Which is equal to 28400 kHz?

To convert from kilohertz (kHz) to megahertz (MHz), you divide the value by 1,000. This is because the metric prefix 'kilo' means one thousand, and 'mega' means one million, making one megahertz equal to one thousand kilohertz. Mathematically, dividing by 1,000 is equivalent to moving the decimal point three places to the left. Starting with 28,400 kHz, moving the decimal three places to the left yields 28.400 MHz. This specific frequency is a popular operating frequency in the 10-meter amateur band. Distractors such as 2.800 MHz or 284.00 MHz are incorrect because they move the decimal point the wrong number of places. Always remember that the step between standard radio frequency prefixes (kilo to mega, mega to giga) is a factor of 1,000.