ITU Band nameAbbreviationFrequency and WavelengthHigh frequencyHF3–30 MHz 100–10 mVery high frequencyVHF30–300 MHz 10–1 mUltra high frequencyUHF300–3,000 MHz 1–0.1 mSuper high frequencySHF3–30 GHz 10–1 cmRadio spectrum – Wikipedia en.wikipedia.org › wiki › Radio_spectrum
Read moreWhat RF frequencies are harmful to humans?
Scientific evidence suggests that cancer is not only linked to mobile phone radiation and that other factors also may be involved in its development. Most mobile operators use from radiofrequency waves in the range up 300 MHz to 3 GHz that can be harmful for human health (1).
Read moreWhat is radio frequency used for?
Radio frequencies are used in communication devices such as transmitters, receivers, computers, televisions, and mobile phones , to name a few. Radio frequencies are also applied in carrier current systems including telephony and control circuits.
Read moreWhat is radio frequency and how does it work?
How radio frequency works. Radio frequency is measured in units called hertz (Hz), which represent the number of cycles per second when a radio wave is transmitted . One hertz equals one cycle per second; radio waves range from thousands (kilohertz) to millions (megahertz) to billions (gigahertz) of cycles per second.
Read moreWhat is radio frequency signal?
A radio frequency (RF) signal refers to a wireless electromagnetic signal used as a form of communication , if one is discussing wireless electronics. Radio waves are a form of electromagnetic radiation with identified radio frequencies that range from 3kHz to 300 GHz.
Read moreWhat devices use very high frequency?
Relevant high-frequency devices include modern computer processors, microwave devices based on magnetization dynamics , and mechanically resonant nanoscale systems. Effectively, these devices take a signal in, process or modify it, and send the signal out.
Read moreWho uses HF radio?
The band is used by international shortwave broadcasting stations (2.310 – 25.820 MHz), aviation communication, government time stations, weather stations, amateur radio and citizens band services , among other uses.
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