The UK had longer wavelength radar on aircraft before the US entered the war, the biplane attack planes flying off carriers looked old-fashioned but they could

The UK had longer wavelength radar on aircraft before the US entered the war, the biplane attack planes flying off carriers looked old-fashioned but they could find their targets at night and land safely again. To circle back to the subject of the thread, after WWII my grandfather was in charge of the research lab at Metrovick, his final job before retirement was to close it down.