1、AMSC N/A FSC 5985MIL-DTL-25707/1C 15 September 2011 SUPERSEDING MIL-DTL-25707/1B (USAF) 25 July 1999 DETAIL SPECIFICATION SHEET ANTENNA, FLUSH MOUNT, TYPE AT-740/A This specification is approved for use by the Department of the Air Force and is available for use by all Departments and Agencies of th
2、e Department of Defense. The requirements for acquiring the antenna described herein shall consist of this document and MIL-DTL-25707. FIGURE 1. Outline drawing antenna AT-740/A. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-2570
3、7/1C 2 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general information only. 3. Unless otherwise specified, tolerances are .015 inch ( 0.38 mm) for three place decimals and .03 inch ( 0.76 mm) for two place decimals. 4. Finish: Anodize ring in accordance with MIL-A-8625.
4、Chemical conversion coating pan flange; paint pan body with flat white polyurethane enamel or equivalent; radome is to be flat black. 5. Fill antenna cavity with polyurethane foam, or equivalent, with density as necessary to maintain structural rigidity, radiation pattern as specified, and complianc
5、e to environmental requirements. REQUIREMENTS: Dimensions and construction: See figure 1. Temperature operating range: -49C to +96C. Frequency: 960 MHz to 1,220 MHz. Impedance: 50 ohms, nominal. VSWR of antenna: 960 MHz to 1,220 MHz, 1.8:1, maximum. 1,000 MHz to 1,100 MHz, 1.6:1, maximum. VSWR of sa
6、mpling probe: 960 MHz to 1,220 MHz, 1.5:1, maximum. Probe attenuation: 17.5 dB 1.5 dB over frequency band 960 MHz to 1,220 MHz. Power: 4 kW, peak; 100 watts, average. Weight: Less than or equal to 16 ounces. Part or Identifying Number (PIN): M25707/1-01. Data list: The measured VSWR and attenuation
7、data shall accompany each antenna when required by contract. Dimensions Letter Inches Millimeters Min Max Min Max B 8.391 8.421 213.13 213.89 C 7.709 7.729 195.81 196.32 D - 7.109 - 180.57 E .750 - 19.05 - F - 1.520 - 38.61 G .141 .156 3.58 3.96 H .60 .72 15.24 18.29 J .00 .12 0.00 3.05 K .06 .13 1.
8、52 3.30 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-25707/1C 3 Referenced documents. In addition to MIL-DTL-25707, this specification sheet references the following documents: MIL-A-8625 MIL-STD-1285 The margins of this specification shee
9、t are marked with vertical lines to indicate where changes from the previous revision were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this
10、document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian: Preparing activity: Air Force - 85 DLA - CC DLA - CC (Project 5985-2011-025) NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
