How many two-way channels does TACAN use within its operating frequency range?

TACAN, or Tactical Air Navigation, employs a system that provides accurate distance and bearing information to aircraft. It operates within the UHF frequency range, specifically from 960 to 1215 MHz. Within this operational scope, TACAN utilizes 126 channels for two-way communication. Each channel allows for effective communication and navigation, providing pilots with the necessary data for situational awareness and guidance.

The selection of 126 channels is significant because it allows for ample frequency diversity, helping to mitigate interference and ensure that multiple aircraft can operate effectively in proximity to one another without frequency congestion. This design is particularly important in tactical situations, where clear and reliable navigation information is critical.

In summary, 126 channels are crucial for the robust operation of TACAN, supporting its role in military and civilian aviation navigation systems.