SPAWARSYSCEN Charleston, PO Box 190022, North Charleston, SC 29419-9022

17 -- AIRCRAFT LAUNCHING, LANDING, AND GROUND HANDLING EQUIPMENT DUE 042799 POC Addie McLaurin, Code 1113AM, (843) 974-5978, Contracting Officer, Paulette Dillard E-MAIL: SPAWARSYSCEN Charleston, mclauria@spawar.navy.mil. This sources sought announcement is issued for the purpose of identifying sources providing fixed- frequency transmitter and receiver radios, variable frequency transceivers and linear power amplifiers (LPA) for use in air traffic control operations at US Naval and Marine Corps Air Stations. Frequencies to be considered are in the Ultra High Frequency (UHF) Spectrum of 225 to 399.975 MHz and the Very High Frequency (VHF) Spectrum of 117.975 to 173.9875 MHz. The majority of radios desired will be fixed frequency UHF types with a smaller percentage of VHF and transceiver units. The fixed-frequency transmitters shall provide line-of-sight transmissions of voice in their respective frequencies. The transmitters shall be tunable in twenty-five (25) kHz increments. They shall operate at a one hundred (100) percent duty cycle with a power output of 10 watts at ninety (90) percent amplitude modulated (AM) signal without distortion or deterioration of the transmitted signal. The transmitters shall incorporate aRemote Maintenance Monitoring output, providing a means for monitoring power supply voltages, forward and reverse RF power, transmitter frequency and percent of modulation. Mounting slides shall be provided to install the transmitter into a standard 19-inch rack. All necessary cables, connectors and hardware necessary to install and operate the transmitter shall be provided. . The receivers shall provide line-of-sight AM reception of voice in their respective frequencies. The receivers shall be tunable in twenty-five (25) kHz tuning increments. The receiver shall, when injected with a -97.5 DBMS, 1 kHz, 30 percent-modulated signal, provide a 10 dB Signal plus noise to noise (SINAD) measurement. The receiver shall incorporate a Remote Maintenance Monitoring output, providing a means for monitoring power supply voltages, Automatic Gain Control (AGC) level in DBM, squelch level and status, and receiver frequency. Mounting slides shall be provided to install the receiver into a standard 19-inch rack. All necessary cables, connectors and hardware to install and operate the receiver shall be provided The LPAs shall provide enhanced and extended range capability to the fixed frequency transmitters. They shall directly interface with the transmitters and provide an adjustable 50 watts power output. In the event of a malfunction, the LPA will automatically bypass its internal amplifier circuitry and connect the RF output of the transmitter directly to the antenna. All necessary cables, equipment slides, connectors and hardware required for installation and operation of the LPA shall be provided Two types of transceiver are desired, hereby designated as Type A and Type B. Type A shall provide line-of-sight AM/FM transmission and reception within the 115.000 to 173.9875 MHz VHF and 225.000 to 399.9875 MHz UHF frequency bands using 25 and 12.5 kHz tuning increments. It shall transmit and receive analog plain text voice and digital encrypted voice or data. The transceiver shall provide a maximum of ten (10) watts RF output modulated by an AM or FM signal. The transceiver shall, when injected with a -103.5 dBm, 1 kHz, 30 percent modulated signal, provide a 10 dB SINAD measurement in the AM plain text mode of operation. The AM cipher text, FM plain text and FM cipher text mode of operations shall have the same 10 dB SINAD measurement with equivalent inputs. The transceiver shall operate in all weather conditions and provide a means for remote controlled operations. The Type B Transceiver shall provide line-of-sight AM transmission and reception in the UHF/VHF bands used in air traffic control operations. The transceiver shall operate in the 118.000 to 136.975 MHz VHF and 225.000 to 399.975 MHz UHF frequency bands with 25 kHz tuning increments. The transceiver shall provide a maximum of five (5) watts RF output modulated by an AM signal. The transceiver shall, when injected with a -97.5 dBm, 1 kHz, 30 percent modulated signal, provide a 10 dB SINAD measurement. The transceiver shall operate in all weather conditions and provide a means for remote transmission and reception. Both Type A and Type B Transceivers shall be configured for "man-pack operation" and be complete with transceiver, battery case, Ni-Cad or Gel Cell batteries, battery charger, antennas, interconnection and power cables, carrying bag, operator manual and microphone. This announcement is only an expression of interest. Future requirements and procurements are uncertain. The Government does not presently have a requirement and does not intend to award a contract on the basis of this announcement. For further information contact Cliff Bath, Code 314CB, at (843) 974-4334. All information supplied should be mailed to bathc@spawar.navy.mil or SPAWAR Systems Center Charleston P.O. Box 190022 North Charleston, S.C. 29419-9022., Attn: Code 314CB to arrive no later than April 27, 1999. Responses must include the following: (1) name and address of firm, (2) ownership: Large, Small, Small Disadvantaged, 8(a), and/or Woman-Owned; (4) number of years in business; (5) two points of contact: name, title, phone, fax and e-mail. Posted 04/16/99 (D-SN321272). (0106)

Loren Data Corp. http://www.ld.com (SYN# 0182 19990420\17-0004.SOL)