NAVY MIL-A-28768 B (2)-1986 ANTENNA FIXED HF GENERAL SPECIFICATION FOR《固定高频天线总说明书》.pdf

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1、- MIL-A-276B (2) 57 W 7979906 0033252 T W MI L-A-28768B (EC ) AMENDMENT 2 AMENDMENT 1 6 January 1986 MILITARY SPECIFICATION ANTENNAS, FIXED, HIGH FREQUENCY GENERAL SPECIFICATION FOR This amendment forms a part of Military Specification MIL-A-28768B(EC), dated 13 April 1984, and is approved for use w

2、ithin the Space and Naval Warfare Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. PAGE 9 3.7.6.2, line 3: Delete “one of the following impedances only: 200 ohms, 300 fhms, or 600 ohms.“ and substitute “as required to mat

3、ch the balun to the antenna feed line. PAGE 15 * 3.15.1.la: Add “(one per tower)“. * 3.15.1.lb: Add “(one per tower)“. * 3.15.1.1: Add “(one per antenna)“. * 3.15.1.ld: Add “(one per antenna)“. PAGE 17 3.15.2.3, line 1: Delete “115 B, single-phase 50 or 60 hertz (Hz)“ and substitute “115 Y, single-p

4、hase, 50 hertz (Hz) to 60 Hz“. PAGE 19 * 4.4: Delete and substitute: Y. “4.4 Quality conformance inspection. Unless otherwise specified in the detail specif; quality conformance inspection shall be as specified in 4.4.1 through 4.4.3 and TABLE III. atio * 4.5: Delete and substitute: Unless otherwise

5、 specified in the detail specification, the examinations and test specified in TABLE III shall be conducted in accordance with the applicable test methods in MIL-E-16400, except as specified in 4.5.1 through 4.5.13.“ The margin of this amendment is marked with an asterisk to indicate where changes (

6、additions, modifications, corrections, deletions) from the previous amendment 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 document

7、 based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. “4.5 Test methods. Preparing activity: (Project No. 5985-N549(EC) 1 NAVY - EC 1 of 1 AMSC N/A FSC 5985 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-