EN 301 842-4 : 1.3.1現行
VHF AIR-GROUND DIGITAL LINK (VDL) MODE 4 RADIO EQUIPMENT; TECHNICAL CHARACTERISTICS AND METHODS OF MEASUREMENT FOR GROUND-BASED EQUIPMENT; PART 4: POINT-TO-POINT FUNCTIONS
出版：European Telecommunications Standards Institute
專家解讀視頻
Describes Very High Frequency (VHF) Digital Link (VDL) Mode 4 ground-based radio transmitters and receivers for air-ground communications operating in the VHF band, using Gaussian-filtered Frequency Shift Keying (GFSK) Modulation with 25 kHz channel spacing and capable of tuning to any of the 25 kHz channels from 112,000 MHz to 136,975 MHz as defined in ICAO VHF Digital Link (VDL) Standards and Recommended Practices (SARPs).
NBN EN 301 842-4 : 2015 - Identical
PN EN 301 842-4 : 2015 - Identical
NEN EN 301842-4 : 2015 - Identical
NF EN 301842-4 : 2015 - Identical
DS EN 301842-4 : 2015 - Identical
DIN EN 301842-4 : 2015 - Identical
