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Miguel G
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Decks in this class (50)
(A)Element 8-1 Marine RADAR Systems
Choose the most correct statement...,
Which of the following has no eff...,
What type of transmitter power is...
6
cards
(A)Element 8-2 Distance and Time
A radio wave will travel a distan...,
One radar mile is how many micros...,
Radar range is measured by the co...
6
cards
(A)Element 8-3 Frequency and Wavelength
Frequencies generally used for ma...,
Practical radar operation require...,
An s band radar operates in which...
6
cards
(A)Element 8-4 Power, Pulse Width, PRR
A pulse radar has a prf of 400 hz...,
A shipboard radar transmitter has...,
A pulse radar transmits a 5 micro...
7
cards
(A)Element 8-5 Range, Pulse Width, PRF
For a rang of 5 nautical miles th...,
For a range of 100 nautical miles...,
The minumum range of a radaar is ...
6
cards
(A)Element 8-6 Pulse Width-Pulse Repetition Rates
If the prf is 2500 hz what is the...,
If the pulse repetition frequency...,
The pulse repetition rate refers to
6
cards
(A)Element 8-7 Components
What component of a radar is repr...,
A basic sample and hold circuit c...,
When comparing ttl and a cmos nan...
6
cards
(A)Element 8-8 Components-2
The basic frequency determining e...,
Which of the following is not a m...,
When comparing ttl and cmos logic...
6
cards
(A)Element 8-9 Circuits-1
Blocking oscillators operate on t...,
The block diagram of a typical ra...,
The phantastron circuit is capabl...
6
cards
(A)Element 8-10 Circuits-2
10a1 in the circuit shown in fig ...,
If more light strikes the photodi...,
In the circuit shown in fig 8a6 w...
6
cards
(B)Element 8-11 Transmitting Systems
The magnetron is used to,
The purpose of a the modulator is to,
Which of the following statements...
6
cards
(B)Element 8-12 Magnetrons
High voltage is applied to what e...,
The characteristics of the magnet...,
What device is used as a transmit...
6
cards
(B)Element 8-13 Modulation
In a solid state radar modulator ...,
The modulation frequency of most ...,
A shipboard radar uses a pfn driv...
7
cards
(B)Element 8-14 Pulse Forming Networks Modulation
The pulse developed by the modula...,
Pulse transformers and pulse form...,
The purpose of the pulseforming n...
6
cards
(B)Element 8-15 TR-ATR-Circulators-Directional Couplers -1
The ferrite material in a circula...,
In a circulator resonant cavity w...,
A ferrite circulator is most comm...
7
cards
(B)Element 8-16 TR-ATR-Circulators-Direction Couplers-2
The atr box,
When a pulse radar is radiating w...,
The tr box
6
cards
(B)Element 8-17 Time-Trigger-Synchronizer Circuits
What radar circuit determines the...,
The triggering sections is also k...,
Operation of any radar system beg...
6
cards
(B)Element 8-18 Power Supplies
An advantage of resonant charging...,
A,
A pulse width modulator in a swit...
6
cards
(C)Element 8-19 Receiving Systems
Which of the following statements...,
Logarithmic receivers,
Radar receivers are similar to
6
cards
(C)Element 3-20 Mixers
The diagram in fig 8c9 shows a si...,
In the receive mode frequency con...,
An rf mixer has what purpose in a...
6
cards
(C)Element 3-21 Local Oscillators
The error voltage from the discri...,
In a radar unit the local oscilla...,
What component of a radar receive...
6
cards
(C)Element 8-22 Amplifiers
Overcoupling in a radar receiver ...,
The usual intermediate frequency ...,
The if amplifier bandwidth is
6
cards
(C)Element 8-23 Detectors-Video Amplifiers
Which of the following statements...,
Video amplifiers in a pulse radar...,
In video amplifiers compensation ...
6
cards
(C)Element 8-24 Automatic Frequency Control-AFC
The afc system is used to,
A circuit used to develop afc vol...,
In the afc system the discriminat...
6
cards
(C)Element 8-25 Sea Clutter-STC
The stc circuit is used to,
The stc circuit,
Sea return is
7
cards
(C)Element 8-26 Power supplies
Prior to making power on mesaurem...,
A constant frequency switching po...,
The circuit shown in fig 8c10 is ...
6
cards
(C)Element 8-27 Interference Issues
One of the best methods of reduci...,
The primary cause of noise in a r...,
Noise can appear on the lcd as
6
cards
(C)Element 8-28 Miscellaneous
The purpose of the discriminator ...,
The mti circuit,
Where is the rf attenuator used i...
6
cards
(D)Element 8-29 Displays
Modern liquid crystal displays ha...,
Voltages used in crt anode circui...,
The purpose of the aquadag coatin...
6
cards
(D)Element 8-30 Video Amplifiers and Sweep Circuits
What are the usual signals to the...,
Which of the following would not ...,
The purpose of the sweep amplifie...
6
cards
(D)Element 8-31 Timing Circuits
Timing circuits are used to provi...,
The circuit that develops timing ...,
Which of the following functions ...
6
cards
(D)Element 8-32 Fixed Range Markers
Accurate range markers must be de...,
Range markers are determined by,
A gated lc oscillator operating a...
6
cards
(D)Element 8-33 Variable Range Markers
The variable range marker signal ...,
The purpose of the variable range...,
How is the variable range marker ...
6
cards
(D)Element 8-34 EBL, Azimuth and True Bearing
The purpose of the electronic bea...,
The electronic bearing line is,
Which of the following inputs is ...
6
cards
(D)Element 8-35 Memory Systems
In a digitized radar the 360 degr...,
While troubleshooting a memory pr...,
The term dram stands for
6
cards
(D)Element 8-36 ARPA-CAS
The ship s speed indication on th...,
What does the term arpa cas refer to,
Which of the following would not ...
6
cards
(D)Element 8-37 Display System Power Supplies
The display power supply provides...,
The display power supply provides...,
37d3 in a display system power su...
6
cards
(D)Element 8-38 Miscellaneous
The heading flash is a momentary ...,
The major advantage of digitally ...,
In order to ensure that a practic...
6
cards
(E)Element 8-39 Antenna Systems
Slotted waveguide arrays when fed...,
A typical shipboard radar antenna...,
Good bearing resolution largely d...
7
cards
(E)Element 3-40 Transmission Lines
The vswr of a microwave transmiss...,
The impedance total zo of a trans...,
If long length transmission lines...
6
cards
(E)Element 8-41 Antenna to Display Interface
The position of the ppi scope swe...,
On a basic synchro system the ang...,
What is the most common type of a...
6
cards
(E)Element 8-42 Waveguides-1
Waveguides can be constructed from,
A microwave transmission line con...,
Waveguide theory is based upon
6
cards
(E)Element 8-43 Waveguides-2
A rotary joint is used to,
Resistive losses in a waveguide a...,
43e3 a right angle bend in an x b...
6
cards
(F)Element 8-44 Equipment Faults-1
When you examine the radar you no...,
Range rings on the ppi indicator ...,
What would be the most likely def...
8
cards
(F)Element 8-45 Equipment Faults-2
A circuit card in a radar system ...,
A defective crystal in the afc se...,
The radar display has sectors of ...
6
cards
(F)Element 8-46 Equipment Failures-3
Silicon crystals are used in rada...,
In a radar unit if the crystal mi...,
An increase in magnetron current ...
6
cards
(F)Element 8-47 Equipment Faults-4
47f1 if the magnetron is allowed ...,
Targets displayed on the radar di...,
Loss of distant targets during an...
6
cards
(F)Element 8-48 Maintenance
A thick layer of rust and corrosi...,
The echo box is used for,
What should be done to the interi...
6
cards
(F)Element 8-49 Installation
Why is coaxial cable often used f...,
Radar interference to a communica...,
Why should long horizontal runs o...
6
cards
(F)Element 8-50 Safety
Choose the most correct statement...,
Before testing a radar transmitte...,
While making repairs or adjustmen...
6
cards
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ELEMENT 8 SHIP RADAR ENDORSEMENT
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