A mobile ultrasound system will pair with a wireless ultrasound probe for exclusive communication between the two for an ultrasound exam when the wireless probe is brought to within a predetermined distance of the mobile ultrasound system. The ultrasound system determines that the wireless probe is within the predetermined distance from the strength of the signal received by the system from the wireless probe. Pairing can proceed automatically when a wireless probe is within the predetermined distance, or after a user actuates a control to initiate the pairing. The ultrasound system may display the identity of a probe within range on the display of the system for selection by the user so that the user will be confident that pairing will be done with the desired wireless probe.