Ensure optimal antenna performance with this Shortwave Standing Wave Meter, a reliable tool designed to accurately measure the resonant state and transmitter power of your antenna system. Crafted from durable alloy steel, this meter is ideal for quickly checking antenna functionality and improving transmission efficiency within a frequency range of 3 to 30MHz. Key Features: · Precise Standing Wave Measurement: Monitors antenna resonance and transmitter power to help maintain proper antenna operation and minimize signal loss. · Battery-Free Operation: Powered by radio frequency energy, this SWR meter requires no batteries, making it convenient and portable for field or home use. · Clear LED Indicators: Equipped with easy-to-read LED lights that promptly display operational status, allowing for quick and accurate adjustments. · Simple Connection Setup: Features clearly labeled IN (RF input) and OUT (RF output) terminals for straightforward connection—connect IN to your radio station antenna terminal and OUT to the antenna itself. · Low Power Consumption: Operates efficiently with input power up to 100W; the smallest green LED indicator illuminates at just 5W, promoting energy-saving use. · Minimal Signal Loss: With an insertion loss of less than 0.3dB, it ensures negligible impact on your signal strength during measurement. · Robust Alloy Steel Construction: Built for long-lasting durability in various environments, suitable for both professional and amateur radio users. Specifications: · Material: Alloy Steel · Usage Frequency: 3 to 30MHz · Power Range: 5-100W · Insertion Loss: <0.3dB · Standing Wave Ratio: <1.2 · Interface: M base Package Includes: · 1 x Shortwave Standing Wave Meter This Shortwave Standing Wave Meter combines precision, durability, and ease of use to support efficient antenna tuning and transmitter monitoring. Its compact design and battery-free operation make it an essential tool for anyone involved in shortwave radio communication.