The Department of Defense (DOD) is seeking proposals for the Non-RF Transceiver Alternative Communicator (NRF-TAC) through its SBIR program. The U.S. Army is interested in developing a small, energy-efficient, self-contained transceiver that can wirelessly communicate between two points without using traditional radio frequency (RF) transport. The NRF-TAC device should be capable of transmitting and receiving signaling up to 300 meters using non-standard means such as magnetic, acoustic, or infrared, which are difficult to detect and report in covert activities. The device should be easily concealable, field programmable, and able to operate for at least 800 hours without intervention. The Phase I of the project will involve the creation and delivery of a plausible design, while Phase II will focus on developing and testing a prototype. The project aligns with the Army's smart sensing initiatives and aims to provide an innovative means of low probability of detection (LPD) and low probability of interception (LPI) communications. The solicitation is open until March 31, 2025. For more information, visit the SBIR topic link or the solicitation agency website.