Planes Over Head

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Planes Over Head

Radio Navigation - ILS

There are 10 questions. Each question carries 1 mark. All the best!

What is the frequency of the Markers? *

1 point

175 MHz

150 MHz

100 MHz

75 MHz

Which band does the Glideslope operate in? *

1 point

UHF

VHF

SHF

What is the localizer coverage within ±10° of the centerline? *

1 point

25 nm

35 nm

10 nm

17 nm

What is the full scale glidepath deflection? *

1 point

0.7°

0.14°

0.5°

2.5°

What is the decision height for CAT I? *

1 point

200 feet

<100 feet

< 50 feet

100 feet

What is the principle used in the ILS operation? *

1 point

Difference in Frequency Modulation

Difference in Depth Modulation

Difference in Amplitude Modulation

Addition in Depth Modulation

Which of the following is true for markers? *

1 point

Inner Marker, Blue, 1300 Hz, 1050 m

Outer Marker, White, 3000 Hz, 5 km

Middle Marker, Amber, 400 Hz, 2.1 km

Outer Marker, Blue, 400 Hz, 6.5 - 11.1 km

Glideslope coverage for 3° glide is *

1 point

1.35° to 5.25°

1° to 5°

3°

0.45° to 1.75°

ILS frequency band is *

1 point

108-111.975 MHz

108-117.95 Hz

108-111.75 Hz

108-117.95 MHz

Emission code for ILS? *

1 point

A9W

None

P0N

A8W

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