What is high-frequency range?

High frequency (HF) is the ITU-designated range of radio frequency electromagnetic waves (radio waves) between 3 and 30 MHz . It is also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters (ten to one hundred metres).

Read more

What comes after SHF?

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 more