Eurocae Minimum Operational Performance Specification for Airborne VHF Receiver-Transmitter operating in the frequency range 117,975-137,000 MHz, Document ED-23B, Amendment 3, December 1997.
EUROCAE, Minimum operational performance specification for airborne VHF receiver-transmitter operating in the frequency range 117,975-136,975 MHz, document ED-23B, amendement 3, décembre 1997.