The Defense Logistics Agency-Aberdeen is seeking sources capable of manufacturing parts for the Common AN/APX Transponder, specifically an antenna (NSN 5895-00-935-4975, part number SMD354603). The government does not possess specifications or technical data for this part. Interested companies must submit capability documentation, such as drawings, test results, and prior contract information. This is a sources sought notice for planning and market research only, not a request for proposal. Responses will help determine the acquisition strategy, including potential small business set-asides.