The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking contractors for the repair and modification of radio modulators. This presolicitation opportunity focuses on electronic countermeasures and related equipment, categorized under the PSC code 5865. The goods and services procured are critical for enhancing communication and operational capabilities within military operations. Interested parties can reach out to Tara B. Kupperstein at (215) 697-3608 or via email at TARA.B.KUPPERSTEIN.CIV@US.NAVY.MIL for further details regarding this opportunity.