What are the four receiver functions?
What are the four receiver characteristics?
What is heterodyning?
The principle of beating two frequencies together to get an intermediate frequency
Used to reduce interface, it widens the interference pulse.
What are the differences between Marconi and Hertz antennas?
: Quarter Wave & Grounded ( can be installed on sand)
: Half Wave
What is a main bang?
The area of the radar image closest to the vessel which can not be seen due to the pulse width.
What locations can an antenna safety disconnect switch be installed?
Below antenna platform, on or near the base of the mast, or in pilothouse.
What is scintillation?
A target maneuvers and RF bounces off different parts of the target which possibly causes random reflectivity and tracking errors.
Define Doppler effect.
From a stationary point the radar strikes a moving object. The result is a change in frequency of the return RF.
What are the components of the AN/SPS-50?
Processor Unit (RPU-013)
Monitor Unit (MU-201CR/MU-231CR)
Control Unit (RCU-014)
What is the working load limit for climbing safety gear?
How tall must a tower be before it is designated a tall tower?
CPR begun within 4 minutes revives _ out of 10 people.
What are the three main hazards of working aloft?
When climbing a safety must be within ___ ft of the main climber.
What is the effective range of 15 lb CO2 extinguisher?
What is the primary cause of casualties?
What are the seven steps of ORM?
Evaluate Risk v Gain
For hearing protection what is the dB range for single, double, and impact (for single)?
What are the symptoms of electric shock?
Face pale or bluish
Pulse weak or absent
Who was the keeper of Lime Rock Lighthouse?
Who was the author of Roots and the autobiography of Malcolm X?
Alex P. Haley
What cutter made the first naval capture of WWII?
What were the original 10 Revenue Cutters?
When was the rank of CPO created?