Lets say we are receiving radio wave signals from two points - [A] and . Point [A] is close to as. Point is somewhere in strong gravitation where clock_2 ticks 2 times slower then clock_1. [A]( clock_1 & emitter_1 ) --.. (we) --------........------......-----.....----.... ( clock_2 & emitter_2 ) Both emitters are controlled by their clocks. So emitter_2 will emit 2 times lower frequency. And later while the wave travels because of gravitational red shift the frequency will become additionally 2 times lower. So the total frequency coming from the emitter_2 will become 4 times lower. Am I right? If not then why?