SAILOR MF HF SYSTEM 4000

Marine Device : MF-HF

Manufacturer : SAILOR

Type / Model : SYSTEM 4000

SAILOR System 4000 MF/HF Radio System

Overview

The SAILOR System 4000 is a professional-grade MF/HF (mobile-frequency / high-frequency) marine radiotelephone system with built-in DSC (Digital Selective Calling) functionalities. It is designed for medium-to-long range voice and data communications, including GMDSS (Global Maritime Distress & Safety System) compliance. It supports versions with output powers of approximately 150 W, 250 W and 500 W PEP.

This system typically includes:

• A Control Unit (CU) or operator display/keyboard.

• A Transceiver Unit (TU) housing the radio-frequency transmit/receive circuitry.

• An Automatic Antenna Tuning Unit (ATU), enabling automatic matching of the antenna system.

• Handset, cables and accessories as required for installation and operation.

Key Features

• Wide frequency coverage: For the 150W variant, the frequency range is 150 kHz up to 30 MHz.

• Built-in DSC: The system includes a DSC watch receiver (2187.5 kHz) and supports distress alerts, automatic acknowledgement and monitoring.

• Pre-programmed ITU channels + user-programmable memory: For example, the 150W model supports 289 ITU HF telephony channels, 54 ITU MF channels (Region I), 40 ITU DSC pairs; plus user-programmable channels and stations.

• Automatic antenna tuning: The ATU matches antenna systems (e.g., 8–18 m whip/wire) and tunes quickly (0.5-8 s typical).

• Robust build: The transceiver unit and ATU designed for marine environment; components like the control unit are compact and suitable for installation in bridge consoles.

• Flexible installation: The control unit may be mounted up to 100 m from the transceiver unit depending on cable specifications.

• GMDSS-ready: Meets requirements for ship’s MF/HF stations, including distress/urgency communications.

Typical Technical Specifications (150 W Model)

• Output power: 150 W PEP ±1.4 dB into 50 Ω at 24 V supply.

• Frequency range: 1605 kHz to 30 MHz for transmit; receiver: 150 kHz to 30 MHz.

• Sensitivity (Receiver): e.g., SSB telephony ~0.7 µV, DSC ~0.3 µV.

• Supply voltage: 21.6-31.2 V DC nominal; optional external AC sup­ply 115/230 V AC with automatic switch-over.

• Operating temperature: approx. -20 °C to +55 °C.

• Dimensions (Transceiver Unit): approx. 390 mm width × 445 mm height × 127 mm depth; Weight ~17.5 kg (for 150W variant)

• Antenna tuning unit: nominal impedance 50 Ω; antenna types 8-18 m whip/wire; fully automatic tuning.

Typical Applications & Benefits

• Suitable for vessels requiring reliable MF/HF communication beyond VHF range: e.g., coastal and ocean-going ships, fishing vessels, workboats where long-range voice/data are required.

• The integrated DSC functionality supports the vessel’s compliance with GMDSS for sea areas A1/A2/A3.

• The modular design allows for installation flexibility: operator console on the bridge, transceiver in the radio room, ATU outdoors, yet fully integrated.

• The wide frequency range allows both medium-range (MF) and long-range (HF) communications, enabling ship-to-ship, ship-to-shore and distress calls over large distances.

Important Notes

• The System 4000 series is reported to be discontinued by SAILOR (150 W, 250 W & 500 W models).

• When sourcing second-hand or reconditioned units, ensure all software, DSC watch-receiver, antenna tuning unit and mounting accessories remain compliant and serviceable.

• Installation must follow manufacturer guidelines, including grounding/earthing, antenna installation, lighting and service clearances for marine environment.

• Because the series is discontinued, spare parts and service may require planning and sourcing from specialized suppliers.