3-72K6 B
What type of antenna is attached to an aircraft's Mode C transponder installation and used to receive 1030 MHz interrogation signals from the Air Traffic Control Radar Beacon System (ATCRBS)?
A. An electronically steerable phased-array directional antenna.
B. An L-band monopole blade-type omnidirectional antenna.
C. A folded dipole reception antenna.
D. An internally mounted, mechanically rotatable loop antenna.
