RADIO EQUIPMENT AND SYSTEMS (RES). RADIO TRANSMITTERS AND RECEIVERS AT AERONAUTICAL STATIONS OF THE AERONAUTICAL MOBILE SERVICE OPERATING IN THE VHF BAND (118 MHZ-137 MHZ) USING AMPLITUDE MODULATION AND 8,33 KHZ CHANNEL SPACING. TECHNICAL CHARACTERISTICS AND METHODS OF MEASUREMENT.
无线电设备和系统(RES) 使用调幅和8.33 KHZ信道间隔 在VHF频段(118 MHZ-137 MHZ)运行的航空移动服务航空站的无线电发射机和接收机 技术特性和测量方法