This is a practice test for the 2E153 Ground Radio Communications Journeyman Career Development Course. Questions are pulled from various portions of each of the volumes.
Relatively rich in harmonics.
Transmitted in a specific direction.
Relatively stable in frequency and modulation.
Attenuated to prevent overdriving the frequency input.
Decreased considerably due to the severe distortion produced.
Increased considerably due to the severe distortion produced.
Decreased considerably due to superheterodyning in the Local Oscillator.
Increased considerably due to superheterodyning the the Local Oscillator.
21.4 MHz.
140.7 MHz.
160.14 MHz
171.4 MHz.
They are relatively complex devices.
They can only handle relatively small signals.
They give high fidelity detection for signals of sufficient amplitude.
They are relatively simple devices and provide a tremendous amount of gain.
Noise Channel Blanking Circuit.
AM/FM NB Amplifier.
Phase Locked loop frequency synthesizer.
Voltage regulator Circuit.
Amplify the microphone audio level to ensure it is of adequate amplitude.
Provides a tune-select signal to the antenna coupler.
Provides heterodyning of the audio and RF carrier.
Equalize varying voice levels to the audio signal is more uniform in amplitude.
Wavelength is inversely related to frequency.
Wavelength is directly related to frequency.
Wavelength is determined by length of the line.
Wavelength is expressed in lambdas.
There would be a nominal amount of signal gain.
The line would be resonant.
Current is at a maximum and voltage at minimum at the termination.
Current is at a minimum and voltage at maximum at the termination.
RG-213 Cable is best for transmission means.
RG-58 Cable is best for transmission means.
The electric field is transverse to the direction of propagation.
The magnetic field is transverse to the direction of propagation.
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Skip interference.
Multi-path interference.
Phase interference.
Harmonic interference.
L-Type antenna
Off-center-fed Hertz antenna
Slanting Wire antenna
Center-fed Hertz antenna
0 Degrees
45 Degrees
60 Degrees
90 Degrees
Active and Passive.
Active and Real Time.
Delay and Passive.
Delay and Real Time.
Realigns the satellite orbit to accomidate for new users.
Establishes the channel betwen the originating site and the distant end.
Can only be accessed by JSTARS systems.
Is routed through the DoD switch in Hawaii
RF/IF Module.
Controller Module.
Comsec Module.
Transmitter Module.
10 Watts average is FM operations
10 Watts average in AM operations
30 Watts average in FM operations
30 Watts average in AM operations
Navigation and timing transfer.
Navigation and nuclear detection.
Position and nuclear detection.
Postion and timing transfer.
15 routes with 25 legs per route.
15 routes with 20 legs per route.
20 routes with 25 legs per route.
20 routes with 20 legs per route.
Iridium
AFSATCOM
DSCS
INMARSAT
1 Network
2 Networks
3 Networks
4 Networks
2 Mbit/s
11 Mbit/s
24.7 Mbit/s
54 Mbit/s
Class 1
Class 2
Class 3
Class 4
Portable
Mobile
Repeater
Base Station
Trunked
Conventional
Repeater
Base Station
AMPS
CDMA
GSM
TDMA
Confidentiality
Data integrity
Non-repudiation
Authentication
CYZ-10
KYK-13
KY-57
KY-99A
Procedural problems
Operational problems.
Securty problems.
All of the above.
Time Hopping
Direct Sequence
Frequency Hopping
Pulsed Frequency Hopping
HQ1
HQII
AJII
MWOD
Provide feedback to the operator through the keyboard display.
Audio / Data Signal Level Control.
Control signal routing between modules.
Control frequency selection during frequency hopping operation.
Net time established by the DNCS.
Number of members and the compression rate.
Number of message headers and number of net members.
Number of net members and amount of data transferred.
JTIDS
EPLRS
SADL
TADIL-A
Joint Forces Air Component Commander
Theater Air Control System
Air Operations Center
Joint Forces Commander
Friendly air, land, and sea forces
Unknown air, land, and sea forces
Hostile air, land, and sea forces
Simulated air, land, and sea forces
Pulse Doppler and beyond-the horizon radars.
Maritime and beyond-the-horizon radars.
Pulse Doppler and maritime radars.
Pulse Doppler and Greenwich.
Surveillance and control data link.
Tactical Digital information link.
Immediate air request net.
Joint Tactical Information Distribution System.
Air Operations Center.
Air Support Operations Center.
Airborne Warning and Control System
Tactical Air Control Party
Cooperation of Joint Forces
Integration of Diverse Weapons Systems
Centralized Command
COMAFFOR Support
9: 3 HF, 3 VHF, 3 UHF
9: 2 HF, 3 VHF, 4 UHF
10: 3 HF, 3 VHF, 4 UHF
10: 3 HF, 3 VHF, 4 UHF
Tactical Air Control Party
Airlift Control Center
Forward Air Controller (Airborne)
Combat Control Team
AN/URC-113
AN/VRC-91
AN/GRC-226
AN/VRC-83
It has no IF because it cannot be tuned.
The output of the main receiver's Local Oscillator
A sample of the modulator control signal as an injection signal.
Internal Oscillators
It produces an alarm in the event of a tune fault.
It shuts down voltage output in the event of a tune fault.
It shuts down the voltage output if an abnormally large load appears.
It produces an alarm if an abnormally large load appears.
Continental US
Alaska, Canada, Mexico, and Surrounding Water
Hawaii and US territories, and possessions in the Pacific.
The Gulf of Mexico, Puerto Rico, and the US Virgin Islands.
Western Air Defense Sector
Southeast Air Defense Sector
Northeast Air Defense Sector
Canadian North American Aerospace Defense Command Region
480 Intelligence Wing
67 Information Operations Wing
Air Force Information Warfare Center
National Air and Space Intelligence Center
Defense Airborne Reconnaissance Office
Joint Task Force
National Security Agency
Ground Theater Air Control System
Rivet Joint
Joint Surveillance Target Attack Radar System
Airborne Warning and Control System
U-2
The Army uses "Lump Constant" delay line design, the Air Force uses "Coaxial" delay line design
The Army uses "Coaxial" delay line design, the Air Force uses "Lump Constant" delay design
The Army uses "Beam Forming" delay line design, the Air Force uses "Coaxial" delay line design.
There is no difference.
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