What equipment is employed to orient the antenna during sensor emplacement if the North Finding System (NFS) is inoperable?

The proper equipment to use for orienting the antenna during sensor emplacement, especially when the North Finding System (NFS) is inoperable, is a boresight telescope. The boresight telescope is specifically designed to assist in accurately aligning systems. It allows operators to visually establish a reference point in the desired direction, while ensuring that the antenna is oriented correctly for optimal operational effectiveness.

Additionally, a boresight telescope provides the necessary precision for aligning high-tech systems, where even slight misalignments can result in significant operational inefficiencies. By using this equipment, personnel can make necessary adjustments to the antenna's positioning without relying on the inoperable NFS, thus ensuring that air defense systems maintain accurate situational awareness.

While other tools like a compass module or leveling tool may assist in orientation or measurement tasks, they do not provide the same level of precision and capability for aligning a sensor as the boresight telescope does.