1
Q
NDB Frequency Band
A
190 kHz (upper LF) - 1750 kHz (lower MF)
2
Q
Orientation for:
Min QE
Max QE
A
Min QE: Arriving signals in line with fuselage / signals coming from beam
Max QE: 45° to the fuselage, up to ±20°
3
Q
Coastal Refraction Effect Max
A
Signal crosses coastline at 30°
4
Q
Loop Antenna Switching Signal Frequency
A
47 Hz
5
Q
Loop Swing Intervals
A
Initial installation: 15°
Check swings: 45°
6
Q
Hours to Avoid Loop Swing
A
±2 hrs of sunset (Avoid night effect)
7
Q
Air Swing Intervals
A
10° / 15° (Depending on pattern flown)
ACNS
flashcards
Decks in class (15)
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