NAVSUP Weapon Systems Support Philadelphia intends to make a sole-source award to Lockheed Martin Corp for four radar receiver-transmitters. The justification is that Lockheed Martin is the Original Equipment Manufacturer and the only known source, as the government lacks the data rights to purchase the part elsewhere. While this is a notice of intent and not a formal competitive request, proposals received within 45 days of the synopsis will be considered. The procurement will use FAR Part 15 procedures, and electronic solicitation will be posted to NECO.