A:
Hey Jimbo.
Sorry, our current model automotive, RV, and trucking devices do not have an external MCX (antenna) jack for connecting an antenna, as it's really no longer necessary. The units have built in high sensitivity receivers that enable them to acquire a satellite signal much faster than previous GPS antennas, and in areas where the satellite signal is degraded.
The RV 760LMT does have an audio out (headphone) jack, and external video input jack for backup cameras. Thanks! *CG