This is a great long-range antenna for Garmin Astro 320, 430, and Garmin Alpha 100 that really reaches out. It is 18″ tall and has a 4.7″ base. This antenna comes in standard connection and Quick Connection. Outdoor Dog Supply also provides a 14″ Garmin Long-Range Antenna.
Quick Connection SKU: OS-18-4.7-BNC
Standard Connection SKU: OS-18-4.7-SMA
Quick Connect SKU: OS-QCK