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How do you communicate with astronauts if radio waves are reflected back to earth?
Wiki User
∙ 14y ago
Radio signals at frequencies up to roughly 40 to 60 MHz are absorbed or reflected from the ionosphere. At higher frequencies, the signals easily penetrate the ionosphere and continue on into space. This is the reason that AM radio (1 MHz) and "short-wave" broadcasts (4-13 MHz) are often received from great distances, but TV (54 MHz and up) and FM radio (100 MHz) are not.
Wiki User
∙ 14y ago
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Radio waves bounce and return to earth?
The Radio waves are reflected back to Earth in the Ionosphere.
What does reflected power mean in cb radio terms?
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How do very long radio waves reach stations beyond the curvature of the Earth?
Radio waves, like all forms of electro magnetic radiation are affected by gravity, so the Earth's mass helps to bend the radio waves to an extent. Beyond that, radio waves can be reflected naturally by atmospheric conditions, but generally, when a radio signal needs to be transmitted a significant distance, it is done by a series of radio towers in relay.AnswerThe condition is called 'skip'. The waves bounce off the ionisphere and back to earth way past the curvature.
What level of atmosphere bounces off radio waves off of the earth?
Radio waves are in all parts of the atmosphere. Some, but not all, radio waves are reflected from the ionosphere, permitting transmission over greater distances.
How do ships today communicate with each other?
They communicate by two-way VHF radio.
How do astronauts communicate with people on earth?
i think they communicate by radio
How did astronauts communicate with earth while in space?
They communicated by radio.
How do people on earth communicate with astronauts in space?
People on Earth communicate with astronauts in space by a special radio and use the word houston like a secret spy code name to signify their calling
How did people communicate with Apollo 11?
The three astronauts communicated back to the earth with the help of the radio.
How do astronauts communicate in space?
They have radio.
Why do astronauts have radio transmitters when they are on moon?
So they can talk to each other and Earth, even though there is no air.Astronauts have radio transmitters on moon as they cannot communicate with each other.Sound cannot travel if there is no air. As there is no air on the moon astronauts need radio transmitters when they are on moon.
If astronauts communicate with earth while in space by using a radio then do they have a really big satellite dish?
Not necessary as because of technology, smaller devices have also started receiving radio waves.
How do we know that EM wave don't need a medium and can travel through vacuum?
Because of all the EM radiation we receive from the sun.Also . . .we can see the moonwe can see the sunwe can see other starswe can communicate by radio with astronauts on the moonwe can communicate by radio with the Curiosity on Marswe can communicate by radio with our space probes that have left the solar systemwe can bounce light and radio from Earth to moon and back to Earth
Why do astronauts talk on the radio?
That's the only way to communicate with sound where there is no air.
What type of wave is used to communicate with astronauts on international wave station?
radio wave
Do astronauts still use the radio to communicate or was it in the ancient days?
Firstly, neither astronauts or radio existed in ancient times. Secondly, radio has always been used by astronauts and continues to be so, because it is the only thing that works across the distances and through the vacuum.
How do you communicate to earth from space?
radio waves
