Frequency & Wavelength Flashcards
How fast does radio waves travel?
At the speed of light: 300,000,000 m/s or 3 x 10 (8)
OR
162,000 NM/s
What are radio waves used for?
Navigation, surveillance, communication
What is the relationship between frequency and wavelength?
Frequency (Hz) = Speed of light (m/s) ÷ Wavelength (m)
What is the frequency range of Very Low Frequency (VLF)?
3 KHz – 30 KHz
What is the frequency range of Low Frequency (LF)?
30 KHz – 300 KHz
What is the frequency range of Medium Frequency (MF)?
300 KHz – 3 MHz
What is the frequency range of High Frequency (HF)?
3 MHz – 30 MHz
What is the frequency range of Very High Frequency (VHF)?
30 MHz – 300 MHz
What is the frequency range of Ultra High Frequency (UHF)?
300 MHz – 3 GHz
What is the frequency range of Super High Frequency (SHF)?
3 GHz – 30 GHz
What is the frequency range of Extremely High Frequency (EHF)?
30 GHz – 300 GHz
What is the pattern to remember frequency bands?
3, 30, 300 → Change the Unit → 3, 30, 300
What is the wavelength range of Very Low Frequency (VLF)?
100 km – 10 km (Myriametric)
What is the wavelength range of Low Frequency (LF)?
10 km – 1 km (Kilometric)
What is the wavelength range of Medium Frequency (MF)?
1 km – 100 m (Hectometric)
What is the wavelength range of High Frequency (HF)?
100 m – 10 m (Decametric)
What is the wavelength range of Very High Frequency (VHF)?
10 m – 1 m (Metric)
What is the wavelength range of Ultra High Frequency (UHF)?
1 m – 10 cm (Decimetric)
What is the wavelength range of Super High Frequency (SHF)?
10 cm – 1 cm (Centimetric)
What is the wavelength range of Extremely High Frequency (EHF)?
1 cm – 1 mm (Millimetric)
