Hellow guys, Welcome to my website, and you are watching World's First RADAR System: "CHAIN HOME" Vacuum Tube #military #ww2 #vintage #technology #unboxing. and this vIdeo is uploaded by Ordnance at 2024-01-09T10:03:33-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.