This small external antenna is waterproof, and great if you need to
mount your GPS Expander under carbon fiber, or in other "RF
challenging" locations. The Expander will pick between the
strongest of the two signals (from the built-in antenna or this
External Antenna) which can improve reception if your model is
upside down, etc. Includes cable with MMCX jack. NOTE: if you
purchased your GPS Expander previously, make sure it has a
small "gold" MMCX jack protruding from the shrinkwrap!