1、MIL-A-29520( EC) 29 January 1988 MILITARY SPECIFICATION ANTENNA GROUP, OE-416( V)/SRC, 4-MHz TO 30-MHz RECEIVING TWIN WHIP This specification is approved for use by the Space and Naval Warfare Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the De
2、partment of Defense. 1. SCOPE 1.1 Scope. This specification covers the design, development, performance, and test requirements for the Antenna Group, OE-415(V)/SRC, hereinafter referred to as the antenna group. The antenna group is a nominal 4.1-meter (m) (14-foot (ft) twin-whip configuration which
3、provides broadband frequency coverage in the 4-megahertz (MHz) to 30-MHz range for high frequency (HF) shipboard receiving systems. 2. APPLICABLE DOCUMENTS 2.1 Government documents, 2.1.1 Specifications and standards. The following specifications and standards form a part of this specification to th
4、e extent specified herein. Un1 ess otherwise specified, the i ssues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation. Beneficial comments (recommendations, additions, de
5、letions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Space and Naval Warfare Systems Command, SPAWAR 003-121, Washington, OC 20363-5100, by using the self-addressed Standard! zati on Document Improvement Proposal (OD Form 1426) appearing a
6、t the end of this document, or by letter. . AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is un1 imi ted. THIS DOCUMENT CONTAINS 17 PAGES; FSC 5985 Licensed by Information Handling ServicesSPEC IF I CAT I ONS MI L ITARY MI LIS - 901 MIL- P-15024 MIL-P-15024/5 MIL-E-164
7、00G MIL-E-17555 STANDARDS MILITARY MIL-STD-108 MIL-STD-109 MIL-STD-167-1 MI L-STD-454 MIL - STD-965 MI L -STD- 13 10 MIL-STD-1364 MIL-A-29520( EC) Shock Test, H. I. (High-Impact), Shipboard Machinery, Equipment And Systems, Requirements For Plates, Tags, And Bands For Identification Of Equipment P1
8、ates, Identification Electronic, Interior Communication, And Navigation Equipment, Naval Ship And Shore: General Specification For Electronic And Electrical Equipment, Accessories, And Provisioned Items (Repair Parts), Packaging Of Definitions Of And Basic Requirement For Enclosures For Electric And
9、 Electronic E qu i pmen t Quality Assurance Terms And Definitions Mechanical Vi brations Of Shipboard Equipment (Type I - Environmental And Type II - Internally Excited) Standard General Requirements For Electronic Equipment Parts Control Program Shipboard Bonding, Grounding, And Other Techniques Fo
10、r Electromagnetic Compatibility And Safety Standard General Purpose Electronic Test E qu i pmen t 2.1.2 Government drawings, The following Government drawing forms a part of this specification to the extent specified herein. Unless otherwtse specified, the issue shall be those in effect on the date
11、of the solicitation. DRAWING SPACE AND NAVAL WARFARE SYSTEMS COMMAND (SPAWAR) 03 30409 Installation Guidance Details, OE-( )/SRC Antenna (4-30 MHz, 14 ft) Twin Whip 2 Licensed by Information Handling ServicesMIL-A-27520 57 E 9979706 O054436 4 E s) . s, MIL-A-29520 ( EC) (Copies of specifications, st
12、andards, and drawings, required by contractors in connection with specific acquisition functions should. be obtained from the contracting activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of specification to the extent specified herein,
13、Unless otherwise spec issues of the documents whichare DoD adopted shall be those listed issue of the DoDISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be of the nongovernment documents which is current on the date of the solicit
14、ation. this fied, th n the . the issue AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI ) C95.2-66 Y32.16-1975 Radio Frequency Radiation Hazard Warning Symbol Reference Designations For Electrical And Electronic Parts and Equipments (Application for copies shall be addressed to the American National Stan
15、dards Institute, 1430 Broadway, New York, NY 10018. ) (Nongovernment standards and other pub1 ications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational services. 1 2.3 O
16、rder of precedence. In the event of a conflict between the text of this specification and the references cited herein (except for associated detail specifications, specification sheets, or MS standards), the text of this specification shall take precedence. Nothing in this specification, however. sh
17、all suDersede am1 icabl e 1 aws and regulations unless a spec1 f ic .I exemptin has been obtained. 3. REQUIREMENTS . 3.1 General. The antenna group sha to the extent specified herein. 1 be in accordance with MIL-E-16400G 3.1.1 First- article. When specified in the contract or purchase order, a sampl
18、e shall be subjected to first article inspection (see 4.4 and 6.3). 3.1.2 Operational requirements. The antenna group shall give reliable performance within the 1 imits specified herein, under conditions of intermittent or continuous operation during exposure to adverse conditions normally encounter
19、ed in Naval shipboard communication service. Mechanical and electrical ruggedness is of paramount importance for assurance of re1 iable perf o ma nc e. 3 Licensed by Information Handling Services - -_ - - MIL-A-29520 59 77999b 0054433 b H 3.1.3 Government-furnished material (GFM) . GFM, if any, incl
20、uding either Government-furnished information (GFI 1 or Government-furni shed equipment (GFE), shall be as specified (see 6.2 and 6.81, shall be in accordance with the Parts, materials and processes paragraph of MIL-E-16100G to the extent specified herein, 3,2 Parts, materi al s , and processes. Par
21、ts, material s, and processes 3,2.1 Selection of parts, materials, and processes. Selection of parts, materials, and processes shall be in accordance with the Selection paragraph of MIL-E-16400G to the extent specified in 3.2.2 I 3.2.2 - Parts. Parts shall be as specified in 3.2.2.1 through 3.2.2.4.
22、 1 3.2.2.1 Individual selection. The performance of the antenna group shall not be deDendent on the selection of individual parts, unless such selection is specifically approved by the procuring activity. only with the approval of the procuring activity. use nonstandard parts shall be submitted in a
23、ccordance with MIL-STO-965. 3,2.2.2 Nonstandard parts usage. Nonstandard parts shall be employed Requests for approval to 3.2.2.3 Connectors, radio frequency (RF) . RF connector and mating. assembl les shall be as specified in SPAWAR Drawing (OWG) 0330409. 3.2.2.4 Insulators. Insulators shall be of
24、a type to conform to the electrical requirements specified in 3.6.3. No coating material in any form shall be applied to any portion of ceramic insulation material that forms a part of the antenna group instal 1 ation. Fi berglass insu1 ators chal 1 be treated to resist deterioration from sunlight a
25、nd salt spray and shall be nonhygroscopic, The antenna insulator chal 1 be a permanently assembled single part . 3.2.3 Materials. Materials shall be as specified in 3.2.3,l through 3.2,3.4, 3.2,3.1 Selection of material s. Where metal -to-metal contact of dissimilar metals occurs, the selection of m
26、aterials shall be in accordance with the Dissimilar metals paragraph of MIL-E-l6400G, for combinations of metals subject to immersion, splashing, or spray from sea water. 3.2.3,l.l Attachment hardware. Attachment hardware shall be limited to the types of metal-to-metal contact specified in a through
27、 d: a. Aluminized hardware to aluminum metal b. Brass hardware to brass metal c . Brass hardware to austenitic corrosion-resistant metal d. Corrosion-resistant steel -to-steel metal subject to the approval of the procuring activity d) Licensed by Information Handling Services. d e a I tem Quantity A
28、ntenna Group Antenna, 4.1-rn (14-ft) whip 2 Coaxial cable termination box 1 Interconnecting feed assembly 1 Mating connector assembly kit 1 MIL-A-27520 57 7777706 0054438 8 m Nomencl ature OE-416(V)/SRC AS-3771 (V)/U J-( )/SRC - MIL -A- 29520 ( EC 3.2.3.2 Unacceptable materials. Materials specified
29、in the Unacceptable materials paragraph in MIL-E-16400G shall not be employed in the antenna group. 3.2.3,3 Antenna and coaxial cable termination box material s. Whip elements shalsination box (feedbox) shall be made of aluminum. Whips shall be designed to mount on steel surfaces. 3.2.3.4 Magnetic m
30、aterials. The antenna group shall have a minimum magnetic signature in accordance with the requirements specified in the Magnetic materials paragraph of MIL-E-16400G. 3.2.4 Processes. Processes shall be as specified in 3.2.4.1 and 3.2.4.2. 3.2.4.1 Soldering. Soldering shall conform to MIL-STD-454, R
31、equirement 5. 3.2.4.2 Welds. Structural welding shall conform to MIL-STD-454, Requirement ir 3.3 Design. Antenna group design shall be as specified in 3.3.1 through 3.3.9.1. 3,3.1 Antenna group capability. When installed in its design shipboard location, the antenna group shall provide a receiving c
32、apability in the 4-MHz to 30-MHz range. Major components of the antenna group shall be as specified in TABLE I. TABLE I. Major components list. Indenture 1.2 1.3 1.4 3.3.2 Functional interface. The antenna group shall operate without tuning over the design frequency range and is intended for mountin
33、g on a ti 1 ti ng mec hani sm. 3.3.3 Internal interfaces. Internal interfaces of the antenna group shall include interconnections between the two whip antennas and the coaxial cable termination box, and between the coaxial cable termination box and the transmission line cable. The feedbox shall be l
34、ocated equidistant between the two whip antennas. 5 Licensed by Information Handling ServicesMIL-A-29520 ( EC) 3.3.4 Mechanical interfaces. The antenna group shall interface with an OA4 )(V)/SR tiltlng mechanism on the ship in accordance with the mounting configuration and requirements of SPAWAR OWG
35、 0330409. 3.3,5 Protective devices. An electromagnetic pulse (EMP) protective device, Fischer Custom Communications Model FCC-250A-350A-IL-21/U, or equal, shall be installed in the coaxial cable termination box. 3.3.6 Reliability design. Reliability design shall be as specified in 3,3.6,.1 and 3.3.6
36、.2. 3.3.6,l Derating, Temperature, power, and voltage stress levels and ratios, as applicable, shall be explicitly included in all mean-time-between-fail ures estimates. Derating shall be in accordance with MIL-STO-454, Requirement 18. minimize failures due to parameter change as a function of manuf
37、acturing tolerances, environmental factors, and age. The factors specified in a through h shall be considered: 3.3.6.2 Tolerance sensitivity. The design of the antenna group shall a. Normal manufacturing to1 erances , i ncl udi ng sol deri ng, wi ring, placement, and machiner-v tolerances b, d. f. g
38、. h. to1 erances C, e. from exposure to effects insu1 ators Normal- variations in material quality, including finish Range of ambient temperatures and their rate of change Vibration levels, steady-state and transient Humi di ty Operational aging, particularly that of dielectric materials sun, ozone,
39、 and stack gasses Nonoperational aging (storage 1 ife), shipping and hand1 ing Salt spray and stack gas deposits, particularly those on 3.3.7 Maintenance design. Maintenance design shall be as specified in 3,3.7,1 through 3.3.7.6. 3.3,7.1 Throw-away subassemblies. The designation of subassemblies as
40、 throw-away shall be subject to approval of the procuring activity. 3.3,7.2 Repairable subassemblies, Subassemblies designated as repairable shall be designed for ease of maintenance (see 6.6). 3,3,7.3 Adjustment and alignment. The antenna group shall not require componentadjustment or alignment whe
41、n installed in the ship, or during maintenance or repair. e Licensed by Information Handling ServicesMIL-A-23520 57 77393Ob 0054440 b W MIL-A-29520( EC) 3.3.7.4 Accessibility. The coaxial cable termination box shall be so arranged that access to any part shall not require removal of other parts, exc
42、ept access covers. 3.3.7.5 Access covers. Access covers shall be retained by captive fasteners. Means shall be provided to prevent covers from falling or sliding away when opened. The design of antenna group components shall be such that all maintenance and repair action may be performed using only
43、standard general purpose electronic test equipment (GPETE), or substitute standard GPETE, as specified in MIL-STO-1364. 3.3.7.6 Test equipment. 3.3.8 Mechanical design. The design of the antenna group shall conform to the Rounded corners and edges and Moisture pockets paragraphs in - MIL-E-16400G. 3
44、.3.8.1 Enclosures. The degree of enclosure for the feedbox shall be splashproof as specified in MIL-STO-108. 3.3.8.2 Antenna whip elements. The tops of the antenna whip elements shall be closed to prevent the entry of water and salt spray. The Antenna Assembly, AS-3771(V)/U, as a whole, shall be spl
45、ashproof as specified in MIL-STD-108. - 3.3.9 Safety design. 3.3.9.1 Electric shock hazard labeling. Hazard labels shall be The safety requirements for the antenna group shall be in accordance with MIL-STO-454, Requirement 1. permanently attached to each antenna in a position readily visible to pers
46、onnel in the area and shall contain the following in the upper triangle: . DANGER RADIO FREQUENCY SHOCK HAZARD The following statement shall appear in the lower triangle: A RADIO FREQUENCY SHOCK HAZARD MAY EXIST TO PERSONNEL CONTACTING THE ANTENNA Color and format shall conform to ANSI C95.2-66 requ
47、irements. Dimens,m O as specified in ANSI C95.2-66, Figure 1, shall be at least 0.3185 centimeter (cm (0.125 inch (in.). 3.4 Construction. Construction shall be as specified in 3.4.1 and 3.4.2 3.4.1 EMP devices installation. The specified EMP devices (see 3.3.5) shall be mounted in the feedbox at th
48、e antenna feed point. 7 Licensed by Information Handling ServicesMI L-A-29520 ( EC ) 3.4.2 Coaxial cable termination box. The coaxial cable termination box and all electrical connections shall be resistant to an increase in generation of intermodulation products as a result of the effects of salt ai
49、r and constant vibration at 0.25 g amplitude. Techniques shall be employed such as, but not limited to, silver plating, brazing, or silver soldering. 3.5 Transportability. All antenna group equipment shall be transportable by air, rail, truck, barge, or ship, The maximum dimensions of any item, crated, shall not exceed 6.1 m (20 ft) in any dimension, nor 1.8 m (6 ft) in either of the other dimensions. 3.6 Performance characteristics, Performance characteristics shall be as specified in 3.6,1 through 3.6.3, 3.6.1 Frequency range, The antenna group shall conform to all the re
