Questions tagged [radio-communication]

Using radio wavelengths to communicate between multiple spacecraft or between a spacecraft and the Earth.

This is not to be confused with using radio waves for astronomical research.

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Has any spacecraft ever had the ability to directly communicate with civilian air traffic control?

Should such a contingency become necessary, mission control centers have the ability to contact (e.g. by telephone) civilian or military air traffic control centers, even those located in other countries. Direct communication (i.e. not involving…
DrSheldon
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If a sitting President went to space on a USSF spacecraft, would the call sign be Space Force One?

If a sitting US President flew on a spacecraft operated by the US Space Force, would the spacecraft's call sign be Space Force One, analogous to Air Force One, Marine One, etc.? What if he flew on a private spacecraft? "Executive One" like a private…
Someone
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Why have four parabolas on a ground-side array instead of just a single large one

An article on RT: Russia to stop ferrying US astronauts to ISS from April 2019, is accompanied by a photo of a ground-side radio array consisting of four separate parabolas merged into one pointable element, seemingly tracking the ascending Soyuz.…
David Tonhofer
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At what distance does radio communication become unusable?

How far away from Earth could we reliably communicate using radio? I'm thinking that a primary factor would be how much RF power could be kept in a "tight beam" and accurately pointed. Assumotions: Users do not care about lag time between sending…
BradV
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