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activity 5 Illustration the two kinds of pitch/frequency ​

Activity 5 Illustration The Two Kinds Of Pitchfrequency class=

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  • High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz).
  • Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. 

Explanation:

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