Commander, Naval Sea Systems Command, SEA 0251U, 2531 Jefferson Davis Hwy, Arlington, VA 22242-5160

59 -- LINK-4A (TADIL-C) DIGITAL DATA COMMUNICATIONS SET (DDCS) SOL N00024-97-R-5183 POC Kristin Henry, SEA 0251U, (703)602-8105 ext. 516 The Naval Sea Systems Command seeks information on existing or proposed products which will provide a low cost Link-4A (TADIL-C) Digital Data Communications Set (DDCS) alternative. An overall objective in the design development is to provide the Navy with the most cost effective system which makes maximum use of the Non-Developmental Items (NDI) and Commercial Off-The-Shelf (COTS) products. This is a request for information (RFI) only. The following is a general outline of the required features in a Link-4A DDCS. All comments on this RFI are welcome, particularly the comments pertaining to the requirements following. The DDCS must be a functional replacement for current terminals. Operationally it must comply with Operational Specification (OS)-404.1. The terminal must support full two-way communication, including all test messages, control messages and reply messages. It must support the Begin Two Way Communication (BTWC) and Standby (STBY) interrupts. It is also expected that the terminal will provide a communication monitoring capability, such as (i) number of control and reply messages transferred per unit time per controlled aircraft address, and (ii) count of messages with errors. The DDCS must include two mutually exclusive types of NTDS interfaces for communication with the Tactical Data System (TDS), which for AEGIS may be either WCS or C2P. These are NTDS Type B(fast) and NTDS Type E (low level serial). It must also include an interface with the Link-4A radio. Primary and alternate channels must be accommodated, both with the TDS interface and with the radio interface. Consideration should be given to a configuration which functions as a standalone DDCS, i.e., a direct replacement for existing shipboard terminals. However the possibility should also be considered that, for new ship construction and some backfits, the DDCS could be incorporated into the AN/UYQ-70, a cabinet with a VME bus backplane which will house, among other items, the Common Data Link Management System (CDLMS). The terminal must be designed with Built in Tests (BITs). These tests must be operable from the terminal itself and must isolate failures to at least the level of Line Replaceable Units (LRUs). In addition, the terminal must support off-line testing of the interfaces to the Tactical Data System (TDS) and radio. The government is considering its long term needs for DDCS, and is attempting to survey the market to see what is available at significantly lower costs than the current DDCS. This is NOT a Request for Proposal (RFP) or an indication that the U.S. government intends to contract for supplies or services described in this notice. The U.S. government will not pay for information received in response to this RFI. The technical point of contact for this notice is Jerry Vaughn, PEO(SC/AP) G76, telephone (703) 602-1193 ext. 576. Responses should be sent within thirty (30) days of the date of this announcement to his attention Program Executive Office for Surface Combatants/AEGIS Program (PEO SC/AP), PMS400G76, 2531 Jefferson Davis Highway, Arlington, VA 22242-5165. (0087)

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