4K HDMI Over Coaxial Extender up to 330 Feet - 4K@60Hz Over 75 Ohm RG-
Monoprice Digital Coaxial (RCA) to S/PDIF (Toslink) Digital Optical Audio Converter - Monoprice.com
Toslink/Coaxial Bi-directional Audio Converter
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Audio Extractor S/PDIF Optical Toslink, Digital Coaxial and Analog 3.5mm Stereo Output
Amazon.com: Optical-to-Coaxial OR Coaxial-to-Optical Digital Audio Converter, ROOFULL Bi-Directional Digital Coaxial to/from Optical Toslink SPDIF Audio Converter/Adapter/Repeater : Electronics
1080p HDMI over Coax Daisy Chain Extender 900FT Receiver Only (JTECH-EXC900R) - J-Tech Digital
HDMI to Coaxial RF Converter for Old TV - HDMI in Coax Out Transmitter Box with F Type Male to PLA 9.5mm Coaxial Cable & Remote Control Zoom Function 1080P Input Analog