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[????] RF (radio frequency) ; ???? ?????
The Wayback Machine - https://web.archive.org/web/20120104233420/http://terms.co.kr/RF.htm

RF (radio frequency) ; ???? ?????

???? ???????? ????, ??????? ?????? ????? ?????? ?? ???? ?????? ???? ?????? ????????? ??????? ????? ???? ?????? ???????. ????? ????? ???? ???? ???? ???? ???? ???? ????? (????? ???? ?? ??? ???? ???? ????)?? 9 kHz ?κ??? ??o GHz ???? ???? ???????ν? ????? ??? ????????? ????? ?κ??? Ŀ?????.

???? ????? ?????? ??????? ???????? ??, ?????? ???? ?????? ????????? ????????. ?? ???? ???? ???? ????? ?????? ?????, ??????? ??????? ?? ?? ???? ???δ? "??????"???? ?θ???. ???? ????????? ???? ?????? ??????? ???? ???? ???´?. ???? ??????? f ????? ?????? s ?? ???,

s = 300/f

?? ???. ???? ????? ????? ????? ???? ??????? ??? ???????. 9 kHz???? ???????? ?????? ?? 33 km???. ???? ???? ???? ??????????? ????? ?????? ?? 1 mm ???????. ???? ????? ????????? ??? ??????? ??????? ????, ????? ???????? ?????, ???n???, ????(UV), X ??, ????? ?????? ???? ???¸? ???´?.

???? ????? ??κ??? ???´? ???? ????? ??? ??????. ??? ???? ????? ??????, ???? ?? TV ????, ??????? ?y???, ????? ????? ?????? ???? ??? ???? ????? ??????? ?????? ??????. ??? ???? ???? ????? ?????? ???? ????? ????? ª?? ????? , ??? ???n? ????????? ???????. ?? ???δ? ??κ??? TV?? ??????, ??? ???? ????? ?? ???? ???콺 ????? ???? ????? ???? ??? ??????.

???? ????? ????????? ?? ???? ?뿪???? ??????????. ???? ???? ????? ?뿪?? ????????, ?? ?????? ???(10?? ??) ?????? ???? ????? ????? ??????. ????? ??? ???? ????? ??????? ???? ???? ?? ?뿪?? ????????μ?, ??????? ?뿪?? ?? ?????? ??????? ???. SHF?? EHT ?뿪?? ???? ??????? ??????????? ???????.

?? ?  

?? ??  

????? ?뿪

???????? ????

?????? (Very Low Frequency)  

VLF  

9 kHz - 30 kHz  

33 km - 10 km

???? (Low Frequency) 

LF  

30 kHz - 300 kHz  

10 km - 1 km

???? (Medium Frequency)  

MF  

300 kHz - 3 MHz  

1 km - 100 m

???? (High Frequency) 

HF  

3 MHz - 30 MHz  

100 m - 10 m

????? (Very High Frequency) 

VHF  

30 MHz - 300 MHz  

10 m - 1 m

??????? (Ultra High Frequency)  

UHF  

300 MHz - 3 GHz  

1 m - 100 mm

??????? (Super High Frequency)  

SHF  

3 GHz - 30 GHz  

100 mm - 10 mm

????????? (Extremely High Frequency) 

EHF  

30 GHz - 300 GHz  

10 mm - 1 mm

?? ?????? 2000?? 5?? 9??? ????????????.