Type 277 radar
... that the Royal Navy's Type 277 radar was so successful that it served as the basis for Navy radars for years, and was used on land by the Royal Air Force and the British Army?
... that the <a href="./Royal_Navy" id="mwBIA" rel="mw:WikiLink" title="Royal Navy">Royal Navy</a>'s <b id="mwBIE"><a href="./Type_277_radar" id="mwBII" rel="mw:WikiLink" title="Type 277 radar">Type 277 radar</a></b> was so successful that it served as the basis for Navy radars for years, and was used on land by the <a href="./Royal_Air_Force" id="mwBIM" rel="mw:WikiLink" title="Royal Air Force">Royal Air Force</a> and the <a href="./British_Army" id="mwBIQ" rel="mw:WikiLink" title="British Army">British Army</a>?