The internal passive antenna of the Galaxy S9 Phone Holder is specifically incorporated to improve your mobile signal once used with a reputable external antenna. The cradle comes with an FME male connector so it can be connected to an external antenna.
In this package is 1 x Strike Alpha Bury S9 Adaptor and 1 x Strike Alpha Samsung Galaxy S9 Car Cradle.   (must be used with a Bury system 9 base unit )

The adaptor allows a user to use a Strike Alpha Cradle with a Bury System 9 base plate. The existing power and antenna connections will be integrated into the cradle. This makes the Strike Alpha Cradles ‘plug and play’ with System 9 base plates.

Using it is easy! Just connect the Strike Alpha Adaptor to the Strike Alpha Cradle for Samsung S9, and click them into the System 9 base plate. No tools required! Truly plug and play.

No need to worry about finding a phone specific cradle that may or may not be available in the market.

Your benefits:

The cradle is designed to be compatible with any Bluetooth hands-free car kits from any manufacturer.

No need for an installer  DIY