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Block 12 > 5a TACAN > Flashcards

5a TACAN Flashcards

1
Q

This provides air crew with continuous bearing, distance information while transmitting, BIT info from a desired TACAN station

A

TACAN

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2
Q

TACAN uses what 6 things 

A 
Point to point navigation
Close air support for ground troops
Mid air refueling
Rendezvous
Homing
Determine position of aircraft
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3
Q

This uses 1350Hz, 3 letter Morse code, transmits every 30 seconds, has a max time of 7.5 seconds

A

BIT Beacon identification tone

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4
Q

The operating range for groundstation is what

A

390 NM

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5
Q

The operating range for airborne begins is what

A

200 NM

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6
Q

What are the power requirements

A

28 VDC

115 VAC

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7
Q

What is the output power of the ground stations

A

500 Watts

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8
Q

What is the output power of the airborne beacons

A

250 Watts

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9
Q

What is the slant range?

A

The “hippo” angle of a triangle from the aircraft to the station

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10
Q

How many total channels are there

A

252

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11
Q

How many channels are for G/A or A/A

A

126 X channels

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12
Q

How many channels are for A/A only

A

126 Y channels

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13
Q

What is the frequency range for RECEIVE

A

962-1213 MHz

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14
Q

What is the frequency range for TRANSMIT

A

1025-1150 MHz

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15
Q

Coarse Bearing is +/- ___ degrees

A

3° 

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16
Q

Fine Bearing is +/- ____ degrees?

A

1°

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17
Q

The principal of operation uses what kind of comparison? 

A

Phase comparison

18
Q

TACAN shows North when cardioid is facing due ____?

A

East

19
Q

What bearing uses single phase comparison?

A

Coarse

20
Q

What bearing uses double phase comparison?

A

Fine

21
Q

_________ Bearing uses single phase comparison by comparing:

MRB (main reference burst) to 15Hz (AM signal) to get the +/- 3° variable

A

Coarse

22
Q

______ Bearing uses double phase comparison by comparing both:

MRB(main reference burst) to 15Hz (AM signal) AND

ARB(auxiliary reference burst) to 135Hz to get the 1° variable

A

Fine

23
Q

How many pulse modulated signals are there

A

5

(How many letters in the word pulse) 

24
Q

How many amplitude modulated signals are there?

A

2

25
Q

Bearing memory is stored in the RT for how long?

A

3 seconds

26
Q

Distance memory is stored in the RT for how long? 

A

15 seconds

27
Q

This produces and measures the signals for distance

A

DME (distance measurement equipment)

28
Q

The formula for distance information for slant range is what 

A

D = TT-Delay
——————
12.36 microseconds

29
Q

SECA uses ______ Bearing only

A

Coarse

30
Q

A/A REC & A/A T/R modes must be how many channels apart?

A

63

31
Q

Receive Mode (REC) is used for -

A

Ground Station
Fine Bearing
Double Phase Comparison

32
Q

T/R mode is used for what -

A

Distance

Ground Station

Fine Bearing

Double Phase Comparison

33
Q

A/A REC (Receive) mode uses -

A

Coarse Bearing

SECA

Single Phase Comparison

34
Q

A/A R/T mode uses -

A

Distance

Coarse Bearing

SECA

CA

Single Phase Comparison

35
Q

T/R & A/A T/R are the only ones that measure ________?

A

Distance

36
Q

Each mode of operation provides relative bearing, coarse deviation, and______?

A

TO/FROM

37
Q

During the 1st 7 seconds of the Manual & Automatic Tests, the bearing pointer slews to ______ degrees, _____ ______ are in view, and the ________ _________ is over the distance window.

A

270°

All Flags

Distance Shutter

38
Q

During the the last 15 seconds of the manual self-test, the bearing pointer slews to ______ degrees, all flags are ___ __ ____, and has a distance read out of 100.

A

180°

Out of View 

39
Q

This combines magnetic heading from aircraft compass system and magnetic bearing from R/T to produce relative bearing

A

MX Adapter

40
Q

Distance is found on what 2 indicators?

A

BDHI & HSI

41
Q

This is a physical attachment to the aircraft, it is an electrical interface and houses the RT and MX adapter

A

RT Mount

Block 12 (11 decks)

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