Commander, Naval Air Warfare Center Weapons Division, Code 220000D, 1 Administration Circle, China Lake, CA 93555-6100

58 -- VIDEO CODER/DECODER SOL N68936-96-R-0334 POC Marge Schafer, Contract Specialist, (619) 939-4292. This is amendment 0002 to solicitation N68936-96-R-0334. The purpose of this synopsis is to respond to technical questions. Question: The revised specification specifies that ''Full duplex is only in reference to DS-1, RS 232, or RS 422 data transmissions in each coder/decoder combination and not to the video signal transmission.'' Does this mean that the two DS-1 data streams which must be carried in the multiplexed overhead from the remote radar sites to the hub are to be FULL-DUPLEX? If the two DS-1 data streams are full duplex are they to be encrypted in the direction from the hub to each of the remote radar sites and will the reverse direction (non-video) be interfaced to higher order multiplex such as a DS-3? Answer: The requirement for two DS-1 links multiplexed in the overhead of the CODEC System multiplexer is for full duplex circuits. These DS-1 channels will require a higher level multiplexer with a framed DS-3 output and that is fully compatible with KG-95-2s (government furnished). Encryption will be used to protect the links and the KG-95-2s are capable of full duplex DS-3 (video and DS-1 data channels). The initial video requirement is for simplex video channels from the remote sites to the central video center. However, the system proposed by the suppliers must be capable of simple expansion, by adding coders and decoders to the multiplexing equipment acquired through this procurement, providing full duplex video transmission. The period for submitting proposals is extended to 4 November 1996. Proposals should be submitted to 515 Blandy, Room 101, China Lake, CA 93555-6100 by 2:30 p.m. PST. (0285)

Loren Data Corp. http://www.ld.com (SYN# 0168 19961015\58-0002.SOL)