Garmin Astro Long Range Antenna

"Increase your tracking range by up to 3 miles! This new Astro Portable Long Range Antenna is designed to increase the range of the hunterâ?TMs handheld receiver, by up to three miles. When a dog travels outside the Astroâ?TMs range, the antenna can be lengthened to over a meter and attached directly to the Astro 220 via a one-meter coaxial cable (included). The antenna features a molded handle and lanyard, and measures just a quarter meter long when stored â?" small enough to be carried in a hunting vest when not in use."