Marine Device : MF-HF, ATU, COUPLER, ANTENNA TUNER UNIT
Manufacturer : SAMYUNG
Type / Model : SAT-100
The SAMYUNG SAT-100 Antenna Tuning Unit (ATU) is a marine-grade automatic antenna tuner designed for high-frequency (HF) and medium-frequency (MF) radio systems, ensuring optimal impedance matching between the transceiver and antenna for enhanced signal clarity and transmission efficiency.
🔧 Key Specifications
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Frequency Range: 1.6 MHz to 27.5 MHz, covering all marine MF/HF bands.
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Power Handling: Supports up to 150W PEP for models paired with 150W transceivers like SRG-1150DN; up to 250W PEP for models paired with 250W transceivers like SRG-1250DN.
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Power Supply: 24 VDC, typically sourced directly from the MF/HF transceiver or a dedicated power supply unit.
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Tuning Time: Typically very fast, often within 1 to 15 seconds, depending on the frequency band change and initial mismatch.
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Mounting Location: Designed for outdoor installation, typically near the base of the whip antenna to minimize coaxial cable loss between the tuner and antenna.
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Construction: Robust, marine-grade, weatherproof aluminum or durable plastic enclosure.
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Ingress Protection (IP) Rating: Likely IP66 or IP67, indicating high resistance to dust and powerful jets of water/temporary immersion, suitable for exposed marine environments.
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Vibration Compliance: Compliant with IEC 60945 (marine navigational equipment – general requirements).
⚙️ Functionality
The SAT-100 automatically adjusts the antenna impedance to ensure it matches the transceiver, which improves signal transmission and reception efficiency.
🛠️ Installation and Maintenance Tips
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Installation: Ensure proper grounding to the vessel’s hull for optimal performance and safety.
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Maintenance: Regularly inspect the unit for signs of wear or corrosion, especially in marine environments.
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Compatibility: Verify compatibility with your specific transceiver model to ensure optimal performance.
