Marine Device : MF-HF, CONTROL UNIT
Manufacturer : SAILOR, DEBEG, SAM
Type / Model : HC-4500B, DEBEG 3105B
SAILOR HC‑4500B / DEBEG 3105B MF/HF DSC Control Unit (Display)
Overview
The HC‑4500B (also marketed as DEBEG 3105B) is the operator’s control/display unit designed for the Sailor System 4000 MF/HF DSC radiotelephone system. It serves as the interface between the vessel’s radio communications system and the operator, supporting full voice, digital selective calling (DSC) and telex (NBDP) operations for medium and high‑frequency maritime communication bands.
Key Features
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Integrated for use with the Sailor System 4000 MF/HF radio (150 W / 250 W / 500 W versions).
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Graphic LCD display with soft‑key operation and menu‑guided interface for ease of use in telephony / DSC / radiotelex modes.
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Built‑in DSC watch‑keeping receiver for distress, urgency and safety alerts, plus full DSC protocol support (ITU‑R M.493, M.541 etc).
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Telex (NBDP) capability: interfaces to printer/keyboard or data terminal for automated telex traffic.
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Supports automatic UTC time and vessel position integration when connected to GPS/navigation system.
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Compact operator panel suitable for bridge mounting; typical dimensions for control unit: width ~200 mm, height ~100 mm, depth ~95 mm; weight ~1 kg.
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24 V DC power supply (nominal), designed for maritime installations.
Applications & Benefits
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Ideal for vessels requiring reliable MF/HF communication and DSC compliance (e.g., for GMDSS sea‑areas A2/A3).
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Enables centralized control of the MF/HF radio system from the bridge, with visual feedback and alert indication for safety critical operations.
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The menu‑driven user interface reduces training/complexity and improves operational reliability.
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Because the control unit is separate from the transceiver and antenna tuning unit, it supports flexible installation in the bridge console while radio/ATU remain remote.
Installation & Compatibility Notes
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Designed to mount as the operator interface of the Sailor System 4000 MF/HF series. Ensure compatibility with the matching transceiver (150 W / 250 W / 500 W) and automatic antenna tuning unit (ATU) as part of the system.
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Ensure wiring for DSC distress/urgent call interface, NMEA 0183 GPS/position input, printer or telex terminal if used, and proper power feed (24 V DC) per the installation manual.
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The product range is listed as discontinued by Sailor, so sourcing should consider re‑conditioned units or spare stock.
Why It Matters
The control unit serves as the command centre for the MF/HF radio station: it presents the status, enables ease of mode switching (telephony, DSC, telex), ensures the vessel remains in DSC watch, reduces operator error through intuitive design, and supports compliance with maritime safety regulations. Upgrading or replacing a failing display/control panel is essential for maintaining full system integrity and operational readiness.
