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Coast Guard field changes are numbered consecutively starting with what number?
91
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Navy field changes are numbered consecutively starting with what number?
1
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How many Navy class designations are there for field changes?
3
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Where can you find the published field changes to Navy and commercial equipment?
Equipment Systems Information Bulletin (ESIB)
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What is issued when minor mistakes have been made in a field change bulletin?
Errata sheet
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What is a modification consisting of component changes to modules, subassemblies, or equipment and may be provided as a part of a Type 1 or Type 3 field change?
Emergency alteration
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What is a multi-cable transit (MCT) device?
- A modular system that utilizes standard units and dimensions to allow
- flexibility and compatibility with various numbers and sizes of cables.
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Where would you find complete installation and assembly instructions for multi-cable transit devices?
DOD-STD-2003 (NAVY)
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In cable tag number 2R - ES403 what does the 2 represent?
Identical system number
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Which cable function marking stands for radar remote indicators?
ER
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Which cable function marking stands for Surface search radar?
ES
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Which cable function marking stands for radio teletype?
RY
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A spare conductor shall have _______ written on the conductor tag?
Spare
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NAVSEA SE000-00-____________ may be used for test methods and guidance for testing of coaxial cables.
EIM-130
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The guidelines listed in __________ Section 5-2.10 for Quality Control inspections of waveguides shall apply to rigid coaxial transmission lines.
EIM-110
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What 2 tests shall be conducted on all flexible and semi-rigid coaxial cables?
Attenuation and VSWR
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When shall Cables installed in shipboard electronic systems receive visual inspections, continuity checks and insulation resistance tests?
Before energizing of equipment
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Insulation resistance measurements for multiconductor cables with conductors of less than 1700 circular mil area in size shall have a minumum resistance value of _______
50,000
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Andrew Corporation includes ________with each HELIAX cable connector.
specific installation instructions
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Coax cables with polyethylene or polytetrafluorethylene (Teflon) dielectric and a length of 100 feet (or less) shall have an insulation resistance greater than or equal to ______ megaohms?
40,000
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Cables not meeting the minimum insulation resistance values shall be ____________.
Replaced
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A complete field change package consists of the field change bulletin and a __________.
Field change parts kit
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If the service-entrance conductor is copper wire size 1, what size copper wire should be used for the grounding electrode conductor for the AC system?
Wire size no. 6
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If the current rating of the overcurrent protection device is 500, what is the minimum copper wire size for the equipment-grounding conductor?
Wire size no. 2
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Roof and down conductors must be a separate ________ cable, continuous, unspliced and installed in as straight a line as possible in order to provide a low-impedance path from the highest conductive surface (air terminal) to the main ground connection point.
0000 AWG
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Sending a message on several frequencies at once is an example of which of the transmission type?
Frequency Diversity
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What type of diversity uses physically separated transmit and receive antennas to improve communications?
Space
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One terminal in a link has its equipment setup in simplex. The other terminal is using two channels or frequencies in a configuration that allows sending and receiving of different messages at the same time. These two terminals working together make up what mode of operation?
Semi-Duplex
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A transmitted electromagnetic wave enters an antenna, induces a voltage into it, and passes that voltage to a receiver. What is this chain of events called?
Reception
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When a receiver separates the audio frequencies from the radio-frequency carrier it is performing what basic function?
Detection
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When a receiver picks one frequency out from all other frequencies, it's performing what basic function?
Selection
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The receiver action of converting electrical energy to a usable format, such as sound, is an example of what basic function?
Reproduction
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What measurement provides an indication of the ability of a receiver to reproduce weak signals?
Sensitivity
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Overall sensitivity of a receiver is limited by which of the following factors?
Noise
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How is a receiver's ability to reject unwanted signals and receive desired signals determined?
Selectivity
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The IF in a receiver is produced by what method?
Heterodyning
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The process of heterodyning takes place in which receiver circuit?
Mixer
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The process of simultaneous transmission of several intelligible signals on the same frequency during the same period of time is called?
Multiplexing
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Which category of electromagnetic interference includes interference generated by electrically charged raindrops?
Natural
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What method of reducing RF burn hazards is the most useful and widespread technique used?
Bonding and grounding all metallic objects
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The greatest hazard from thermal effects appears to come from equipment operated in what frequency range?
1-3 GHz
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You have been working on a piece of equipment and your eyes have been exposed to high-intensity microwaves. What eye problem may occur?
Cataracts
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In a line of sight communications system, propagation is affected by what layer of the atmosphere?
Troposphere
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For lower frequency communication systems that utilize sky wave propagation for signal transmission, propagation is affected by what layer of atmosphere?
Ionosphere
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Who was awarded both the Medal of Honor and Gold Life Saving Medal?
Marcus Hanna
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What is the reference for Current Ship's Maintenance Project (CSMP)'s?
NAVENG 9000.6D
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What is not a factor on control/multi-conductor cable?
Impedance
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How often is portable test equipment checked?
Quarterly
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Tie wraps on a cable bundle should be how far apart?
2.5X diameter not more than 10 Inch
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Category B Navy FBR's should be mailed to?
FTSC
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What reference is used for inspecting a workbench?
NEC
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What should the max resistance be between the metal case and ground on a power tool?
1 ohm
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A workbench breaker should be rated at how many amps, according to the Electronics Manual?
20 A
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How are cables run on a cutter for battle damage reasons?
Inside Frames and Along Cable trays
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How often are direction finders calibrated?
Every 12 Months
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What determines the weekly PMS schedule?
Quarterly Schedule
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What are the different cable classifications?
Active, Passive, Susceptible
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A direction finder must be re-calibrated if it is off by how many degrees?
3
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How long can someone work inside the PEL while a mini-loop antenna is energized before injury is inflicted?
6 Minutes
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Multi-conductor cable is bad when measured less than how many ohms between conductors?
50 Kohm
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Guy wire turnbuckle should have a what through it?
A Safety Wire
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In a earth electrode subsystem how can you achieve a better ground?
Drive the grounding rods deeper
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High voltage signs need to be posted when voltages are over?
500 V
-
How close can you be to electronics with jewelry on?
4 FT
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How often is the lightning protection subsystem to be visually and mechanical?
2months (bi-monthly) and annually
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Navy preventative maintenance card that tells you specifically how to do something?
MRC (maintenance requirement card)
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What type of field change furnishes documentation only?
Type 2
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What is the advice code for an 0C turn in items?
5G
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How long does it take a radar pulse to travel one mile (back and forth)?
12.36 micro sec
-
What is the speed of RF transmissions?
Speed of light 186,000 miles/sec
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How far is a radar mile?
2x nautical mile
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In feet how far is a statute mile/nautical mile?
Statute mile is 5,280 feet…….NM is 6,080 feet
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What is the form number for an allowance change request?
CG 5323
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What type of antenna is operated with one end grounded?
Marconi
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Who maintains the CSMP's on cutters?
EO
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To make changes to a CASREP, what action do you need to do?
Issue casrep update
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Fire control tracking radar usually produces what type of beam?
Narrow and Circular
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What type of servo has a feedback loop?
Closed loop
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What form is used to order publications?
CG 4428
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How many directorates are there?
11
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How many units work directly for headquarters?
35
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Where are ship's configuration change form OPNAV 4790/CK sent?
SFLC
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What four basic functions must a receiver perform?
Reception, Detection, Selection, Reproduction
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What are the four basic receiver characteristics?
Sensitivity, Noise, Selectivity, Fidelity
-
What are the three basic parts of an Optical Fiber Cable?
Core, Cladding, and Coating
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Which type of EMI is classified as natural interference?
Precipitation and Static Electricity
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Distorted audio on Receiver is caused by?
Over-modulation
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On ship's drawings, what is identified by sequential uppercase letters?
Revision
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What is the preferred ground for Coast Guard Communications-Electronics (C.E.) facilities?
Multi-point
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What governs tag-out procedures at shore units?
OSHA
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What is the max resistance to ground for an earth electrode subsystem in a non-communications electronics facility?
25 Ohms
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What does MIP stand for in regards to Preventive Maintenance System (PMS)?
Maintenance Index Page
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The 3 types of EMI are?
Man-made, Inherent, Natural
-
Impedance between the ground buss and the fault protection subsystem shall be less than _____ Ohms?
.1
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Impedance between the ground buss and the fault protection subsystem shall be less than _____ A?
.1
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When discharging a lithium battery how long after discharge is the battery still dangerous _____ Min?
30
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When going into a yard period what type of PMS is required?
LU (Lay Up)
-
What fund code is used for small arms ordinance AFC-____?
30
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Unit training shall be scheduled how far in advance?
1 Month
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What type of inventory is required for OM&S with a unit price of less than $1000 and allowance, SIM and non-SIM materials?
Scheduled
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