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dd Flashcards

1
Q

The Very High Frequency Omnidirectional and Radio Range (VOR) power supply 1A7 is an alternating current (AC) to direct current (DC) converter that supplies a volts direct current (VDC) of

A

40.5

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2
Q

The AN/FRN-43 unit that measures and checks the Very High Frequency Omnidirectional and Radio Range (VOR) signals against established parameters is the

A

rf monitor

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3
Q

The AN/FRN-45C tactical air navigation (TACAN) antenna produces an electrically scanned radiation pattern by modulating the pulsed radio frequency (RF) from the transponder with what two frequencies?

A

15 and 135 hertz (Hz).

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4
Q

In the AN/FRN-45C tactical air navigation (TACAN) X mode, the difference in frequency between the received frequency and assigned transmit (Tx) frequency is

A

63 mhz

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5
Q

The AN/FRN-45C Tactical Air Navigation (TACAN) System frequency range, in megahertz (MHz), is

A

962 to 1213.

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6
Q

Which software is the AN/FRN-45C tactical air navigation (TACAN) personal computer (PC) equipped with to communicate with the system equipment?

A

mdt

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7
Q

At which rate, in revolutions per minute, and direction does the AN/FRN-45 tactical air navigation (TACAN) antenna pattern appear to rotate?

A

900, clockwise.

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8
Q

If an aircraft receives signals from two ground beacons operating on the same frequency, the

A

weaker signal is almost totally rejected.

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9
Q

The most important result of maintaining a constant AN/FRN-45 Tactical Air Navigation (TACAN) System duty cycle is

A

pattern stability

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10
Q

The total number of pulse pairs transmitted by the AN/FRN-45 Tactical Air Navigation (TACAN) System is

A

3,600

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11
Q

How many pulse pairs make up an auxiliary reference burst (ARB)?

A

6

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12
Q

The microsecond (µs) spacing between the AN/FRN-45 Tactical Air Navigation (TACAN) System pair pulses in the X mode is

A

12

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13
Q

The AN/FRN-45 Tactical Air Navigation (TACAN) System uses pulse coding to

A

discriminate against interference

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14
Q

The output of the transmit (Tx) section of the AN/FRN-43 Very High Frequency Omnidirectional and Radio Range Tactical Air Navigation (VORTAC) System coder/decoder (CODEC) is controlled by the

A

START/STOP switch.

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15
Q

The visual status lamps on the AN/FRN-43 Very High Frequency Omnidirectional and Radio Range Tactical Air Navigation (VORTAC) System control indicator display the

A

actual status of the remote site.

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16
Q

Which adjustment can air traffic control (ATC) personnel make to the AN/FRN-43 Very High Frequency Omnidirectional and Radio Range Tactical Air Navigation (VORTAC) System control indicator?

A

Volume control of audio

17
Q

Within the AN/FRN-43 Very High Frequency Omnidirectional and Radio Range Tactical Air Navigation (VORTAC) System, the personal computer (PC) display is divided into how many main windows?

A

2

18
Q

What is the primary method of operator control and monitoring of the Very High Frequency Omnidirectional and Radio Range (VOR) navigational set?

A

Local and remote personal computer (PC).

19
Q

How is the AN/FRN-43 Very High Frequency Omnidirectional and Radio Range Tactical Air Navigation (VORTAC) System local personal computer (PC) connected to interface with the remote PC?

A

modem

20
Q

One purpose of the squitter pulses transmitted from the tactical air navigation (TACAN) is to

A

maintain constant transmitter duty cycle.

21
Q

The tactical air navigation (TACAN) coded reply signals are used by aircraft to determine their

A

distance from the ground station.

22
Q

How many monitors must fail or detect a fault for the AN/FRN-45 Tactical Air Navigation (TACAN) System to shut down?

A

2

23
Q

Which AN/FRN-45 Tactical Air Navigation (TACAN) System power supply output, in volts direct current (VDC), is over current and over voltage protected?

A

65

24
Q

Which indication on the modulation generator (mod gen) display will a low power fault give on the AN/FRN-45 tactical air navigation (TACAN) modulation generator (mod gen)?

A

78

CDC (10 decks)

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