What's your first idea on beacon 1:20? Theory of relativity and length contraction must follow the rules?

r1=1; 3.14(1+x)=3.14; x=0; B=3.14+2S; a+b=x=0; 😃 1+x=r2; => r1=r2=r3; why? because of contraction of length 🙂 beacon emits by the speed of light and in these ratios 1:20 the signal is considered to be at place immediately 😛 oh, my new story... ^^^