1、AMSC N/A FSC 5985 MIL-DTL-28839/1A 20 May 2013 SUPERSEDING MIL-W-28839/1 13 March 1978 DETAIL SPECIFICATION SHEET WAVEGUIDES, ELLIPTICAL, SEMIRIGID This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the antenna describe
2、d herein shall consist of this specification sheet and MIL-DTL-28839. Letter dimensions A B C D E F Min Max Min Max Min Max Min Max Min Max Min Max 4.05 (102.87) 4.09 (103.89) 2.487 (63.17) 2.521 (64.03) 3.453 (87.71) 3.487 (88.57) 2.047 (52) 2.081 (52.86) .233 (5.92) .267 (6.78) 2.143 (54.43) 2.177
3、 (55.29) NOTES: 1. Dimensions are in inches. 2. Metric equivalents are in parentheses. 3. Metric equivalents are given for general information only and are based upon 1.00 inch = 25.4 mm. 4. Unless otherwise specified, tolerances is .017 (.43 mm) FIGURE 1. Waveguide. INCH-POUND INACTIVE FOR NEW DESI
4、GN AFTER 8 MAY 1998 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28839/1A 2 REQUIREMENTS: Dimensions and configuration: See figure 1. Material: Accordance with ASTM-B241/B241M Aluminum alloy 1060, 1100, 6061, or 6063. Frequency range: 2.65
5、 3.20 GHz. VSWR: 1.07, maximum. Attenuation: .011 dB per foot. Axial twist: 6.0 degree per foot. Bending radii (minimum): E plane: 20 inches (51 cm). H plane: 42 inches (107 cm). Surface roughness: 63 microinches Military part number: M28839/-01- (Three digits indicating the nominal length of the wa
6、veguide; i.e., -030 identifies a length of 30 feet). Cross reference data: Dash AN Manufacturers Commercial type NSN Number nomenclature code 01-xxx RG- 387/U 94661 PM457-10-1 5985-01-018-5848 Referenced documents. In addition to MIL-DTL-28839, this specification sheet references the following docum
7、ents: ASTM-B241/B241M The margins of this specification are marked with vertical lines to indicate where modifications from this 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
8、 are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations. Custodians: Preparing activity: Army CR Navy EC Air Force 85 DLA CC DLA CC (Project 5985-2013-016) Review activities: Army MI Navy SH, OS Air Force 99 NOTE: The activities
9、 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.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
