civilizations capable of sending out broadcast messages that we could possibly detect across interstellar distances would have to be technologically advanced and would probably be much more advanced than we are. that makes it difficult to decide what sort of signals they would send. the seti program has decided to listen for microwave signals rather than more exotic types of signals (such as laser light, gamma rays, neutrinos, gravitational waves, etc.). the main reason for this choice is that

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27-10-2022
Physics

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civilizations capable of sending out broadcast messages that we could possibly detect across interstellar distances would have to be technologically advanced and would probably be much more advanced than we are. that makes it difficult to decide what sort of signals they would send. the seti program has decided to listen for microwave signals rather than more exotic types of signals (such as laser light, gamma rays, neutrinos, gravitational waves, etc.). the main reason for this choice is that

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Qwrat Qwrat · Answer 1 · 2022-11-02T07:57:20-04:00

For a given amount of energy utilized to create the signal, a microwave transmission can transmit the most data.

In order to provide high speed wireless connections that can send and receive audio, video, and data information, microwave is a line-of-sight wireless communication technique.

Highly directional antennas are used for line-of-sight propagation channels in terrestrial microwave transmission employing frequencies in the 4- to 12-GHz range. Depending on their spacing, the antennas' diameters can range from 12 inches to several feet and are often parabolic.

A series of microwave radio antennas make up this microwave link. They are found atop towers at various microwave locations. A communication system called a microwave link uses radio signals as a bridge to convey data between two or more fixed locations. A microwave network is composed of several microwave links.

Mobile cell towers and mobile phones communicate with one another via radio waves and microwaves, respectively. Because they can penetrate the atmosphere, microwaves are used. This signal can be transmitted to a satellite and used for global communication (more than one satellite is required for this).

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