microware TV-out Cable 1080P AV + HDMI To HDMI Converter with 3.5mm Headphone and Coaxial Stereo Audio - microware : Flipkart.com
Amazon.com: HDMI RF Modulator Coax Adapter 1080P Input Coaxial Output Converter with Male F Type Cord for Roku Fire Stick VCR PS3 PS4 PS5 Xbox Game Console Set-top Cable Box HD Digital
Connecting an antenna or cable TV (no box)
What is the coaxial port on a TV used for? - Quora