The US Geological Survey is seeking qualified businesses for radio communications site infrastructure construction and modernization to support its Earthquake and Volcano Science Centers. The work includes maintenance, repair, and upgrades of environmental control systems, power systems, backup batteries, grounding, shelter and tower infrastructure, antenna installation, and cable routing. Responses must be submitted electronically by 05/07/2026 at 1500 PST, with documentation of technical expertise limited to 50 pages. No budget amount is specified, and the location for performance of services is not detailed. This is a sources sought notice for market research, not a solicitation for proposals.