Warning and Recording | Radio Altimeter Flashcards
A radio altimeter is require with audio when over ___
water
Low altitude radalts are used for precision approaches, with an accuracy of +/-ft between 0ft and 500ft, or +/-._%
2, 1.5
Radalts are only active below ___ft
2500
High altitude radalts can work at up to ____ft
50,000
They use a continuous wave __ radio beam in the ___ band, ___ to ___ _Hz.
FM SHF 4300 4400 MHz
The beam is directed towards the ground in a __ degree cone for and art, and __ degrees athwartships
30 30
The transmit frequency sweeps up and down through ___ _Hz either side of ___ _Hz
200 4300
Below ____ft on an EFIS display, the readout changes to analogue
1000
Slope changes for a radar altimeter measuring area should be kept to a minimum, not exceeding _% per __m
2 30
Radio altimeters are ___ modulated
frequency