ROU written exam prep
When looking at the E-R-M triangle on a EM vector
MOBOARD, which vector represents the
contacts true course and speed?
What is the most crucial information CPA- gives the highest risk of collision
provided by the ERM plot/ MOBOARD?
What are the "Big 7 Solutions" of an ERM DRM, SRM, BCPA, TCPA, RCPA, CC, CS
(Speed) triangle?
What is the "rule of thumb" for 1/2 range scale in use. This is the minimum distance a target can be detected
determining the appropriate plotting RADAR. 1/2 the Pulse Width
period to use on RADAR?
10cm wavelength
What are the characteristics of a S-Band 2900-3100 MHz
RADAR? wavelength, frequency, and 3 Slightly longer horizon
characteristics Less Sea Clutter
Better in Precipitation
, ROU written exam prep
3 cm wavelength
9300-9500 MHz
What are the characteristics of a X-Band
Better target response/ accuracy
RADAR? wavelength, frequency, and 4
Better Bearing Discrimination
characteristics
Navigation
Search and Rescue
RADAR control used typically for heavy seas. Suppresses/Reduces unwante
What is STC (Sensitivity Time Control)? clutter from the inner ranges (Limited to 4NM scope). May lose close weak
targets if you over-suppress.
RADAR control used to reduce rain clutter/ heavy weather. Impats all radar r
What is FTC (Fast Time Constant)?
ranges. May lose weak targets if you over suppress
Electronic Bearing LINE- graphing tool to measure bearing on radar display.
What is an EBL and how do you use it
the bearing on the contact tip/ center mass.
Variable RANGE Marker- graphical CIRCLE used to indicate range on a rada
What is a VRM and how do you use it display (like the rings). Place it on the inner edge of the contact with the oute
edge of the range marker ring
T/F Is RADAR range more accurate than True
RADAR bearing?
When looking at the E-R-M triangle on a EM vector
MOBOARD, which vector represents the
contacts true course and speed?
What is the most crucial information CPA- gives the highest risk of collision
provided by the ERM plot/ MOBOARD?
What are the "Big 7 Solutions" of an ERM DRM, SRM, BCPA, TCPA, RCPA, CC, CS
(Speed) triangle?
What is the "rule of thumb" for 1/2 range scale in use. This is the minimum distance a target can be detected
determining the appropriate plotting RADAR. 1/2 the Pulse Width
period to use on RADAR?
10cm wavelength
What are the characteristics of a S-Band 2900-3100 MHz
RADAR? wavelength, frequency, and 3 Slightly longer horizon
characteristics Less Sea Clutter
Better in Precipitation
, ROU written exam prep
3 cm wavelength
9300-9500 MHz
What are the characteristics of a X-Band
Better target response/ accuracy
RADAR? wavelength, frequency, and 4
Better Bearing Discrimination
characteristics
Navigation
Search and Rescue
RADAR control used typically for heavy seas. Suppresses/Reduces unwante
What is STC (Sensitivity Time Control)? clutter from the inner ranges (Limited to 4NM scope). May lose close weak
targets if you over-suppress.
RADAR control used to reduce rain clutter/ heavy weather. Impats all radar r
What is FTC (Fast Time Constant)?
ranges. May lose weak targets if you over suppress
Electronic Bearing LINE- graphing tool to measure bearing on radar display.
What is an EBL and how do you use it
the bearing on the contact tip/ center mass.
Variable RANGE Marker- graphical CIRCLE used to indicate range on a rada
What is a VRM and how do you use it display (like the rings). Place it on the inner edge of the contact with the oute
edge of the range marker ring
T/F Is RADAR range more accurate than True
RADAR bearing?
