영어항공무선통신사 · 2008년03월30일 · 61/70
61.Any radio frequency from 30 to 300MHz is defined as
1
Low frequency
2
Medium frequency
3
High frequency
4
Very high frequency정답
해설
VLF(Very Low Frequency) 3 ~ 30kHz / 10km 이상 / 초장파 LF(Low Frequency) 30 ~ 300kHz / 1 ~ 10km / 장파 MF(Medium Frequency) 300 ~ 3000kHz / 100 ~ 1000m / 중파 HF(High Frequency) 3 ~ 30 MHz / 10 ~ 100m / 단파 VHF(Very High Frequency) 30 ~ 300MHz / 1~ 10cm / 초단파 UHF(Ultra High Frequency) 300 ~ 3000MHz / 10 ~ 100cm / 극초단파 SHF(Super High Frequency) 3 ~ 30GHz / 1 ~ 10cm / 초극초단파 EHF(Extremely High Frequency) 30 ~ 300GHz / 1 ~ 10mm / 극초극초단파