RTCA DO 271:2005
RTCA DO 271:2005 Minimum Operational Performance Standards For Aircraft Vdl Mode 3 Transceiver Operating In The Frequency Range 117.975-137.000 Mhz Describes the procedures for an aircraft Very High Frequency (VHF) Digital Link (VDL) Mode 3 Transceiver used for air-ground (A/G) voice and data communications.