中频测向器 medium frequency direction finder

中频测向台 medium frequency direction finder station

中频测向仪 medium-frequency direction finder

中高频测向台 medium-high frequency direction finding station

中高频测向仪 medium high frequency direction finder

中频-甚高频测向台 MVDF

中频和甚高频测向台 MediumandVery High Frequency DirectionFinding-station