The reason that most SETI programs choose to listen at microwave radio frequencies is that microwaves are the most energy-efficient way to send information.
What is radio frequencies?
- Radio frequencies are used in transmitters, receivers, computers, televisions, mobile phones and other communication devices.
- Radio frequencies are also used in carrier current systems such as telephones and control circuits.
- In 2021 ARPANSA will publish the standard.
- Standards for limiting exposure to radio frequency fields - 100 kHz to 300 GHz.
- The ARPANSA RF standard specifies limits for human exposure to RF EMR in the frequency range 100 kHz to 300 GHz.
- Microwaves have a frequency range of 109 Hz (1 GHz) to 1000 GHz and corresponding wavelengths of 30 to 0.03 cm.
- Within this spectrum range there are many important communication system applications in both military and civilian settings.
To learn more about radio frequencies from the given link :
https://brainly.com/question/14400059
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