▁engine ers ▁to ▁develop ▁jam ming ▁equipment ▁to ▁counter ▁it . ▁A ▁race ▁developed ▁with ▁the ▁Germ ans ▁attempting ▁to ▁introduce ▁new ▁sets ▁and ▁the ▁British ▁attempting ▁to ▁jam ▁them . ▁The ▁early ▁L ichten stein ▁B / C ▁was ▁replaced ▁by ▁the ▁similar ▁U H F - band ▁L ichten stein ▁C - 1 , ▁but ▁when ▁the ▁German ▁night ▁f ighter ▁defect ed ▁and ▁land ed ▁in ▁Scotland ▁in ▁April ▁ 1 9 4 3 , ▁that ▁rad ar ▁was ▁quickly ▁jam med . ▁The ▁low ▁V H F - band ▁SN - 2 ▁unit ▁that ▁replaced ▁the ▁C - 1 ▁remained ▁relatively ▁secure ▁until ▁July ▁ 1 9 4 4 , ▁but ▁only ▁at ▁the ▁cost ▁of ▁using ▁huge , ▁eight - d ip ole ▁element ▁Hir sch ge we ih ▁( stag ' s ▁ant lers ) ▁anten na e ▁that ▁slow ed ▁their ▁f igh ters ▁as ▁much ▁as ▁ 2 5   m ph , ▁making ▁them ▁easy ▁pre y ▁for ▁British ▁night ▁f igh ters ▁that ▁had ▁turned ▁to ▁the ▁off ensive ▁role . ▁The ▁capture ▁in ▁July ▁ 1 9 4 4 ▁of ▁a ▁Ju ▁ 8 8 G - 1 ▁night ▁f ighter ▁of ▁N J G ▁ 2 ▁equ ipped ▁with ▁an ▁SN - 2 ▁L ichten stein ▁set , ▁flow n ▁by ▁mistake ▁into ▁R AF ▁Wood bridge , ▁revealed ▁the ▁secre ts ▁of ▁the ▁later , ▁longer - w avel ength ▁replacement ▁for ▁the ▁earlier ▁B / C ▁and ▁C -