GOOZEEZOO K-180WLA Active Loop Antenna 0.1-180MHz Shortwave Radio Antenna

Wideband Reception: Operates across an active working frequency range of 0.1 -180MHz, smoothly covering long wave, medium wave, short wave, FM broadcasting, and VHF aviation bands, while delivering a stable gain of approximately 20DB and maintaining roughly 8.9DB gain even when operating up to 450MHz ^^
Advanced Preamplifier: Utilizes ultra-high frequency, low-noise preamplifier devices with a shortwave antenna tolerance of up to -10DBM without signal saturation, featuring a newly added FMDX/HF switch to adjust FM band gain, three-stage adjustable gain, and a modern touch-activated power switch with low-battery indication ^^
Extended Battery: Powered by a built-in 3.7V 2750mAh lithium battery providing up to 150 hours of continuous full-power operation, equipped with comprehensive protection against anti-reverse battery connection, over-discharge, over-charge, over-current, and antenna terminal short-circuits, alongside a convenient Micro-USB port compatible with standard 5V mobile chargers ^^
Weatherproof Construction: Designed with a compact 55 cm loop diameter and 304 stainless screws to prevent corrosion, featuring a fully waterproof front-end amplification box engineered for reliable, long-term outdoor deployment in harsh weather environments ^^
Broad Compatibility: Fully compatible with mainstream shortwave receivers including Tecsun, ICOM, and YAESU models while optimized specifically for SDR receiver setups, featuring a compact and lightweight structure that allows quick, hassle-free mounting on windows, balconies, terraces, or rooftops for space-constrained broadcasting enthusiasts