1、INCH-POUND MIL-DTL-23806B 22 February 2007 SUPERSEDING 1. SCOPE 1.1 Scopeouter conductors (1.2 Classificationand impedances, as specified (1.2.1 1.2.2 1.2.3 1.2.4 (see 3.1 and 6.21.2.5 AMSC Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHSMIL-C-23806A(EC)
2、23 June 1969 DETAIL SPECIFICATION CABLE, RADIO FREQUENCY, COAXIAL, SEMIRIGID, FOAM DIELECTRIC GENERAL SPECIFICATION FOR Inactive for new design after 10 July 2000 This specification is approved for use by all Departments and Agencies of the Department of Defense. . This specification covers foam die
3、lectric, coaxial semirigid radio frequency cables with smooth see 6.1). . The cable covered under this specification is to be furnished in the following types, sizes, see 3.1 and 6.2). Types. Cable will be of the following type(s); Type I Unjacketed Type II Jacketed (polyethylene) Sizes. Cable is to
4、 conform to the following outside diameters (exclusive of jacket); .500 inch, nominal .875 inch, nominal Impedance. Impedances will be 50 or 75 ohms. Type designation. The type designation is derived from the “RG-XXX/U” nomenclature as specified ). Part or Identifying Number (PIN). The PIN consists
5、of the applicable “RG” designation (see 6.2). RG - XXX /UComponent Number Basic indicator (see 1.2.5.1) (see 1.2.5.2) (see 1.2.5.3) Comments, suggestions, or questions on this document should be addressed to: Commander, Defense Supply Center Columbus, Attn: VAI, P.O. Box 3990 East Broad Street, Colu
6、mbus, Ohio 43218-3990 or emailed to RFConnectorsdscc.dla.mil. Since contact information can change, you may want to verify the currency of this address formation using the ASSIST database at in http:/assist.daps.dla.milN/A FSC 6145 -,-,-MIL-DTL-23806B 21.2.5.1 Component. Cables are identified by the
7、 two-letter symbol “RG”. 1.2.5.2 Number. The number indicates a particular type of cable which has been designed with certain electrical and physical characteristics specified herein. The number comprises one or more digits with or without a letter (A, B, C, etc.) and is preceded by a hyphen. The le
8、tter indicates a modification of the basic type. 1.2.5.3 Basic indicator. The basic specification for which a cable has been designed is indicated by the symbol “/U” denoting general utility. This classification includes two or more general installation classes: airborne, shipboard, and ground. 2. A
9、PPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has bee
10、n made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following spec
11、ifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATION A-A-59551 - Wire, Electrical, Copper (Uninsulated) FEDERAL STANDARD FED-S
12、TD-228 - Cable and Wire, Insulated; Methods of Testing DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-23806/1 - Cable, Radio Frequency, Coaxial, Semirigid, Foam Dielectric, .500 inch, 50 and 75 Ohm, (RG-231A/U, RG-331/U, RG-334/U and RG-335/U MIL-DTL-23806/2 - Cable, Radio Frequency, Coaxial, Semirigi
13、d, Foam Dielectric, .875 inch, 50 and 75 Ohm, (RG-332/U, RG-333/U, RG-336/U and RG-305A/U DEPARTMENT OF DEFENSE STANDARDS MIL-STD-129 - Marking for Shipment and Storage MIL-STD-130 - Identification Marking of U.S. Property MIL-STD-202 - Test Methods for Electronic and Electrical Component Parts (Cop
14、ies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Provided by IHSNot for ResaleNo reproduction or networking permitted wit
15、hout license from IHS-,-,-MIL-DTL-23806B 32.3 Non-Government publications. The following documents for a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM B566 - Wir
16、e, Aluminum, Copper-Clad. ASTM D1248 - Polyethylene Plastics Extrusion Materials for Wire and Cable. (Copies of these documents are available online at http:/www.astm.org or from the ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence.
17、 In the event of conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtain
18、ed. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheets. In the event of any conflict between requirements of this specification and the specification sheet, the latter shall govern. 3.2 Ma
19、terials. The materials used in the construction of the cable shall be as specified herein and as in the detail specification sheet. When a specific material is not specified, suitable materials for the intended application shall be used and shall be such that the cable meets the requirements specifi
20、ed herein. 3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the operational and maintenance requirements, and promotes economical
21、ly advantageous life cycle costs. 3.2.1.1 Inner conductor. The inner conductor of the cable shall conform to type S, uncoated, solid copper wire in accordance with A-A-59551 or copper-clad aluminum wire requirements of ASTM B566, except that sizes shall be as specified in the detail specification sh
22、eet. For purposes of testing in accordance with A-A-59551 or ASTM B566, nonstandard sizes specified in the specification sheet shall meet the tensile strength and elongation requirements of the next largest standard size. 3.2.1.2 Inner conductor joints. There shall be no joints in solid conductors m
23、ade subsequent to the last drawing operation. Joints shall be brazed or silver soldered, using a no acid flux. The overall specified conductor dimension tolerance shall be maintained and the tensile strength of the joint shall be equivalent to or greater than that of the inner conductor itself. 3.2.
24、2 Dielectric material. The core material shall be continuous homogeneous, unicellular foam polyethylene extruded on the inner conductor. 3.2.3 Outer conductor. The outer conductor of the cable shall be smooth seamed or seamless tubular aluminum with an electrical resistivity of 0.077 ohm maximum at
25、20C. Joints shall be within the specified dimension and tensile strength limits for the conductor itself. 3.2.3.1 Surface integrity. The outer conductor shall be round, smooth and free from grooves, marks or scratches or any other deformities greater than .004 inch in depth. Provided by IHSNot for R
26、esaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23806B 43.2.4 Jackets (when specified). Jackets, when specified, shall consist of a continuous sheath of polyethylene conforming to type I or II, class C in accordance with ASTM D1248. 3.3 Design, construction and dime
27、nsions. Design, construction and dimensions of the cable shall be as specified in the detail specification sheet (see 3.1). 3.3.1 Temperature rating. The temperature operating range shall be -55C to +85C. 3.4 Electrical requirements. The electrical requirements for the cables shall be as follows. 3.
28、4.1 Jacket spark (applicable to jacketed cable only), There shall be no breaks or punctures in the jacket when tested as specified in 4.5.2. 3.4.2 Continuity. The inner and outer conductors in each shipping length of cable shall be continuous, when tested as specified in 4.5.3. 3.4.3 Dielectric stre
29、ngth. The completed cable shall withstand the voltage specified in the detail specification sheet (see 3.1) without breakdown, when tested as specified in 4.5.4. 3.4.4 Insulation resistance. When cables are tested as specified in 4.5.5, the insulation resistance per 1,000 feet shall not be less than
30、 10,000 megohms. 3.4.5 Attenuation. The maximum shall be as specified in the detail specification sheet (see 3.1). The cable shall not exceed the maximum attenuation when tested as specified in 4.5.6. 3.4.6 Impedance. The impedance shall be as specified in the detail specification sheet and the requ
31、irement shall be met when tested in accordance with 4.5.7. 3.4.7 Capacitance. When the cable is tested as specified in 4.5.7.1, the capacitance shall be as specified in the detail specification sheet (see 3.1). 3.4.8 Velocity of propagation. When cable is tested as specified in 4.5.7.2, the velocity
32、 of propagation shall be as specified in the detail specification (see 3.1). 3.4.9 Voltage Standing Wave Ratio (VSWR). The VSWR of the specimen shall not exceed the values specified in the detail specification sheet (see 3.1), when tested as specified in 4.5.8. The test connectors shall be included
33、as part of the cable and shall comply with the requirements specified herein. 3.5 Environmental requirements. The environmental requirements for these cables shall be as follows. 3.5.1 Bending. When specified in the detail specification sheet (see 3.1), the cable shall meet the requirements of 3.4.3
34、 and 3.4.9, after being subjected to the bending tests specified in 4.5.9. There shall not be any evidence of wrinkles, splits, or fractures of the outer conductor after the bend test. 3.5.2 Temperature cycling. When specified in the detail specification sheet (see 3.1), there shall be no evidence o
35、f mechanical damage or insulation separation, and the cable shall meet the requirements of 3.4.9 after being subjected to the temperature cycling test as specified in 4.5.10. Insulation separation is defined as expansion, detraction, or separation (loose fit) of insulation on the inner conductor. 3.
36、5.3 Outer conductor flaring. There shall be no splitting or cracking of the flared section when tested as specified in 4.5.11. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-23806B 53.6 Marking. The cable shall be marked in accordance with M
37、IL-STD-130 with the type designation, USN designation (see 3.6.1), CAGE or logo, and the manufactures name. The cable shall be marked with the required information specified herein at a minimum of every 2 feet. Marking shall not permanently indent, deform, or otherwise damage the jacket or outer con
38、ductor. Marking shall be legible and capable of withstanding normal installation practices. Marking shall withstand the temperature cycling test in 4.5.10. . 3.6.1 “USN” prefix. The designation of all cable acquired under this specification shall bear the prefix “USN”, except that in the case of sma
39、ll cables the prefix “N” shall be used. Cable acquired under a contract which either permits or requires any changes in any of the conditions or requirements of this specification shall not bear the prefix “USN” nor any abbreviation thereof. In the event a cable sample fails to meet the requirements
40、 of this specification, the manufacturer shall remove the “USN” or “N” prefix from the sample tested, and also from all those cables represented by that sample. 3.6.2 Container. In addition to any special marking required by the contract or order, the shipping container or reel shall be marked in ac
41、cordance with MIL-STD-129, and as follows: a. Length of each piece, in the order wound, and total length of cable. b. Nominal characteristic impedance. c. The following warning: “WARNING: KEEP ENDS SEALED; MOISTURE DAMAGES CABLE; STORE IN COOL, DRY LOCATION.” 3.7 Workmanship. Cable shall be manufact
42、ured and processed in a careful and workmanlike manner in accordance with good design and sound practices. The cable shall be free from any burrs, die marks, chatter marks, imperfections, or other foreign material which may affect its serviceability. 4. VERIFICATION 4.1 Classification of inspection.
43、 The inspections specified herein are classified as follows. a. Materials inspection (see 4.2). b. Conformance inspection (see 4.4). c. Periodic inspection (see 4.4.1.4) 4.2 Materials inspection. Materials inspection shall consist of certification supported by verifying data that the materials speci
44、fied in table I, used in fabricating the cables, are in accordance with the applicable referenced specification or requirements prior to fabrication. TABLE I. Materials inspection. Material Requirement paragraph Applicable specification Wire, copper Aluminum Polyethylene 3.2.1.1 3.2.1.1 3.2.4 A-A-59
45、551ASTM B566ASTM D12484.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with the test conditions specified in the “GENERAL REQUIREMENTS” of MIL-STD-202. Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
46、rom IHS-,-,-MIL-DTL-23806B 64.4 Conformance inspection. 4.4.1 Inspection of product for delivery. Conformance inspection shall consist of materials inspection, production inspection, and groups A, B and C inspection. Group A, B and C tests shall all be preformed on the first order, regardless of siz
47、e, by any manufacturer producing cable to this specification for the first time. 4.4.1.1 Inspection lot. An inspection lot shall consist of all cable covered by a single specification sheet, produced under the essentially the same conditions, and offered for inspection at the same time. 4.4.1.2 Grou
48、p A inspection. Group A inspection shall consist of the examinations and test specified in table II, in the order shown. TABLE II. Group A inspection. Examination or test Requirement paragraph Test paragraph Sampling plan Subgroup 1Visual and mechanical Subgroup 2Jacket spark (when applicable) Conti
49、nuity Dielectric strength Insulation resistance Attenuation 1/ 3.1, 3.6 and 3.7 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.5.5 4.5.6 See 4.4.1.2.1 100 % Inspection required 1/ At 400 MHz only. 4.4.1.2.1 Sampling plan. Statistical sampling and inspection for subgroup 1 shall be specified in table III, except the number of sample units shall not be more than two times the number of reels in the inspe
