Frequency Letter-Band Nomenclature BandDescriptionFrequency RangeVLFVery low frequency3 KHz – 30 KHzLFLow frequency30 KHz – 300 KHzMFMedium frequency300 KHz – 3 MHzHFHigh frequency3 MHz – 30 MHzFrequency band designations – AH Systems www.ahsystems.com › notes › frequency band designations