MILSATCOM Terminals Programs, ESC/MCK, 50 Griffiss Street, Hanscom AFB, MA 01731-1620

58 -- TACTICAL UHF SATCOM POWER AMPLIFIER/PREAMPLIFIER; INITIAL QUANTITY OF ONE, MAXIMUM OPTIONAL QUANTITY OF UP TO 385. SOL F19628-00-R-0040 DUE 041200 POC Bill Donaldson, Acquisition Support Manager, 781-271-6091; Joe Zimmerman, Contracting Officer, 781-271-6279. WEB: ESC Business Opportunities Web Page, http://www.herbb.hanscom.af.mil. E-MAIL: Click Here to E-mail the POC, bill.donaldson@hanscom.af.mil. Description: One Power Amplifier/Preamplifier (PA/Preamp) and other accessories (including power cable, operator/maintenance manual, remote control unit), with optional quantities of up to a total of 385. Training (optional). Maintenance (optional). Objective and desired features listed in this synopsis: Commercial off-the-shelf (COTS)/non-developmental item (NDI) UHF SATCOM PA/Preamps for the Air Force ground transportable and fixed-site tactical operations with ultra-high frequency (UHF) satellite communications (SATCOM) terminals. The PA/Preamp, to be located near a tactical ground antenna, shall provide the ability to be remoted through a single type RG-214/U coaxial cable of up to 300 feet in length from the receiver/transmitter (R/T) part of the terminal. Having a separate Remote Control Unit, located near the R/T, offering remote operator control and indications is the required configuration. The government requires that the PA/Preamp be Joint Interoperability Test Command (JITC) certified. If however, the required certifications have not been obtained, responses to this announcement should include a plan and schedule to obtain these certifications prior to delivery of production articles. The PA/Preamp should be JITC certified for UHF SATCOM and Demand Assignment Multiple Access (DAMA) operation in accordance with MIL-STD-188-181B, MIL-STD-188-182A and MIL-STD-188-183, as used in conjunction with the DAMA compatible terminals including the AN/PSC-5A (to MIL-STD-188-181, MIL-STD-188-182, and MIL-STD-183) and the Multi-Band, Multi-Mission Radio (MBMMR) manufactured by Raytheon Systems Corporation-Fort Wayne, IN. The PA/Preamp as described below will provide sufficient radio frequency (RF) gain and power output capability in the transmit mode and a good receive mode noise figure (NF) to support anticipated half duplex SATCOM links, and include diplexer filtering to reject potentially interfering signals. A bypass mode, used for line-of-site communications, should be available when power to the PA/Preamp is disabled. The UHF ranges of operation are: Transmit, 291.0 to 318.3 MHz; Receive, 243.0 to 270.0 MHz; and Bypass, 225 to 400 MHz. Input and output impedances shall be 50 Ohms nominal, with receive/transmit compatibility with up to 1.5:1 VSWR. The medium to high gain performance of ground tactical SATCOM antennas (and associated RF cabling) which could be used with this equipment determine a minimum range of transmit output power between 2 Watts (W) or 3 dBW (decibels relative to 1 Watt) and 20 W (13 dBW). Operator selectable power settings with 2 dB maximum increments are required. Thus, covering the minimum range, six nominal settings would be available at 3 dBW, 5 dBW, 7 dBW, 9 dBW, 11 dBW, and 13 dBW. Finer increments, 1 dB for example, represents an objective capability. As objectives, transmit power flatness shall be +/- 0.5 dB across the band and increment tolerance shall be +/- 0.5 dB. The receive preamplifier shall have a maximum rated noise figure of 3.0 dB (at the SATCOM antenna connector) in the receive frequency range, and have adequate gain such that when terminated into a net 15.3 dB noise figure (R/T NF plus remoting cable loss), the system noise figure (at the SATCOM antenna connector) is degraded minimally, and to not greater than 4.0 dB net. Receive gain downward adjustment capability is required to be able to minimize cosite interference if necessary as a tradeoff for net system noise figure. With the minimum selectable receive gain, and terminated in the 15.3 dB noise figure as above, the system noise figure (at the SATCOM antenna connector) shall not be greater than 17 dB. Preamp receive dynamic range should be optimized consistent with the gain/noise figure requirements above, with an objective 1 dB compression point at the preamp output of +23 dBm. Bypass mode insertion loss shall be 1 dB maximum, between the PA/Preamp R/T interface connector and a dedicated LOS antenna connector. Other characteristics of the PA/Preamp shall include: receive band rejection in transmit mode (243 to 270MHz) of 70 dB minimum, transmit harmonics -60 dBc maximum (with -80dBc beyond second and third harmonics as an objective), and out-of-band rejection in receive mode (DC to 230 MHz and 291 to 1000 MHz) of 50 dB minimum. The PA/Preamp shall be normally in the receive mode until an adequate transmit drive level is detected at the input. Rated operator selected transmit power should be available with a maximum of 1 W (0 dBW) and be off (receive) with less than 0.01 W (10 mW), of input drive at the PA/Preamp unit. The PA/Preamp shall not be damaged with higher than normal transmit drive inputs, as high as 20 W, nor shall transmit output exceed the maximum rated selectable power by more than 2 dB. The PA/Preamp shall be protected from the potential of high VSWR (including open or short circuit), and over-temperature operation. As an objective, visible indications at the remote control unit shall alert the user of the abnormal operating condition. All RF connectors shall be type N female with the exception of the PA/Preamp I/O from/to the R/T, which is required as a male type N. Operator controls and indicators shall be clearly discerned and shall facilitate setup and change of parameters when required. For reference, the R/T located at the operator's site, is normally operated from 90 to 270 VAC, 47 to 63 Hz power, with nearby vehicular provided 22 to 30 VDC power as an optional backup in emergencies. The PA/Preamp power supply is not herein defined, although the same AC source is the normal system mode, and minimum cable deployment (the remoting coaxial cable) is desired. Responses should state if power supply is integrated, supplied as an operator/control located configuration, or not supplied. If an operator/control location AC/DC supply is used or to be user supplied, and coupled onto the RF coaxial cabling to achieve only one deployed cable, the stated power requirements (DC voltage range and current) supplied to the remoting cable and hence the PA/Preamp shall be consistent with the DC resistance (center conductor plus current return path in the shield braid) of up to 300 feet of RG-214/U coaxial cable. A power cable from an AC/DC power supply to the operator/control unit shall be supplied, ten feet nominal in length, terminated in insulated terminal lugs for 1/4-inch hardware, with polarity marking. Operation over the vehicular DC power range (emergency backup mode at the operator's site) is desired, but performance may be degraded. The offeror should address performance in the proposal as appropriate under this backup power mode. Transmit duty cycle, while typically intermittent, will at times be continuous (over an hour), and should be so rated at maximum power and operating temperature. Physical design and manufacture of the PA/Preamp unit shall be weather-tight for exterior mounting in an unprotected environment. Coaxial connectors shall include captive weather tight covers. PA/Preamp overall system physical volume and weight respectively, including controls, should be 320 cu. in. and 12 lb. maximum (without power supply) or 550 cu. in. and 20 lb. maximum (including power supply) as objectives. Minimum operating temperature range of -20 degrees C to +60 degrees C is required, with cooling by natural convection only. (No conduction-based cooling through mounting provisions should be assumed.) The PA/Preamp must have an operation and maintenance manual provided with it. Built-In-Test, diagnostic feedback to the operator, features promoting ease of setup and operator and organizational level maintenance, and available technical support for the PA/Preamp are desired features. Optional contractor training may also be desired. The contractor should identify all warranties associated with deliverables. The SIC Code for this acquisition category is 3669 and the size standard is 750 employees. Respondents to this synopsis should identify whether they are a large or small business and provide their company's name, address, telephone number, and a Point of Contact (POC). Any proprietary information submitted should be identified as such. The Government will not reimburse respondents for any cost associated with submission of the information being requested or reimburse expenses incurred to interested parties for responses to this synopsis. This CBD does not constitute a commitment to order on the part of the Government. Responses are to be mailed to: ESC/MCK, 50 Griffiss St., Hanscom AFB MA 01731-1620, ATTN: Bill Donaldson, or Faxed to (781) 271-7956, ATTN: Bill Donaldson. Responses may be hand carried to the following address: The MITRE Corporation, Lobby Bldg. M, 202 Burlington Road, Bedford MA 01731-1420, ATTN: Bill Donaldson, (ESC/MCK). E-mail responses will also be accepted (bill. donaldson@hanscom.af.mil). No telephone responses will be accepted. An Acquisition Ombudsman, Colonel Steven H. Sheldon, Director, Commander's Staff, has been appointed to hear concerns from offerors or potential offerors during proposal development. You should only contact the Ombudsman with issues or problems you cannot satisfactorily resolve with the program manager and/or contracting officer. The Ombudsman role is to hear concerns, issues, and recommendations and communicate these to the appropriate government personnel. The Ombudsman will maintain strict confidentiality if desired. The Ombudsman does not evaluate proposals or participate in source selection. You can contact the Ombudsman at (781) 377-5106. Posted 04/10/00 (D-SN443292). (0101)

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