ANSWERS: 2
  • It's the frequency, measured in Hertz, meaning (radio)waves per second
  • AM runs from 530 to 1700 kHz, FM from 88 to 108 MHz. Shortwave is 3-30 MHz, and longwave 150-250 kHz. Nearly all radios have AM and FM, some have shortwave, and a few have longwave.

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