To expose recommend Probably cat5 to coax adapter leftovers Cafe Mosque
Can You Convert Coax to Ethernet? - ElectronicsHub USA
AX-703 BNC Male Balun Connector Adapter for Coax CAT5 to CCTV Surveillance Video
zdyCGTime Balun HD Cat5 RJ45 to BNC Video Baluns transceiver Passive with Power Connector for 720P 1080P 3MP 4MP 5MP HD-CVI/TVI/AHD/CVBS/960H Camera(2 Pairs) : Amazon.co.uk: DIY & Tools
2 Pack - DIRECTV Broadband Deca Ethernet to Coax Adapter - Third Generation (with 2 AC Power Supplies) - Walmart.ca