Subelement F
Installation, Maintenance & Repair
Section 48
Maintenance
A thick layer of rust and corrosion on the surface of the parabolic dish will have what effect?
-
No noticeable effect.
-
Scatter and absorption of RADAR waves.
-
Correct AnswerDecrease in performance, especially for weak targets.
-
Slightly out of focus PPI scope.
This question does not yet have an explanation!
Register to add one
Tags: none
The echo box is used for:
-
Testing the wavelength of the incoming echo signal.
-
Correct AnswerTesting and tuning of the RADAR unit by providing artificial targets.
-
Amplification of the echo signal.
-
Detection of the echo pulses.
This question does not yet have an explanation!
Register to add one
Tags: none
What should be done to the interior surface of a waveguide in order to minimize signal loss?
-
Fill it with nitrogen gas.
-
Paint it with nonconductive paint to prevent rust.
-
Correct AnswerKeep it as clean as possible.
-
Fill it with a high-grade electrical oil.
This question does not yet have an explanation!
Register to add one
Tags: none
Which of the following is the most useful instrument for RADAR servicing?
-
Correct AnswerOscilloscope.
-
Frequency Counter.
-
R. F. Wattmeter.
-
Audio generator.
This question does not yet have an explanation!
Register to add one
Tags: none
A non-magnetic screwdriver should always be used when replacing what component?
-
TR tube.
-
Mixer.
-
Video amplifier.
-
Correct AnswerMagnetron.
Hint: magnet is in both the question and answer. KD9TIP
Last edited by jukesj01. Register to edit
Tags: none
What kind of display would indicate water in the waveguide?
-
Spoking.
-
Correct AnswerLarge circular rings near the center.
-
Loss of range rings.
-
Wider than normal targets.
This question does not yet have an explanation!
Register to add one
Tags: none
HamStudy.org™ is copyright 2024 Signal Stuff™, All rights
reserved.
View Privacy Policy | Get help with HamStudy.org™
View Privacy Policy | Get help with HamStudy.org™