What does 'Nav line exceeded' mean on my Koden MDC-7925P?
- LLarry SalasSep 6, 2025
If your Koden Marine Radar displays 'Nav line exceeded,' it means your own ship crossed the Nav line.
What does 'Nav line exceeded' mean on my Koden MDC-7925P?
If your Koden Marine Radar displays 'Nav line exceeded,' it means your own ship crossed the Nav line.
Why is COG/SOG unavailable on my Koden MDC-7925P Marine Radar?
If your Koden Marine Radar shows 'COG/SOG is unavailable,' this indicates that the COG/SOG data is not being inputted.
Why is HDG unavailable on my Koden MDC-7925P?
If your Koden Marine Radar displays 'HDG is unavailable,' it means that THS or HDT signals are not being inputted.
What does 'Antenna magnetron current abnormal' mean on my Koden MDC-7925P?
If your Koden Marine Radar displays 'Antenna magnetron current abnormal,' the magnetron may be at the end of its life, or the transmission high voltage fuse may be blown.
What does 'JB-35 not connected' mean on my Koden MDC-7925P Marine Radar?
If your Koden Marine Radar displays 'JB-35 not connected,' it means no communication between junction box JB-35 is available, and connector J3 may be disconnected.
Why does my Koden MDC-7925P Marine Radar display 'Change to reference antenna'?
If your Koden Marine Radar displays 'Change to reference antenna,' it means the set CCRP went beyond the radar display, and the reference has moved to the antenna position.
What does 'Tracked targets overload (95%)' mean on Koden MDC-7925P Marine Radar?
If your Koden Marine Radar displays 'Tracked targets overload (95%),' it means the number of tracking targets has exceeded 95.
What does it mean when a tracked target exceeded the CPA/TCPA limit on my Koden MDC-7925P?
If your Koden Marine Radar displays 'Tracked target exceeded the CPA/TCPA limit,' it means a tracked target has turned into a dangerous target.
What does 'Radar video abnormal' mean on my Koden MDC-7925P?
If your Koden Marine Radar displays 'Radar video abnormal,' it means the IF video from the scanner unit is not being received.
What does 'AIS no OS COG/SOG data' mean on Koden MDC-7925P?
If your Koden Marine Radar displays 'AIS no OS COG/SOG data,' it means that the own ship’s data necessary for AIS is not being input.
Safety guidelines for operating the radar system.
Essential steps and guidelines before installing the radar system.
Step-by-step guide for installing the radar antenna scanner unit.
Guidance on installing the radar display unit.
Accessing maintenance settings and changing the system password.
Initial setup and adjustment procedures for radar operation.
Key calibration steps for optimal radar performance.
Configuring input/output interfaces for external sensors and devices.
Setting up inputs for heading, speed, and position data.
Procedures for saving and loading system configuration data.
Understanding and clearing system alarms and operation notes.
Step-by-step guides and flow charts for diagnosing malfunctions.
Diagnosing problems related to power, display, and antenna unit.
Resolving issues with radar echoes, sensitivity, and data reception.
Troubleshooting AIS system errors and antenna unit failures.
Detailed steps for replacing the magnetron in RB808P and RB809P models.
| Power Supply | 12/24 V DC |
|---|---|
| Type | Marine Radar |
| Frequency | 9410 MHz (X-band) |
| Rotation Speed | 24 rpm |
| Display | LCD |











