30-Hz reference and 9,960-Hz frequency-modulated (FM) signals
30-Hertz (Hz) reference and 30-Hz variable signals
30-Hz variable and 9,960-Hz FM signals
90- and 150-Hz modulated signals
68.1 kilohertz (kHz)
68.1 megahertz (MHz)
75 kHz
75 MHz
75°
150°
210°
360°
Low frequency
High frequency
Ultra-high frequency
Very-high frequency
200
500
559
669
Azimuth signals
Elevation signals
Steering indications
Ground station indications
Data bus coupler
Receiver power on relay
Flight director mode selector
Integrated display computer unit
3 o’clock position
6 o’clock position
9 o’clock position
12 o’clock position
15°
45°
135°
225°
1 and 2
1 and 3
3 and 2
3 and 4
40
160
200
540
400-Hertz (Hz) tone
3,000-Hz tone
1,000-Hz tone
1,300-Hz tone
North
South
East
West
7.5 seconds
20 seconds
30 seconds
40 seconds
5°
2.5°
0.7°
0.5°
Continuously
At 20-second intervals
At 30-second intervals
At specified time intervals
270°
180°
090°
000°
Audio signals
Navigation signals
Up/down deviations
Left/right deviations
200 – 500 megahertz (MHz)
500 – 669 MHz
669 – 5031 MHz
5031 – 5091 MHz
0.25° off glide path
2.5° off glide path
0.6° off glide path
6.0° off glide path
Azimuth deviation
Glide slope deviation
Azimuth warning flag
Glide slope correction flag
TO/FROM, heading, and relative bearing
Relative bearing, flag alarm, and heading
Flag alarm, distance, and left/right deviation
Left/right deviation, flag alarm, and TO/FROM
3 o’clock position
4 o’clock position
6 o’clock position
10 o’clock position
200 feet
400 feet
0.6°
2.5°
Quiz Review Timeline (Updated): Mar 19, 2022 +
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