Airfield Systems Journeyman Vol 2 CDC 3D156

The shelter houses power switching, lighting, environmental controls, and two equipment cabinets containing the ILS electronic equipment and a workbench with electrical outlets.

Via conduit! What are you a dumbass?

115/225 VAC ±10 percent, 50 ±3 Hz or 60 ±3 Hz, and 3 phase at 100 amperes.

14

Via the antenna distribution box.

Chapter 1 of TO 31R4-2GRN30-2.

108 to 112 MHz.

The carrier is modulated with 90 Hz, 150 Hz, and 1,020 Hz AM with a depth of modulation of 20 percent, 20 percent, and 5 percent respectively.

705 Hz, 1,410 Hz, 2,820 Hz, and 2,256 Hz.

20.3 seconds.

(1) Radiate the pattern
(2) monitor the pattern
(3) control the transmitter.

In parallel, so that one power supply can power the entire station if necessary.

Course: 111.90475 MHz, clearance: 111.89525 MHz.

Measure the output signals power and switch which transmitter is routed to the distribution unit.

Because they are at different frequencies.

The signals that will be radiated by the localizer are monitored before they are radiated.

The control unit.

The CRS transmitters.

To the CRS and CLR monitors.

The distribution unit.

To provide all regulated DC power for the electronic components of the localizer station and keep the backup batteries charged.

CSB = 15 watts, SBO = 360 milliwatts.

CSB - Carrier plus Sideband
SBO - Sideband Only

To modulate the CSB signal for station identification.

SFS - Synthesized-frequency source

Diode switching network.

460.8 kHz.

An output occurs to reset the divider chain, thus the proper phase relationship between the 90 and 150 Hz signals is assured.

To change the input waveform such that all negative swings are changed to positive.

Routing and switching.

Sideband only.

CSB = 10 watts, SBO = 300 milliwatts.

In the course transmitter.

4.75 kHz below the station assigned frequency.

RF transfer and RF measurement.

Power measurement by meter M1, or waveform observation at waveform jack J2.

To distribute the course and clearance transmitter outputs to the antenna array in the proper phase and amplitude.

90°

To antenna pairs one thru five.

About 10 dB.

It allows for minimal environmental effects.

The antenna a-spacing.

Mask nulls formed by additional lobes of the course transmitter.

If the forward terrain in the coverage area of the localizer is free of major structures and terrain problems.

Sampling points in the interlock assembly.

Heterodyning.

There is no clearance transmitter to assist in producing the intermediate frequency.

Course monitor and clearance monitor.

Course monitor.

460.8 kHz.

In the timing assembly.

After the completion of the last measurement routine of the program.

DP2 and DP4 lines from the display selector switch.

The DC signal stops the 600-Hz signal which in turn activates the alarm system.

Clearance monitor checks clearance frequency; course monitor does not.

Clearance assembly.

To provide final approach glide path information to landing aircraft.

An RF carrier signal modulated at 90 and 150 Hz and a sideband only signal modulated by 90 and 150 Hz.

Abnormal primary power, abnormal shelter temperature, abnormal battery charge/discharge current, power supply fault, and single monitor alarms.

To continuously monitor the navigational components of the glide slope RF signal and activate an alarm circuit should these components vary outside preset limits.

An antenna that utilizes the ground plane in front of the antennas to reflect signal, thereby forming nulls as if a mirror image antenna of opposite phase were buried below the tower.

To provide final approach glide path information to landing aircraft.

An RF carrier signal modulated at 90 and 150 Hz and a sideband only signal modulated by 90 and 150 Hz.

Abnormal primary power, abnormal shelter temperature, abnormal battery charge/discharge current, power supply fault, and single monitor alarms.

To continuously monitor the navigational components of the glide slope RF signal and activate an alarm circuit should these components vary outside preset limits.

An antenna that utilizes the ground plane in front of the antennas to reflect signal, thereby forming nulls as if a mirror image antenna of opposite phase were buried below the tower.

Locally, from the site, or remotely, from the control tower or RAPCON.

The system provides an adjustable glide path between 2 and 4 degrees, depending on the individual installation.

705 Hz, 1,410 Hz, 2,820 Hz, and 2,256 Hz.

900 Hz, the interlock frequency

1,175 Hz, the remote control frequency.

It provides final approach glide path information to landing aircraft.

RF carrier signal modulated at 90 and 150 Hz (CSB) and a double sideband, suppressed carrier signal modulated at 90 and 150 Hz (SBO).

An alarm signal is sent to the control unit that initiates a transfer to the standby transmitter.

Provides automatic control of the glide slope station transmitter used to select either transmitter 1 or 2 as the main transmitter, initiates transfer from main to standby if both monitors detect a radiated fault, and displays and provides a status signal to the RC/DU.

The detected path and width signals.

The station being turned off.

Control unit, changeover unit, and power supply.

Alignment.

Yes the operation is the same, instead of 180 degree length of line in the localizer, it is three times or 540 degrees in the glide slope.

CSB = 3 watts, SBO = 45 milliwatts.

Station transfer bypass.

International orange and white.

200

Locally from the site or remotely from the control tower or radar approach control (RAPCON).

1 - Single-Channel

108 to 112.

15 - Course

10 - Clearance

18

SAF +4.75.

SAF –4.75.

1,020

Frequency difference.

2

Course transmitters.

15, 360.

Diode-switching network.

300.

Course transmitter.

180

Pairs 1–5.

When the forward terrain is free of major obstructions and terrain problems.

SBO is 180 degrees out of phase; CSB is in phase.

Frequency separation.

460.8.

Digital readout.

9.5.

Ident percent of modulation.

40

C - is NOT an output status tone of the Control Unit.

a. 705.
b. 1,410.
C. 2,350.
d. 2,820.

Control unit.

Carrier-plus sideband (CSB) only.

Sideband only (SBO) only.

Main transmitter is turned off and standby transmitter is turned on.

3, 45.

three times that of the localizer.

None.

near-field path signal processor and clearance assembly.

The VOR monitors must be wired into the local PC and the VOR key input is wired into the TACAN transponder

VOR system.

Collect, display, and print measured parameter data, turn on/off the transmitter, ID, and alarm bypass.

System status window and the master menu window.

Clicking specific buttons on the menus.

Data from both monitors is displayed along with the upper and lower limits of each parameter.

To provide remote start and stop control and status indications for VOR and TACAN installations.

(1) Converts control panel inputs into signals that can be transmitted to the VOR and TACAN sites.
(2) Monitors return signals from these sites.
(3) Provides both control signals and operating power to status indicators and audible alarm.

Audio volume control and indicator brightness.

(1) The VOR transmit/receive circuits.
(2) The TACAN transmit/receive circuits.
(3) The display/alarm sense circuits.
(4) The oscillator (alarm)/audio amplifier circuits.

Start = 74 Hz. Stop = 66 Hz.

The actual ON or OFF status of the remote transmitters.

To assume the operating load of the control indicator in a power failure or rectifier/filter shutdown.

A minimum of two hours.

108 to 118 MHz, 0.001%.

Any internal monitor malfunction will cause an alarm, but will not cause system shutdown.

An alarm will occur within six seconds for continuous ID or 30 seconds for absent ID.

Sideband 1 and sideband 2.

The control indicator located in the ATC facility.

Octantal, quadrantal, and duantal.

For monitor calibration, integrity checks, and fault isolation.

+18V, –18V, and +9V.

To provide bearing and distance information for up to 100 aircraft at a distance of up to 200 nautical miles.

962 to 1213 MHz.

Reply delay, pulse spacing, efficiency, output pulse rate, identification, mod gen status, north reference burst, auxiliary reference burst, and antenna scan rate

North and auxiliary reference burst pulse pairs.

12 pulse pairs (12 us between pulses of a pair) spaced 30 us apart.

+65 VDC, +17.5 VDC, 17.5 VDC, and +10 VDC.

Amplifies the drive signal to 3kW peak.

NORTH TRIGGER and AUX TRIGGER.

The primary monitor, normally monitor A.

The monitor.

The state of the monitor A CPU MAL signal.

They tell the monitor that a solid state antenna is present, and indicate if a soft fail, hard fail, or clock fail condition exists.

12μs.

(1) North reference burst; 360 pulse/second.
(2) Auxiliary reference burst; 1440 pulse/second.
(3) Identification; 5400 pulse/second.
(4) DME interrogation; random.
(5) Squitter; (2700 - DME) X 2, 5400 maximum.

No auxiliary reference bursts.

Loss of squitter pulses, but continued passage of DME interrogations and ID.

Holes in the output pattern and 135 Hz instability in the aircraft receiver.

The aircraft will be able to recognize their own replies by the pulse spacing between pair groups.

TACAN stations within 400 miles of each other are not assigned adjacent frequencies.

Power divider, azimuth feeds, vertical columns, and the multiplexer.

Makes NRB and ARB triggers, which are used to produce NRBs and ARBs in the transponder, the 15 and 135 Hz modulation, and causes the radiation pattern to appear to rotate.

Modulation generator microprocessor card.

40.5.

A high power RF termination load.

14 seconds.

2

Turn the transmitter on or off.

2

2

Modem

Volume control of the audio.

START/STOP switch.

actual status of the remote site.

25 to 100.

6.

108 to 118.

control indicator.

Establishing fault limits.

20

100.

126

Input pulse rate.

Plus +65

VOR KEY INPUT.

Two

Modulator.

discriminate against interference.

12

3,600

Pulse spacing between pair groups.

the weaker signal is almost totally rejected.

Acceptable guidance information from the point where the pilot intercepts the ILS to the point where the localizer course line intersects the glide path at a height of 100 feet above the horizontal plane containing the runway threshold.

4 nautical miles.

Point E.

Zone 3.

0.180 DDM.

DDM - Difference in depth of modulation

.155 DDM.

DDM - Difference in depth of modulation

Sector 3.

(1) Site evaluation
(2) commissioning
(3) periodic
(4) special
(5) surveillance.

Before commissioning all newly installed NAVAID equipment.

Equipment malfunctions, changes in terrain, aircraft accident involving NAVAIDs, and any major maintenance or modification to the equipment.

If an out-of-tolerance condition is found.

The facility is fully usable within its service area and meets all tolerances.

Restricted

Unusable.

To make sure that all airborne equipment is calibrated, ground personnel is briefed of intended actions, the flight inspection crew is briefed, and pertinent flight information is obtained.

Before the flight check aircraft arrives.

This individual gathers and analyzes the data being transmitted by your facility and determines its usability.

AFIS is a method of inspecting a facility by using an on-board inertial navigation system (INS) as a reference and global positioning system (GPS). The INS tells the flight inspection computer where it is. The computer analyzes the difference between this information and what is received from your facility to
determine the results.

Mean sea level (MSL).

Slow excursions of the course.

The angular deviation required in order to produce a full-scale course deviation indication of the airborne navigational instrument.

Rapid irregular excursions of the electromagnetic course or path.

Structure describes the excursion characteristics of a navigation on-course or on-path signal which includes bends, scalloping, roughness and other aberrations.

Low approach, normal width, course wide/clearance wide, and normal width and symmetry run.

Performed to make sure the monitors detect an alarm condition (resulting in shutdown) before the radiated signal goes out of tolerance.

Wide alarm, advance and retard phase, and normal width/angle/symmetry/structure below path run.

0.155 DDM.

Roughness, bends, or scalloping.

Ident, owner, state, country, region, inspection date(s), location, inspection type, category, and runway.

1, 2, 4, and 5.

First, make sure your radio for communicating with the flight check aircraft is working properly and set up at the site. Secondly, make printouts of the TACAN’s monitored parameters, and make certain everything is
well within normal parameters.

20 mile radius from station; if coverage signal levels are adequate, and if there are any unusable sectors.

1.5 degrees; 0.2 miles.

Antenna rotation speed, squitter rate, north reference burst, auxiliary reference burst, auxiliary reference burst count, modulation, and percent range replies.

Checks meters and hard copy recording of the meter indications.

How far the aircraft is off a selected course.

L = 40 miles, H = 40 miles, T = 25 miles.

By the attitude effect.

The point at which it becomes loud enough to seriously interfere with the average pilot’s ability to understand the identification of the desired station.

Alignment or coverage orbits.

The modulation of the reference and variable signals.

By varying the power output of the sideband card.

30 percent

1.5 degrees; .2NM.

2.0.

When the course shifts more than 1.0 degree from the alignment established for the reference checkpoint.

TO 00–33A–1001 General Communications Activities Management Procedures and Practice Requirements.

The act of validating your current facility’s performance based on a comparison with the facility reference data.

A task qualified work center supervisor.

Every 365 days.

The facility must be considered unusable until the certification is completed.

After repairs or adjustments are made to any subassembly that affects monitored parameters.

Some outside event triggers a special certification.

AFT0 Form 499.

Annual, Equipment Repair/Adjustment, and Special.

Why you did the certification, what you did, and the results of the comparison with the reference data.

above the runway threshold.

the approach zone.

4 nautical miles.

Special

11–225

Flight inspection technician.

Flight inspection technician.

course width.

4

Plus or minus ± 17 of the commissioned width.

Decrease the sideband only (SBO).

Advance and retard.

7.5 below and 10 above.

8240–8.

11

40

8240–2.

To-from.

25

azimuth.

unrestricted.

1

00–33A–1001.

One

Periodic.

365

Special.

Special.

Air Force technical order (AFTO) 499.

Why you did certification, what you did, and results of comparison with reference data.

Facility record.

Reference data.