Icom Ci V Usb Interface Schematic Info

The schematic above omits D1 and D2 for simplicity, but in a robust design, D1 (anode to CI-V line, cathode to Q1 collector) prevents back-voltage when the radio is powered off, and D2 protects the PC’s RX pin from spikes.

Once soldered, plug in the USB. Your PC will detect a new COM port. Icom Ci V Usb Interface Schematic

Follow the full schematic above. Lay out components tightly. Use a 3.5mm stereo plug for the radio end: The schematic above omits D1 and D2 for

: Many modern Icom radios have a 3.5mm “REMOTE” jack – Tip = DATA, Sleeve = GND. Ring is unused or +V. but in a robust design