US POSTAL SERVICE 475 L'Enfant Plaza, SW Room 4541 Washington DC 20260-6238

58 -- DIGITAL TRANSMISSION EQUIPMENT DUE 071296 POC Booker Weaver, 202/268-5669. The Postal Satellite Training Network (PSTN) is used to deliver training courses and maintenance information live to various Postal Service sites. Established in 1990, the PSTN now includes four uplink locations and approximately 320 downlink sites located at postal field offices distributed throughout the United States, including Alaska, Hawaii and Puerto Rico. Due to increasing broadcast requirements the USPS is considering acquisition of a digital transmission network that would coexist with the current analog network and be cabled to the existing radio frequency (RF) distribution. The digital system shall permit multiple channel broadcasts simultaneously from any and/or all existing uplinks, up to a maximum of six signals, on a 43 MHZ transponder. The system must operate on selectable bandwidths from approximately 3 to 8 MHZ, with receivers following the broadcast signal bandwidth and transmission rate. Approximately 320 sites shall receive digital downlink antenna systems. These antenna shall be offset, fixed, receive-only antennas no smaller than 1.8 meters in diameter and able to withstand winds up 110 mph and 59 degrees Fahrenheit. All receive sites will be installed as turn key systems with the digital headends cabled into the existing distribution system at each site. One of the four uplinks shall be installed at the beginning of the deployment to provide tests programs for the newly installed downlinks. Two of the remaining three transmission sites shall be modified after all the digital downlinks are in place. The digital encoder channels shall be installed to provide redundant chassis power supplies. The broadcast channels shall be installed to provide broadcast redundancy. If your company is interested in being considered for participation, should a solicitation be issued, you must participate in a qualification process. You should submit a letter on your firms letterhead stating that your company is interested in participating and is qualified to do so. A prequalification package will then be provided. Your response must include the company name, address, telephone number, federal ID number, the name of a contact person, must be signed by an officer of the company, and must include sufficient information to determine that your company is qualified to perform the work. Send responses to Booker Weaver, Room 4541, 475 L'Enfant Plaza, West, SW, Washington, DC 20206-6238. Written responses to the qualification package shall be received by July 12, 1996 and oral presentations will be scheduled for July 15-19, 1996 in Norman, Oklahoma. There will be no other announcements for this requirement. This is not a solicitation. See Numbered Note(s): 1, 19. (0152)

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