Where are you getting these figures from? Your ass? Radio waves travel at the speed of light. All electromagnetic radiation (including light and radio) travels at the speed of light.
I'm watching Mythbusters right now as they systematically destroy the myths that the moon landing was a hoax, one by one.
Here is something for you all to think about. These claimes of light traveling at 186,000 MPS are based on VACUUM SPACE...not real space. These light tests are done in laboratories in IDEAL conditions. As electromagnetic waves travel in space (be it the atmosphere of earth or the atmosphere of space) it collides with all manner of matter be it DARK MATTER, free electrons, protons and neutrons, Neutrinos, other electromagnetic energies (natural light and radio waves), gravitational forces, not to forget planetary gravitation, gravitational anomolies etc etc. Given all of this...it is impossible for any kind of electromagnetic energy to maintain a constant speed. The analogy would be a sprinter running on the ground at top speed and then suddenly running in the ocean and somehow this runner would still be able to maintain the exact same speed...IMPOSSIBLE. So the same in space. There is masive amounts of 'INTERFERENCE" in space that would slow electromagnetic energy down considerably as well as deteriorate its strength.
Now here is another thought to consider. As a electromagnetic signal is sent out there must also be a part of that signal's energy slated for "pushing" that signal forward. Following the scientific logic (which is illogical to quote Spock) how can a signal be "pushed" forever without that portion of the energy of that signal responsible for the "push" being consumed/exhausted??? It is impossible. What essentially is being said is that somehow this 'PUSH" energy is perpetually replaced to keep the signal going despite all...
Any of you SMART ASSES can answer if you are so inclined...I expect rhetoric from Ozmo, Dan-O and hereford