The Heathkit HD-1424 Active SWL Antenna is a high-quality antenna designed for radio communication enthusiasts. With a focus on improving signal strength and clarity, this antenna is specifically tested and confirmed to be in working order. The Heathkit brand is known for producing reliable and effective radio communication accessories, making this active antenna a valuable addition to any radio setup. Ideal for SWL (Shortwave Listener) enthusiasts looking to enhance their listening experience.