Mastering the Icom CI-V USB Interface: A Deep Dive into Schematic, Topology, and DIY Construction

If you are drawing your own top-level schematic in KiCad:

Bill of Materials (Top-Level BOM)

Option 1 (FTDI Chip)

If you are building one from scratch today, is highly recommended.

This was the standard design in the 1990s and 2000s. It converts USB to RS-232 voltages (+/- 12V), and then converts that back down to TTL for the radio.

Interface Schematic Top: Icom Ci V Usb

Mastering the Icom CI-V USB Interface: A Deep Dive into Schematic, Topology, and DIY Construction

If you are drawing your own top-level schematic in KiCad:

Bill of Materials (Top-Level BOM)

Option 1 (FTDI Chip)

If you are building one from scratch today, is highly recommended. icom ci v usb interface schematic top

This was the standard design in the 1990s and 2000s. It converts USB to RS-232 voltages (+/- 12V), and then converts that back down to TTL for the radio. Mastering the Icom CI-V USB Interface: A Deep