In my StreetPilot c320, a small coaxial connector on the back of the unit. What is that?

This is for an external antenna, some wind screens are protected and will not allow a good signal through the unit that allows you to have an antenna that can be placed anywhere you can pick up a clear signal.

F connector Platinum on Triset 113 coaxial cable – Crimping

200084 RG59 BNC Compression Connector RG59, BNC $1.79 Includes 6 color-coded bands for cable ID Requires 204-205 coax stripper and 204-036 compression tool...

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