A light source emits a series of pulses the distance between which is d (e.g. d=300000km) towards the observer/receiver. Relative to the observer/receiver, the pulses have speed c and the frequency the observer/receiver measures is f=c/d, where d is the distance between the pulses:

http://www.einstein-online.info/imag...ler_static.gif

It takes not just insanity but cretinism to believe that, as the observer starts moving away from the light source, the light pulses start hitting him less frequently (the frequency he measures decreases) not because the speed of the pulses relative to the observer has decreased from c to c'=c-v (in violation of special relativity), but because the distance between the pulses has increased from d to d'=cd/(c-v), Divine Einstein, yes we all believe in relativity, relativity, relativity:

http://www.einstein-online.info/imag...tector_red.gif

http://www.youtube.com/watch?v=SC0Q6-xt-Xs
"Doppler effect - when an observer moves away from a stationary source. ....the velocity of the wave relative to the observer is slower than that when it is still."

Sane scientists know that the decrease in frequency can only be caused by a decrease in the speed of light relative to the observer:

http://www.cmmp.ucl.ac.uk/~ahh/teach...24n/lect19.pdf
Tony Harker, University College London: "The Doppler Effect: Moving sources and receivers. The phenomena which occur when a source of sound is in motion are well known. The example which is usually cited is the change in pitch of the engine of a moving vehicle as it approaches. In our treatment we shall not specify the type of wave motion involved, and our results will be applicable to sound or to light. (...) Now suppose that the observer is moving with a velocity Vo away from the source. (....) If the observer moves with a speed Vo away from the source (...), then in a time t the number of waves which reach the observer are those in a distance (c-Vo)t, so the number of waves observed is (c-Vo)t/lambda, giving an observed frequency f'=f(1-Vo/c) when the observer is moving away from the source at a speed Vo."

If in a time t the number of waves which reach the observer are those in a distance (c-Vo)t, then the speed of the light waves relative to the moving observer is c'=c-Vo, in violation of special relativity.

Einstein's relativity is obviously idiotic and the "embarrassing question of why this had not been noticed earlier" is not just embarrassing - it sounds like a criminal accusation:

http://www.informaworld.com/smpp/con...ent=a909857880
Peter Hayes "The Ideology of Relativity: The Case of the Clock Paradox" : Social Epistemology, Volume 23, Issue 1 January 2009, pages 57-78: "The gatekeepers of professional physics in the universities and research institutes are disinclined to support or employ anyone who raises problems over the elementary inconsistencies of relativity. A winnowing out process has made it very difficult for critics of Einstein to achieve or maintain professional status. Relativists are then able to use the argument of authority to discredit these critics. Were relativists to admit that Einstein may have made a series of elementary logical errors, they would be faced with the embarrassing question of why this had not been noticed earlier. Under these circumstances the marginalisation of antirelativists, unjustified on scientific grounds, is eminently justifiable on grounds of realpolitik. Supporters of relativity theory have protected both the theory and their own reputations by shutting their opponents out of professional discourse."

Pentcho Valev