DIN EN 301842-1-2015 VHF空地数字化连接(VDL)模式4无线电设备.陆基设备测量技术特性及方法.第1部分:地面设备EN(德国标准英文版EN 301842-1 V1.4.1 (2015-04)核准本)
VHF air-ground Digital Link (VDL) Mode 4 radio equipment - Technical characteristics and methods of measurement for ground-based equipment - Part 1: EN for ground equipment (Endorsement of the English version EN 301 842-1 V1.4.1 (2015-04) as German standa