If you have a VHF Radio in your truck with an antenna for your radio, you should keep one of these Garmin adapters in your truck.
This is a simple adapter that allows you to connect your Garmin® Astro, or Garmin® Alpha receiver to your radio's antenna. It's very simple to use and we recommend you keep one of these products in your vehicles glove compartment should you run into a situation that you need to increase your range.
Often while out hunting, you may break your Garmin® Long Range Antenna, or your dogs may get out of range. With this little adapter as long as you have a VHF radio you can quickly connect it and double your tracking distance. This adapter allows you to use your VHF, or Marine Radio antenna on your Garmin Astro or Garmin Alpha's SMA connector to increase your tracking range in a pinch. For a more permanent vehicle antenna solutions for your Garmin Alpha, or Garmin Astro we have several Antennas to choose from.
Garmin Astro, and Garmin Alpha antennas for the 220's 320's and Alpha 100 recievers.
Garmin Astro/Alpha Long Range Magnet Mount Antenna Rubber Duck Replacement Antenna For Garmin LR Handle
Garmin Astro, and Garmin Alpha Collar antennas for the DC30's DC40's and TT10 collars