Space and Naval Warfare Systems Command, 2451 Crystal Drive, Arlington, VA 22245-5200

58 -- OE-82( )/WSC ANTENNA FOLLOW-ON DUE 082997 POC David Bodner, PCO, (703)602-0694 E-MAIL: click here to contact the contracting officer via e-mail, bodnerd@nosc.mil. The Space and Naval Warfare Systems Command, Joint Maritime Communications System (JMCOMS) Program Office, is seeking potential sources to supply the Navy and joint forces with a commercial off-the shelf, non-developmental UHF SATCOM antenna system. The antenna system shall be capable of maintaining upper hemispherical coverage independent of motion and maneuver of the ship. The antennas shall have hemispheric coverage from two degrees above horizon to zenith. The antenna system shall require no manual inputs or operator attendance to maintain the antennas pointing to true satellite azimuth The antenna system shall meet the following performance requirements: RF Power Rating of 800 watts peak envelope power (PEP) and 400 watts average power. Frequency range of 240 to 318 MHz. Polarization shall be right-hand circular. Gain shall be between 12-16 dBi, but not less than 12 dBi. The 3 dB beamwidth shall be no less than 33 degrees from 240 to 318 MHz. VSWR of the radiating assembly shall not be greater than 1.5:1 across 240 to 292.2 MHz and 1.2:1 across 292.2 to 318 MHz. Total antenna weight shall not exceed 280 lbs. The antenna physical dimensions shall not exceed 4.5 ft high by 4.5 ft deep by 4.5 ft wide. The Receive frequency range shall be 243.0 to 270.5 MHz. The receive signal shall require amplification or a preamp, the preamplifier gain shall be 32 + 2.0 dB at the center frequency. The preamplifier noise shall not exceed 2.0 dB. The antenna system will also require a diplexer for bandpass filtering on the transmit and receive bands. The transmit frequency range shall be 292.2 to 318 Mhz. A transmit-transfer and receiver-transfer switching unit shall be required for automatically switching from one antenna to the other. The switching unit shall have a switch for single satellite coverage and dual coverage, allowing independent antenna tracking and dual satellite access options. An antenna control unit, configured for a 19 inch cabinet shall be provided for control of the antennasystem. The antenna control unit shall process operator input commands of true elevation, azimuth, and own ship heading inputs from the own ship data set and convert them to commands for antenna pointing. Any offeror who can provide an item which meets the above characteristics should, at a minimum, submit the following information: System description and performance which addresses the desired capabilities, the unit cost for quantities of 50 and 100 systems, the included capabilities at the submitted cost, upgrade path, production rates, length of time product has been on the market, quantities produced to date, supporting technical documentation, warranty information, test reports/supporting data, logistics infrastucture, performance/reliability data, and the appropriate company points of contact. Interested parties must indicate whether they are small business, small disadvantaged, or 8(a). This is not an RFP, a promise to issue an RFP, nor will the government pay for information received in response to this synopsis. Acknowledgment or receipt will not be made nor will telephone inquires be honored. Responses to this synopsis must be received by 1600 EDT on 08/29/97 in writing and delivered via mail to the following address: Commander, Space and Naval Warfare Systems Command, Attn: SPAWAR 02-32C, Room 201, 2451 Crystal Drive, Arlington, VA 22245 and should reference the synopsis title on the enclosure(s) and mailing envelope. (0212)

Loren Data Corp. http://www.ld.com (SYN# 0332 19970804\58-0007.SOL)