How many configurations is the APX-100 transponder set available in?

The APX-100 transponder set is a critical component used in military aviation for identification and surveillance purposes. This transponder can be configured in different ways to suit various operational requirements, which is often necessary for adaptation to different aircraft or mission profiles.

The correct answer is that the APX-100 transponder set is available in two configurations. These configurations allow the transponder to operate in different modes, catering to the specific needs of various military applications. The two configurations typically include a basic operational mode and a secondary mode that enhances its performance or capability in specific scenarios.

Understanding the availability of these configurations is essential for technicians working with the APX-100, as it influences how they install, maintain, and troubleshoot the system. Recognizing that the system offers only two configurations can aid in ensuring that the specific operational needs of a mission are met efficiently.