SAMYUNG SAT-100 ATUT-449H Product Description

Overview

SAMYUNG SAT-100 ATUT-449H is an MF/HF antenna tuner (antenna coupler) for Samyung marine SSB radio communication systems. SAMYUNG SAT-100 ATUT-449H automatically matches the impedance between the MF/HF transceiver and the external antenna, achieving stable RF signal transmission across different frequency bands. SAMYUNG SAT-100 ATUT-449H is a dedicated marine communication spare part, commonly matched with SRG-1150DN and SRG-3150DN transceivers for shipboard GMDSS radio systems.

Features

SAMYUNG SAT-100 ATUT-449H supports automatic impedance matching for long wire MF/HF antennas and covers marine HF communication frequency range. It has built-in tuning detection and status indicator lamps to display tuning success or fault status on site. The internal high-power matching network can handle continuous RF transmission under normal marine working conditions. SAMYUNG SAT-100 ATUT-449H adopts marine-grade sealed housing, with moisture-proof, salt-spray resistant and shock-resistant performance suitable for engine room and deck cabinet installation. It communicates with the matched Samyung HF transceiver via dedicated control lines to synchronize frequency selection and trigger auto-tuning. ATUT-449H is the internal assembly identifier for spare part traceability and version distinction. SAMYUNG SAT-100 ATUT-449H can complete direct replacement during maintenance to restore the SSB communication function of the vessel.

Specs

Brand: SAMYUNG Model: SAT-100 Assembly code: ATUT-449H Product category: MF/HF automatic antenna tuner Compatible transceiver: SRG-1150DN, SRG-3150DN Application: Marine SSB radio communication Function: Automatic antenna impedance matching Environment suitability: Marine salt spray and vibration environment Installation: Installed near HF antenna or communication cabinet

Principle

SAMYUNG SAT-100 ATUT-449H receives frequency information from the HF transceiver. Its internal detection circuit samples the RF impedance at the antenna end. The control unit adjusts the built-in capacitor and inductor network automatically to match the transceiver output impedance. When the standing wave ratio meets the qualified range, the tuning process completes and locks the matching parameters. SAMYUNG SAT-100 ATUT-449H reduces RF reflection loss and ensures reliable transmitting and receiving of MF/HF voice and DSC signals. If the antenna circuit is open or shorted, the tuner will report a tuning failure alarm to the radio console.

Applications

SAMYUNG SAT-100 ATUT-449H is widely used in marine MF/HF communication systems. It is installed on cargo ships, fishing vessels and offshore platform radio stations that are equipped with Samyung SRG series HF radios. It is used for long-distance marine voice communication, DSC distress alert and NBDP data communication. It is a key spare part for ship radio survey, equipment overhaul and SSB system maintenance.