High frequency

{
  "id": "MLC-T-MET-001282",
  "term": "High frequency",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A range of radio frequencies spanning from 3 to 30 megahertz (MHz). These frequencies are capable of long-distance propagation through reflection off the ionosphere, making them useful for global communication. In atmospheric science, high-frequency radar systems are employed for remote sensing of ocean surface conditions and ionospheric disturbances.",
    "The portion of the radio frequency spectrum between\nbetween 3 and 30 MHz"
  ],
  "abbreviation": "HF",
  "see_also": [
    "radio frequency band"
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/high-frequency/"
}