RADIO ALTIMETER TRANSCEIVERS
The RAD ALT transceiver contains the 28 V DC power supplies, the
transmitter and the receiver circuits.
The receiver-transmitter transmits 4300 MHz FMCW signals through the
transmit antenna and receives the ground-reflected signals through the
receive antenna.
The receiver-transmitter measures the time interval between the transmitted
and received FMCW signals to calculate the aircraft height.
ANTENNAS
The receive and transmit antennas are low profile, rectangular-shaped
antennas installed on the bottom of the tail boom.