Garmin Alpha 200i Handheld tracking and training system lets you monitor up to 20 dogs from up to 9 miles (depending on the dog device) on a 3.5” touchscreen display with a 2.5-second update rate. best long-range antenna for Garmin alpha Easily control training functions by using the button-operated, dog-focused design. Plus, you’ll have access to premium Garmin navigation and mapping. https://expressoutdoorhuntingstore.com/product/garmin-alpha-200i/