Furuno FAR-28 Series - User Manual

Questions and Answers

C
colton96Sep 23, 2025
What to do if Furuno FAR-28 Marine Radar target not tracked correctly?
- D
  Daniel HallSep 23, 2025
  If a target is not being tracked correctly, adjust the A/C SEA and A/C RAIN controls.
M
Marcus MunozAug 25, 2025
What to do if Furuno FAR-28 Marine Radar range changed but radar picture does not change?
- K
  Keith LeachAug 25, 2025
  If the range is changed but the radar picture does not change, try hitting the RANGE [+] and [-] keys (or RANGE box) several times. If that does not work, turn the power off and on again to see if the problem might be video freeze up. If the issue persists with a keyboard-type control unit, replacement of the keypad may be required.
C
christopher69Aug 25, 2025
What to do if Furuno Marine Radar picture not updated or picture freeze?
- A
  Amy HartmanAug 26, 2025
  If the Furuno Marine Radar picture is not updating or freezes, turn the power off and on again to restore normal operation.
S
Steve AllenAug 27, 2025
What to do if Furuno FAR-28 Marine Radar range changed but radar picture not changing?
- F
  fernandezbrianaAug 27, 2025
  If the range is changed but the radar picture is not changing, try pressing the RANGE [+] and [-] keys several times. If that doesn't work, try turning the radar off and on again. If the issue persists with a keyboard-type control unit, replacement of the keypad may be required. If that does not resolve the issue, the SPU board may need to be replaced.
K
Katie LewisAug 27, 2025
Why Furuno FAR-28 Marine Radar marks, indications and noise appear but no echo?
- J
  Jonathan ParkerAug 27, 2025
  If marks, indications, and noise appear but there is no echo, the Tx high voltage protection circuit may have activated. Reset the power to restore normal operation.
N
Nathan WilcoxSep 13, 2025
Why Furuno FAR-28 Marine Radar data and marks not displayed in Transmit status?
- L
  Laurie SmithSep 13, 2025
  If data and marks are not displayed in Transmit status, replace the SPU board.
J
Justin KellySep 12, 2025
Why Furuno FAR-28 Marine Radar incorrect orientation of picture?
- S
  Stefanie McknightSep 12, 2025
  If the picture orientation is incorrect: 1. The message HDG SIG MISSING appears when the heading pulse is not received during transmitting. 2. Replace the gyro interface.
C
Charles GreenSep 12, 2025
Why Furuno FAR-28 Marine Radar poor discrimination in range?
- P
  parkscandiceSep 12, 2025
  If there is poor discrimination in range, it may be due to an improper setting of A/C SEA. If A/C SEA is only seen at a very close range, suspect an inaccurate frequency of the reference oscillator.
M
Mrs. Maria HuangSep 4, 2025
What to do if Furuno FAR-28 Marine Radar power turned on but radar does not operate at all?
- J
  johnsondannySep 4, 2025
  If the power is turned on but the radar does not operate at all: 1. Replace the blown fuse. 2. Correct the wiring and input voltage. 3. Replace the power supply board.
W
William FrancoSep 2, 2025
What to do if Furuno FAR-28 Marine Radar antenna not rotating?
- W
  William HallSep 2, 2025
  If the antenna is not rotating: 1. Replace the antenna drive mechanism. 2. Press the relay reset button.

Summary

IMPORTANT NOTICES

General

General warnings, copyright, and manual usage guidelines.

SAFETY INSTRUCTIONS

DANGER

Identifies situations that could cause death or serious injury if not avoided.

WARNING

Highlights potentially hazardous situations that could result in death or serious injury.

RADAR OPERATION

1.1 Turning on the Power

Step-by-step guide to powering on the radar system and understanding the warm-up process.

1.3 Control Unit

Details the functions and types of control units available for operating the radar.

1.16 Adjusting the Sensitivity

Guide on using the gain control to adjust receiver sensitivity for optimal radar picture clarity.

TARGET TRACKING (TT)

3.1 Usage Precautions

Important warnings and cautions regarding the reliance on and use of the Target Tracking system.

3.5 Automatic Acquisition

Details how to enable and configure automatic acquisition of radar targets.

3.13 TT Collision Alarm (CPA, TCPA)

Describes the collision alarm function, its settings, and how it helps prevent collisions.

MAINTENANCE, TROUBLESHOOTING

6.1 Periodic Maintenance Schedule

Outlines essential regular checks and maintenance tasks for optimal radar performance.

6.6 Easy Troubleshooting

Provides common troubleshooting procedures for restoring normal radar operation.

6.7 Advanced-level Troubleshooting

Guides qualified personnel on diagnosing and resolving complex hardware and software issues.

SPECIFICATIONS OF MARINE RADAR;ARPA

1. ANTENNA RADIATORS

Details the types, beam width, sidelobe attenuation, and polarization of antenna units.

3. DISPLAY UNIT

Lists specifications for the display units, including screen size, resolution, and effective radar diameter.

5. POWER SUPPLY

Details the power supply requirements and ratings for various radar components.

Furuno FAR-28 Series Specifications

General

Range Scales	0.125 to 96 nautical miles
Range	96 nautical miles
Transmitter Output Power	25 kW
Power Output	25 kW
Power Supply	24 V DC
IMO Compliance	Yes
Rotation Speed	24 or 48 rpm
Antenna Type	Slot array
Antenna Length	6 ft (1.8 m), 8 ft (2.4 m), 12 ft (3.6 m)