Which radio is best known for its use in tactical communications without encryption?

The choice of the AN/PSC-5D as the best radio known for its use in tactical communications without encryption stems from its design and operational capabilities. The AN/PSC-5D is a man-portable, software-defined radio that is particularly effective for sending and receiving clear voice communications and unencrypted data in tactical environments.

This radio is versatile and can operate on multiple frequencies, which makes it useful for communicating in various operational contexts. Its focus on functionality in a tactical setting without reliance on encryption enables straightforward communication, which can be critical in certain situations where rapid information sharing is essential.

While the AN/PRC-150, AN/PRC-117G, and AN/VRC-87 are also tactical radios used in military communication, they often incorporate more advanced features, including encryption capabilities, which can complicate communication processes. The distinguishing feature of the AN/PSC-5D is its primary purpose and effectiveness in scenarios that do not require the complexities of encrypted communications, emphasizing ease of use while maintaining tactical communication integrity.