Which frequency range defines the LF band?

Which frequency range defines the LF band?

• A. 3-30 KHz
• B. 30 to 300 KHz
• C. 300 kHz - 3 MHz
• D. 30-300 MHz

Answer: (B)

Low Frequency is defined as 30 kHz to 300 kHz. This part of the spectrum sits at the low end, yielding long wavelengths (roughly 10 km down to 1 km), which favors ground-wave propagation over long distances and supports lower data rates. Because of these characteristics, LF is used for specialized, long-range communications rather than high-bandwidth links. The other ranges correspond to different bands: 3–30 kHz is typically considered Very Low Frequency, 300 kHz–3 MHz is Medium Frequency, and 30–300 MHz is Very High Frequency. Therefore, the LF band is 30 to 300 kHz.

Low Frequency is defined as 30 kHz to 300 kHz. This part of the spectrum sits at the low end, yielding long wavelengths (roughly 10 km down to 1 km), which favors ground-wave propagation over long distances and supports lower data rates. Because of these characteristics, LF is used for specialized, long-range communications rather than high-bandwidth links. The other ranges correspond to different bands: 3–30 kHz is typically considered Very Low Frequency, 300 kHz–3 MHz is Medium Frequency, and 30–300 MHz is Very High Frequency. Therefore, the LF band is 30 to 300 kHz.