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3. Key Technical Specifications
| Parameter | Value / Description |
| Part Number | T65801811-9 |
| System Compatibility | BridgeMaster E (BME) 180, 250, and 340 series |
| Antenna Type | Compatible with 3cm (X-Band) and 10cm (S-Band) turning units |
| Input Voltage | 115 V or 230 V AC (Jumper Selectable) |
| Rotation Speed | Supports Standard (28 RPM) and High Speed (45 RPM) configurations |
| Frequency | 50 / 60 Hz |
| Mounting Type | Internal Chassis Mount (Turning Unit) |
| Weight | 1.45 kg (Approx.) |
| Compliance | IMO / IEC Marine Standards |
4. Product Introduction & Supply Chain Strategy
The Sperry Marine T65801811-9 is a critical motor control module designed for the BridgeMaster E series radar turning units. It regulates the drive motor to ensure consistent antenna rotation speeds, which is vital for accurate target heading and distance calculations in commercial maritime navigation.
From a supply chain perspective, the T65801811-9 is a high-criticality item. As the BME series transitions into a legacy lifecycle phase, securing New Surplus inventory is the only way to ensure 100% uptime. Refurbished motor controllers often suffer from dried-out electrolytic capacitors or fatigued relays due to years of constant vibration at sea. Choosing a New Surplus unit eliminates the risk of “secondary failure” and provides a significantly lower Total Cost of Ownership (TCO) compared to the emergency dry-docking costs associated with a failed radar during a vetting inspection.
- T65801811-9
- T65801811-9
5. Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
Ensure the radar system is powered down at the main distribution board and follow standard lock-out/tag-out procedures. Use a grounded ESD wrist strap before handling the T65801811-9. Critical Step: Document the existing jumper settings (LK1, LK2, etc.) and wire terminal positions on the old board using a high-resolution camera.
Stage 2: Removal
Carefully disconnect the wiring looms from the terminal blocks. Loosen the mounting screws securing the PCB to the turning unit chassis. Extract the board vertically to prevent any physical damage to the internal mounting standoffs.
Stage 3: Installation (Clone & Seat)
Verify that the jumpers on the new T65801811-9 match the old board exactly (e.g., 115 V vs. 230 V selection). Seat the module into the chassis and hand-tighten the mounting screws. Reattach all wiring connectors, ensuring no stray strands are bridging the terminals.
Stage 4: Power-On & Testing
Clear the turning unit of tools and personnel. Restore power and monitor the diagnostic LEDs on the T65801811-9. Verify that the antenna rotates at the correct RPM (Standard or High) without erratic speed fluctuations. Perform a “Handshake” check at the BridgeMaster E display console to confirm no motor drive alarms are present.
6. Firmware/Software Versions & Upgrade Notes
- Standard Compatibility: The T65801811-9 is designed for hardware-level motor control and is generally compatible with BME software versions 4.0 through 7.x.
- Firmware Lock: Most versions of this board utilize hard-coded logic chips. If replacing an older “-7” or “-8” revision with this “-9” revision, verify that the motor’s starting capacitor values align with the updated torque curves.
- Warning: Never attempt to adjust onboard potentiometers while the system is live without a calibrated oscilloscope, as improper voltage clipping can burn out the drive motor windings.
7. Frequently Asked Questions (FAQ)
Q: Is this board really brand new? Why is it labeled “Surplus”?
A: Yes, this is a New Surplus unit. “Surplus” simply means it was part of an overstock or a strategic spares package from a shipyard or authorized distributor that was never installed. It is in original factory condition, not used or pulled from a scrap vessel.
Q: Can I use the T65801811-9 for both X-Band and S-Band radars?
A: Yes. This controller is designed to be versatile across the BME range, provided you mirror the jumper configurations from your specific 3cm or 10cm turning unit.
Q: Why shouldn’t I just buy a cheaper refurbished version of this board?
A: Marine environments are brutal. Refurbished boards have already endured years of thermal cycling and salt-air exposure. A failure in the middle of a congested shipping lane can cost thousands in tug fees and delays. New Surplus gives you the original OEM MTBF (Mean Time Between Failure).
Q: Does this module require any specialized programming after installation?
A: No programming is required. It is a “parameter-set” board where the configuration is handled via physical jumpers and DIP switches. Once these are matched to your previous unit, it is essentially plug-and-play.
Q: What is the warranty on this New Surplus item?
A: We provide a full 12-month warranty, which is significantly longer than the 30 or 90 days typical of refurbished “grey market” parts.
