A - Radio altimetry (14-06-18) Flashcards
1
Q
What is the max height of a radio altimeter?
A
2500ft
2
Q
How many antennae do radio altimeters have?
A
2, one for Tx and one for Rx
3
Q
What is the transmission characteristic of the radio altimeter?
A
Continous transmission, FM (+/-50MHz above and below carrier wave fcy)
Carrier wave at 4300MHz
4
Q
What is the shape of the beam produced by a radio altimeter?
A
Conical
5
Q
What is the accuracy of the radio altimeter?
A
The highest of:
+/- 2ft
+/- 1.5%
6
Q
What will radio altimeter measurements be shown?
A
On the PFD
7
Q
What are the height ranges and indication of radio altimeter measurements?
A
>2500ft no height shown but DH shown
<2500, >1000 height shown
<1000, >DH dial shown
<dh>
</dh>
8
Q
A
