Which of the following is NOT a method of transferring radar contact?

The method that is NOT typically used for transferring radar contact is the utilization of emergency signals from the aircraft. Emergency signals, such as squawking 7700, indicate that an aircraft is in distress rather than conveying information about radar contact transfer. Such signals alert air traffic control (ATC) to a significant issue requiring immediate attention but do not serve as a formal method for passing radar contact between controllers.

On the other hand, the other methods listed are common techniques used to transfer radar contact effectively. Pointing to a target on the receiving controller's display allows for a visual indication of the aircraft being discussed. Landline voice communications provide a direct and clear way for controllers to convey necessary information about aircraft, including their radar contact status. Additionally, using automation capabilities involves technologically advanced methods, like radar data sharing systems, which facilitate seamless radar contact transfer.