ESC/MCK -- MITRE Bldg "D" 50 Griffiss Street Hanscom AFB, MA 01731-1620

58 -- AMPLIFIER/SPEAKER FOR UHF TACTICAL RADIO SOL F19628-00-R-0061 DUE 080400 POC Bill Donaldson, Contract Specialist (781) 271-6091; Joe Zimmerman, (781) 271-6279, Contracting Officer 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. This is a sources sought synopsis for commercial items prepared in accordance with the format in Federal Acquisition = Regulation Subpart 12.6, as supplemented with additional information included in = this notice. F19628-00-R-0061 is issued as a Sources Sought Synopsis. =20 The MILSATCOM Terminals Program Office is seeking Tactical UHF SATCOM Amplifier/Speakers. Descriptive Data: The amp/speaker shall be electrically compatible with all Receiver/Transmitter (R/T) types of = the AN/PSC-5 family and the Multi-Band, Multi-Mission Radio (MBMMR) as manufactured by Raytheon Systems Corporation, Fort Wayne, IN. The amp/speaker shall include cabling to interface with the R/T handset connector and a user-provided +24 VDC power source. A user-supplied handset or headset, for use in noisy environments, = may be used with the amp/speaker, and should function normally with or = without amp/speaker power applied. The handset will be type H-250( )/U or equivalent. The headset will have compatible (same as H-250) = microphone and PTT interfaces and nominal 150 Ohm or greater earphone impedance. = An amp/speaker local handset volume control shall be provided. The amp/speaker (with connected handset/headset) shall present an impedance equal to at least 90% of the handset/headset impedance, at DC ground potential, to the R/T receive audio circuits, with the local handset volume setting at maximum. In transmit, the handset/headset PTT line closure to ground and handset/headset microphone audio shall be transferred to the R/T directly. In transmit mode, the R/T supplied sidetone shall be provided to the handset/headset earphone, and the amplified speaker output (even when power is applied) shall be muted. In receive mode, the R/T receive audio shall be = provided to the connected handset/headset at the level set on the R/T (nominally = in the 0 to 1.5 Vrms range, depending on R/T volume setting), when the = local handset volume control is at maximum. When powered on, receive audio shall also be amplified (with less than 5% distortion as an objective), = to drive the internal loudspeaker. A separate speaker volume control on = the amp/speaker shall be provided to set speaker loudness level. The amp/speaker shall provide an acoustical output sound pressure level = (SPL) of 90 dBA at a distance of 1 meter, given an R/T receive audio input = level of 0.6 Vrms at 1 kHz, and shall safely handle higher inputs of up to 2 Vrms. The audio response of the amplifier and loudspeaker shall pass = the nominal 300 to 3000 Hz voice bandwidth of the R/T with minimum degradation, and as an objective shall be + 5 dB in acoustic SPL (unweighted) relative to that = at 1 kHz over that frequency range. The minimum speaker volume setting = shall be at least 50 dB less than maximum level and the speaker output shall = be turned off completely with the amplifier power switch. A power ON indicator shall provide indication of operational status. Power from = the user-provided power source shall be 24 +5/-2 VDC, available at peak currents up to 0.75 Ampere maximum. The interface cable(s) shall be = ten feet nominal in length, with mating connectors from the amp/speaker to = the R/T handset connector, and for power from the amp/speaker to the power source. The handset/headset audio interface connector mounted on the amp/speaker shall be the conventional military audio connector common = to H-250( )/U handset interfaces, type MC-283F-1-025-1 or equivalent, for transmit audio (pin D), receive audio (pin B), push-to-talk (pin C), and common return (pin A). The = plug on the interface cable from the amp/speaker to the R/T handset = interface shall be type U-229( )/U or equivalent, with the same pinout. The = power interface cable connector to the power source shall be type MS3116F8-2P = or equivalent, with pin A +24 VDC and pin B ground. Amp/speaker physical dimensions shall be compatible with a maximum volume of 150 cubic = inches as an objective. Weight shall be less than 8 pounds as an objective. Environmental capabilities shall include an operating temperature range of -30=B0 C to +55=B0 C, with -30=B0 C to +70=B0 C as an objective, and = a non-operating range of -40=B0 C to +70=B0 C. Other environmental characteristics shall include operation in up to 95% relative humidity, including condensation, operating altitude of 15,000 feet and non-operating altitude of 40,000 feet, and sand and dust environments. Cooling shall be by free convection only. Items to be supplied with the amplifier/speaker include the audio and power interface cables and an operation and maintenance manual. = Responses shall be mailed to the following address: ESC/MCK, 202 Burlington = Road, Bedford MA, 01739, ATTN: Mr. Joseph Zimmerman/Mr. Bill Donaldson. Responses may also be handcarried to the following address: MITRE Corporation, BLDG M (Main Lobby), 202 Burlington Road, Bedford MA, 01730-1420 ATTN: Mr. Joseph Zimmerman/Mr. Bill Donaldson, ESC/MCK. Respondents to this announcement shall 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 = 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 synopsis does not = constitute a committment to order on the part of the Government. An Acquisition Ombudsman, Colonel Joseph B. Magnone, 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 07/25/00 (D-SN478354). (0207)

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