2A533A Vol. 4 Part 1
Preperation quiz for comm/nav mission systems journeyman.
- 1.What is the purpose of the very-high frequency omnirange system?
- A.
Determine up/down guidance
- B.
Determine left/right guidance
- C.
Determine bearing to a station
- 2.The basic operating principle of very-high frequency omnirange is phase comparing the
- A.
30-Hz ref and 9960-Hz FM signals
- B.
30-Hz ref and 30-Hz variable
- C.
30-hz var and 9960-Hz FM signals
- 3.If the magnetic bearing to a very-high frequency omnirange station is 225degrees, the pahse difference between the 30-Hz ref and 30-Hz variable is
- A.
15 degrees
- B.
45 degrees
- C.
135 degrees
- 4.Very-high frequency omnirange aural (station I.D.) signals are transmitted
- A.
Continuously
- B.
At 20 second intervals
- C.
At 30 second intervals
- 5.The instrument landing system localizer course width at a distance of 10 miles from the transmitter is normally
- A.
5 degrees
- B.
2.5 degrees
- C.
0.7 degrees
- 6.What frequency band is used to transmit instrument landing system glide slope information?
- A.
Low-frequency
- B.
High frequency
- C.
Ultra-high frequency
- 7.The instrument landing system marker-beacon carrier frequency is
- A.
68.1 Mhz
- B.
75 Khz
- C.
75 Mhz
- 8.What microwave landing system outputs are provided to the pilots an co-pilots horizontal situation and attitude director indicators for approach and take off?
- A.
Azimuth signals
- B.
Elevation signals
- C.
Steering indications
- 9.What is not a microwave landing system output?
- A.
Glideslope deviation
- B.
Azimuth warning flag
- C.
Glideslope correction flag
- 10.On how many channels are the microwave landing system recievers capable of operating?
- A.
200
- B.
500
- C.
559
- 11.What is the frequency range of the microwave landing system recievers?
- A.
500-669 Mhz
- B.
669-5031 Mhz
- C.
5031-5091 Mhz
- 12.Which antennas are shared by microwave landing system numbers 1 and 2?
- A.
1 + 3
- B.
3 + 2
- C.
3 + 4
- 13.Which microwave landing system component allows for selection of system status?
- A.
Reciever power on relay
- B.
Flight director mode selector
- C.
Integrated display computer unit
- 14.When an instrument landing system frequency is sleected, the arn-127 very-high frequency omnirange receiver parks the horizontal situations indicator bearing pointer at the
- A.
3' o'clock position
- B.
4' o'clock position
- C.
6' o'clock position
- 15.Which radial will the aircraft be positioned on if the aircraft is located north of the very-high frequency omnirange station?
- A.
180 degrees
- B.
090 degrees
- C.
000 degrees
- 16.To get a FROM flag in view on the horizontal situation indicator when the magnetic bearing to the very-high frequency omnirange station is 75 degreees, the selected course should be manually set to
- A.
75 degrees
- B.
150 degrees
- C.
210 degrees
- 17.During instrument landing system operation, a full-scale deflection of the horizontial situation indicator vertical needle indicates the aircrafat is off course from the runway centerline by
- A.
400 ft
- B.
0.6 degrees
- C.
2.5 degrees
- 18.In instrument landing system operation, a deflection of tow dots on the attitude director indicator glide slope deviatioin scale indicates the aircraft is
- A.
0.25 degrees off glide path
- B.
2.5 degrees of glide path
- C.
0.6 degrees of glide path
- 19.When the instrument landing system marker becon amber (orange) lamp illumintes the pilot hears a
- A.
3000 Hz tone
- B.
1000 Hz tone
- C.
1300 Hz tone
- 20.The total number of very-high frequency omnirange/instrument landing system (vor/ils) channels that can be selected by thte AN/ARN-147 vor/ils control box is
- A.
40
- B.
160
- C.
200
- 21.If the very-high frequency omnirange station signal is lost or the reciever malfunctions, the arn-147 system parks the bearing pointer at the
- A.
3 o'clock position
- B.
6 o'clock position
- C.
9 o'clock position
- 22.In very-high frequencyt omnirange (vor) mode, what information is sent to the horizontal situation indicator by the arn-147 vor/localizer reciever?
- A.
Relative bearing, flag alarm, and heading
- B.
Flag alarm, distance, and left/right deviation
- C.
Left/right deviation, flag alarm, and to/from
- 23.What glide slope infromation is provide to the attitude director indicator when the an/arn-127 is operatin in the instrument landing system mode?
- A.
Audio signals
- B.
Navigation signals
- C.
Up/down deviations
- 24.The main reference burst is transmitted when the main lobe of the tactical air navigation surface beacon radiation patter is due
- A.
North
- B.
South
- C.
East
- 25.A taactical air navigation surfac beacon provides a station identification code (beacon identity tone) every
- A.
7.5 seconds
- B.
20 seconds
- C.
30 seconds
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