 The aircraft carried the initial "B/C" form of the UHF-band Lichtenstein radar, so its existence was revealed to the Allies.RAF Bomber Command began to use a new form of "Window" (or chaff), aluminium strips sized to jam the Lichtenstein B/C radar when dropped.This brought about the need to deploy new night-fighting methods that no longer relied solely on AI radar until the longer wavelength, VHF-band "Lichtenstein" SN-2 radar could be produced for use in German night fighters.