Presolicitation notice from the Department of Defense, Department of the Navy, for the procurement of a Combiner, Aircraft, M. This item is typically used in aircraft systems to combine multiple signals into a single output. The notice specifies that the item is a commercial/nondevelopmental/off-the-shelf item and requires Government source approval prior to contract award. Interested parties must submit the necessary information for source approval. The notice also provides links to additional resources for spares and repair. The proposed contract action is for supplies or services for which the Government intends to solicit and negotiate with only one source. All responsible sources may identify their interest and capability to respond to the requirement or submit proposals, quotations, or capability statements.