3. INTRODUCION
• A Word to the Owner of the FR-8xx2
Marine Radar
• FURUNO Electric Company thanks you for
purchasing the FR-8xx2 series Colour LCD
Marine Radar.
• We are confident you will discover why the
FURUNO name has become synonymous with
quality and reliability
4. RADAR
• Radar is a word derived from "radio detection
and ranging". It is of great practical
• value to the navigator in the piloting waters.
Radars are not only used to locate
• navigational aids and to perform radar
navigation, but they are also used for tracking
• other vessels in the vicinity so as to avoid risk of
collision.
5. Factors Affecting Radar
Interpretation
• Radar’s value as a navigational aid depends
on the navigator’s understanding its
• characteristics and limitations. Whether
measuring the range to a single reflective
6. MARINE RADAR USES
• Marine radars are usually short range radars that
are used by ships to pinpoint locations about other
ships and land in the area.
• The frequencies with which these radars are
operated are known as x-band or s-band
frequencies.
• The x stands for secret, as the ship radar was mainly
a hidden frequency while used for the purpose of
tracking ship during the Second World War.
• The s stands for small range in the second type.
7. REMOTE CONTROLLER
• The optional remote controller provides armchair
control over transmit, standby, range and display
• Press the power key at the top of the control panel to
turn the radar on, and the lamp to
• its left lights. To turn the radar off, press and hold
down the key until the screen turns black.
• At power-up, the start-up screen appears, showing
the model name, program number and the
• results of the ROM and RAM check, OK or NG (No
Good)
8. • If an NG appears, try pressing any key other
than the power key to proceed. If normal
operation is not possible, contact your dealer for
advice.
• After the tests are completed, the bearing scale
and a digital timer appear.
• The digital timer counts down the time
remaining to warm up the magnetron, which
transmits the radar pulses.
9. • This warm up takes 180 sec. (FR-8252) or 90 sec. (FR-
8062, FR-8122)After the timer has counted down to
0:00, the STBY screen appears, the appearance of which
choose according to your needs.
• The radar is now ready to transmit radar pulses. Press
the STBY/TX key to transmit radar pulses.
• The STBY/TX key toggles between stand-by and
transmit status.
• The antenna rotates in transmit condition and is
stopped in standby.
• Because the magnetron ages with use it is highly
recommended to set the radar in standby
10. Operation of the Marine Radars
• There is an antenna on the top of the radar that
continuously rotates and flashes.
• The flashes actually are frequency beams that are
transmitted from the radar to find out whether there any
objects present in the path of the ship
• The frequency and the time taken by the flashes to
return (reflections) to the radar receiver of the ship helps
to find out whether the route of the boat can be
continued with or not.
• On the display screen, the reflections can be seen so that
identifying the actual distance of the objects can be even
more easy.
11. Search and Rescue Transponder
(SART)
• SART or Search and Rescue Transponder, is an
extremely vital equipment on the ship as it performs the
job of a signal-man.
• SARTs are made of waterproof components which
protects it against damage by water.
• SARTs are of use in ships, lifeboats and life rafts.
• They are the most supportive machines in case of an
unprecedented emergency.
• SARTs are designed to remain afloat on water for a long
time in case the vessel finds itself submerged in water.
12. • The bright colour of SART’S enables their quick
detection, whereas the combination of
transmitter and receiver enables it to transmit as
well as receive radio signals.
• SART machines have been instrumental in
rescuing several crafts and ships by reacting to
the search signal sent from an X-band radar,
typically of 9 GHz.
13. RADAR REFLECTORS
• Marine radar reflectors are an important device that
are fitted in boats especially in today’s times.
• when there is a constant threat of boats, ships, and
yachts entering unknown water borders.
• Boats that are made of fibreglass do not reflect the
radar pulses; this could cause unwanted collisions
between boats or with ships.
• For this reason radar reflectors are designed
specifically to help boats get located and avert any
untowardly accident.
14. ARPA
• The availability of low cost microprocessors and the
development of marine radar systems.
• Radar manufactures used this technology to create
the Automatic Radar Plotting Aids (ARPA).
• ARPAs are computer assisted radar data processing
systems which generate predictive vectors and other
ship movement information.
• The International Maritime Organization (IMO)
amending the International Convention of Safety of
suitable automated radar plotting aids(ARPA).
15. AUTOMATIC SUPPRESSION OF SEA
AND RAIN CLUTTERS
• If neither sea clutter or rain clutter are sufficiently
suppressed in spite of adjustment of respective controls,
turn on the automatic anti clutter feature to suppress
them.
• A/C AUTO appears at the top left corner when this
feature is turned on.
• Press the MENU key to open the menu.
• Choose the Echo menu and press the ENTER key.
• Choose Auto Anti Clutter and press the ENTER key.
• Choose Off or On as appropriate and press the ENTER
key.
• Press the MENU key to close the menu
16. Factors Affecting Radar
Interpretation
• Marine radars are usually short range radars that
are used by ships to pinpoint locations about other
ships and land in the area.
• The frequencies with which these radars are
operated are known as x-band or s-band
frequencies.
• The x stands for secret, as the ship radar was mainly
a hidden frequency while used for the purpose of
tracking ship during the Second World War.
• The s stands for small range in the second type.
17. OPERATIONAL OVERVIEW
• Do one of the following depending on the zoom mode in use.
• Relative or true zoom mode
• Use the trackball to place the cursor where you want to zoom
and press the ENTER key.
• The zoom cursor is shown with solid lines and is fixed at the
location chosen. Each press of the zoom key enables or
disables the zoom cursor.
• The zoom cursor is shown with dashed lines when it is active
and solid lines when it is inactive.
• To quit zoom, press the zoom key to show the zoom cursor
with dashed lines and press the CANCEL/HL OFF key.
18. CONCLUSION
• Thus the marine radar is discussed with all the
essential requirements and they were explained
in detail.
• The marine radar is used in many ways to detect
many problems in the sea area and is the best
way in radar technology.
