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Garmin Long-Range VHF Antenna The Garmin Long-Range VHF Antenna increases your range.  This 22 1/2" flexible antenna is compatible with the following Garmin dog devices: Garmin Tri-Tronics TB 10 Pro Trashbreaker Dog Device Garmin Astro DC 50 Dog Tracking Collar Garmin T 5 Tracking Collar Garmin TT 15 Tracking and Training Collar $19.95 Quantity: Add to Favorites