Naval Surface Warfare Center, Dahlgren Division, 17320 Dahlgren Road, Dahlgren, VA 22448-5100

66 -- FIELD INTENSITY ANALYZER SOL N00178-96-R-3011 DUE 040596 POC Katie Samulevich, (540) 653-7765; Connie Gayle, (540) 653-7765 FAX Number: (540) 653-6810. The Dahlgren Division, Naval Surface Warfare Center has a requirement for Field Intensity Meters, that are either a commercial-off-the shelf field intensity analyzer or an already developed field intensity analyzer with the following specifications: SPECIFICATION FOR FIELD INTENSITY ANALYZERS: Meter, fully automatic (battery operated); Frequency Range, 2-30 MHZ; Frequency Tuning, 10 khz steps; Frequency Tuning Accuracy, 5 kHz; Preset Frequency Channels, 9 (nonvolatile memory); Antenna Probe, 40.5'' vertical whip, Dynamic Range, 0.001 V/m to 400 V/m; Front Panel, Digital Display, Frequency (MHZ); Preset Channel Number; Field Intensity (V/m) with Peak Hold Option; Backlighting (User-selectable); Total of 16 Characters; Battery Voltage Meter; Analog Display; Field Intensity (V/m) Meter; Key Pad, All Function Keys; Accuracy, Bench: +/- 0.5 dB; In field: +/- 2 db; Internal Calibration, 5 MHZ, 15 MHZ, and 25 MHZ @ 2 V/m; Bench Calibration, Duplicate field data on the bench from 2 V/m through 50 V/m; External calibration ports with separate calibration adjustments for low, middle, and high frequencies; RFI Immunity, 200 MHZ - 10,000 MHZ at 10 mW/cm2; Circuitry Protection, Conformally coated; Maximum Meter Size, 500 cubic inches (without handles); Maximum Meter Weight, 8 lbs (including battery); Battery, Off-the-shelf battery; Battery Life, 10 hours with backlighting on; Battery Chargers; Battery installed in meter; Charging unit, which operates from any 110 volt/60 Hz source, that will plug into the meter to charge the installed battery; Charger circuit will provide a maximum charging current of 100 mA when battery is fully discharged and a trickle charge current when battery is fully charged; External Battery Charger; Operate from any 110 volt/60 Hz source. Charger circuit will provide a maximum charging current of 100 mA when battery is fully discharged and a trickle charge current when battery is fully charged; Off-the-shelf battery charger; Reusable shipping container; Foam cut-outs to house meter, spare battery, antenna, antenna simulator, battery charger, assorted cables, and operation manual; Rugged (polyethylene) construction; Recessed wing-turn latches; Recessed hinges; Recessed, spring loaded handles, may be used as a carrying case. This meter will be used to take field strength measurements on board Navy ships and at shore facilities. The meter shall be fully automatic, self-contained, rugged and capable of withstanding shock. Operator adjustments will be limited to entering the frequencies being measured and reading field strengths. Field operations require the operator to take measurements in areas difficult to access. In some cases, the operator must transport the meter up and down vertical/inclined ladders, on catwalks, and in the vicinity of weapon systems, aircraft, and other test platforms. Occasionally, survey personnel are required to make measurements on the mast area which requires the existing instrumentation (due to size and weight) to be hoisted via rope. Based on this requirement there are obvious safety concerns which dictate an urgent need for instrumentation that meets the size and weight specifications listed herein. The meter shall have an internal signal source that will output a known voltage at frequencies of 5 MHZ, 15 MHZ, and 25 MHZ. This source shall be capable of being switched internally to the antenna port to enable the meter to be checked by the operator in the field prior to use. The meter shall be furnished with a fixture that can be used on the bench to simulate an antenna. The fixture, when connected to the meter, will enable the meter to duplicate voltage measurements taken with a calibrated radio interference-field intensity meter NM-25T and coupler, when injecting a known signal source into the meter, in parallel with a 50-ohm load. The anticipated delivery is as follows: First production prototype five (5) months after award of contract. Production units shall be delivered at a rate of four (4) per month thereafter for the next two months with the 10th unit being delivered in the 8th month. A total quantity of 10 units are anticipated. Note 1. Contact Barbara Getty, S13-21 in writing for a copy of the solicitation. (0045)

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