The U.S. Geological Survey (USGS) is seeking qualified businesses to provide acoustic receivers, transmitters, and activation probes as part of a market research initiative. The procurement includes 205 lightweight transmitters utilizing binary phase shift keyed (BPSK) technology, designed for various fish sizes, and capable of operating in specific temperature ranges while emitting signals at a frequency of 69 kHz. This equipment is crucial for underwater research initiatives targeting marine life and ecosystems, emphasizing the need for technical precision and durability in environmental monitoring. Interested vendors must submit their technical specifications and brochures via email to Yangzhi Deng at yangzhideng@usgs.gov by January 2, 2025, at 3:00 PM PST, as hardcopy submissions will not be accepted.