Author: The Paranoid (pd9f50a76.dip0.t-ipconnect.de)
Date: 04-25-2021 19:18
The Atari STE and Falcon030 have composite out but not in form of cinch connectors. The composite out is one line of the monitor socket. You need an appropriate cable, e.g. SCART.
You will find the monitor socket pin assignment easily with your preferred search engine.
The cinch connector on the STE and Falcon carries the RF modulated signal.