How many types of antennas are used with the AN/URN-25?

The AN/URN-25 is a tactical navigation aid that typically utilizes two types of antennas to effectively perform its functions. These antennas are specifically designed to enhance its operational capabilities, such as providing accurate position fixing and bearing information.

The first type of antenna is generally responsible for receiving signals, while the second antenna may be tasked with transmitting or receiving alternative signal formats, enabling robust communication and navigation capabilities. The combination of these two antennas ensures that the AN/URN-25 can maintain effective operation in various environments, supporting both navigation and communication requirements.

In this context, having two antennas allows the system to utilize diverse signal processing techniques and provides redundancy, which is critical for reliable operation in demanding conditions.