connection is the LD-C101 USB to CI-V cable. This guide provides everything you need to know about finding, installing, and troubleshooting the LD-C101 driver to ensure flawless rig control. What is the LD-C101 USB to CI-V Cable? Download the Correct Driver Kenji rewrote the ISR
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.
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:
USB power issue. Try a different USB port (preferably directly on motherboard, not a hub). Also, check your LD-C101 cable for shorts.
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
Once the driver is active, configure your software (such as Ham Radio Deluxe, WSJT-X, or N1MM Logger) to talk to your Icom radio. Required Software Settings