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Radio Navigation > NDB > Flashcards

NDB Flashcards

1
Q

What is the frequency band for an NDB?

A

190-1750 kHz

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2
Q

What is the range of a locator NDB?

A

10-25nm

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3
Q

What is the range of an en route NDB?

A

50nm

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4
Q

What are the two signals an NDB can emit?

A

N0NA1A
N0NA2A

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5
Q

From the vertical, what is the maximum number of degrees the cone of confusion can be?

A

40

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6
Q

From the horizontal, what is the maximum number of degrees the cone of confusion can be?

A

50

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7
Q

What are the two types of RBI?

A

Fixed and moving

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8
Q

If an RBI is pointing to N or 0, what type of RBI is it?

A

Fixed

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9
Q

For an NDB to be used on an approach how accurate do you have to do?

A

5 degrees

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10
Q

Under what circumstances would an ADF bearing be affected by dip error?

A

Aircraft banking

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11
Q

Mountain effect, occurring for instance with ADFs, is caused by what physical phenomenon?

A

Diffraction

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12
Q

What is the ideal intercept angle for an NDB?

A

30 degrees

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13
Q

Whats another name for a low powered NDB?

A

Locator

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14
Q

The magnetic variation to convert the RMI bearings of NDBs and VORs to true bearings will occur at the BLANK position for NDBs and at the BLANK position for VORs.

  • aircraft
  • beacon
A

Aircraft for NDB
Becon for VOR

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15
Q

How do you calculate the new range for an NDB?

A

NEW RANGE / OLD RANGE = (NEW POWER/OLD POWER) ^2

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16
Q

To double the range of an NDB, what must you do with the power?

A

Quadruple it.

17
Q

How do you calculate the range (over land) for an NDB?

A

2 x _/power (watts)

18
Q

How do you calculate the range (over water) for an NDB?

A

3 x _/power (watts)

19
Q

What causes quadrantal errors?

A

Metallic surfaces

20
Q

What does BFO stand for (automatic)?

A

Beat frequency oscillator

21
Q

Errors caused by the effect of coastal refraction on bearings at lower altitudes are maximum when the NDB is (coastal/inland) and the bearing crosses the coast at (acute/right) angle.

A

Inland - acute

22
Q

On which of the following items does the range of VDF depend?

  1. Line of sight formula
  2. Power of transmitters
  3. Intervening high ground
A

1-2-3

Radio Navigation (12 decks)

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