What frequency is typically used in uncontrolled airspace?

In uncontrolled airspace, the common frequency used is 126.7 MHz. This frequency serves as an Unicom frequency for pilots to communicate on when they are operating in areas without air traffic control. It facilitates self-announcement and situational awareness among pilots, making it easier for them to coordinate their activities, especially during takeoff, landing, and operations in the vicinity of airports.

The selection of this frequency is specifically designed to promote safety and efficient use of the airspace, allowing pilots to announce their positions and intentions so that others in the area can hear and respond accordingly. This is crucial for maintaining safety in uncontrolled environments where multiple aircraft might be operating simultaneously without ATC oversight.