1、COUPLERS, *. , MIL-C-55693 (EL) .I “LIMENT 3. I *. SUPERSEDING AMENDMENT 2 2 AUGUST 1973 27 January i976 MILITARY SPECIFICATION * . ., ANTENNA CU-942( )/AR, CU-1894( )/AR AND ANTENNA AS-1703( )/AR -I - ._ : . * . =: .- . - . This amendment forms a part of Military Specification ML-C-55693(EL) ,. dat
2、ed 3 February 1970, and is approved for use by all departments and . agencies of the Department of Defense. Delete “Preproduction“ and replace with “First Article“ wherever mentioned in the Specification. Page 1 . 1.1: Change “75.95“ to “80.00“ 2.1: Delete “MIL-T-5422 Testing, Environmental, Aircraf
3、t Electronic . Equipment“. Page 2 2.1 (Last Para.) : 3.1: Change “75.95“ to 80.00“. Delete “supplier“ and substitute “suppliers“. Page 3 3.2.2: 0.75 lbs.“ Delete “(less .). . . 14 oz.“ and replace with “shall not exceed Page 4 3.7: Delete in its entirety. FSC 5821 Copyright Communications - Electron
4、ics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-55693 (3) 58 9999906 0169089 3 m ,- p MIL-C-55693(EL) _* AMENDMENT 3 . Page 5 3.11.1: Delete in its entirety and substitute: “3.11.1 Temperature-Altitude (See
5、4.8.1). - The equipment shall be E, subjected to and meet the following temperature-altitude combination requirements: a. Operating frqm -650F to 131F b. Operating with duty cycle: 30 minutes ON, 15 minutes OFF, from 131F to 160F c. range of -80F to 185F.“ Equipment shall be capable of storage over
6、the non-operating Page 6 3.11.5: tion MIL-T-5422, Curve IV“ and substitute “The equipment(s) shall meet the vibrationrequirement of Crve IV, of MIL-E-5400 for aircraft and heli- copters“. Delete “The equipment shall meet the vibration tests of Specifica- 3.12.2 : Change “75.95“ to “80.00“. Page 7 3.
7、13.1: Change “75.95“ to “80.00“. 3.12.4: Add the following: isotropic gain, of the Antenna Coupler(s) as used with the AS-1703 whip Antenna shall be as shown on Figure 1.“ 3.14: Delete in its entirety. “3.13.4 Gain (See 4.10.4). - The minimum perfornance, reference 3.18: Delete “Alignment (parts) 3.
8、7“ - Page 2 of 7 Pages i .- I- f l-; :i i Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-55693 (EL) . AMENDmNT3 . Page 8 4.1: Delete in its entirety and substitute: 114. 1
9、Responsibility or inspection. - Unless otherwise specf ied in the contract or purchase Order, the supplier is responsible for the per- formance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his ownor any other facilit
10、ies suitable for the performance of the inspec- tion requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform ciny of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and servic
11、es conform to prescribed requirements.“ Page 9 4.5: Add at the end of paragraph - “Each equipment of each lot of equip- ment shall be subjected to the Operational inspection .(4.11) prior to in- spection. inspection shall be classified as a defect and recorded as such.“ 4.5.1, TABLE I Group A Inspec
12、tion, under column headed Electrical: Delete row headed - “Power Capability 3.13.3, 4.10.1 and substitute “Power Capa- bility (rf) 3.13.3, 4.10.3“. Failure to meet any requirements as a result of the operational Page 10 4.4.5: Delete “4.4.5“ and.substitute “4.54“. Inspection, under column headed Sub
13、group I: Delete “Temperature“ and substitute “Temperature (only)“, and under Couplers, delete row “Temperature 3.11.1, 4.8.1, Altitude 3.11.2, 4.8.2“, and sub- stitute “Temperature-Altitude 3.11.1, 4.8.1“. In TABLE III - Group C Antenna AS-1703( )/AR: .4.5.3, TABLE II Group B Inspection, following i
14、nterchangeability, add the f.o llowing : - “Gain 3.13.4 4 . 10.4“ Page 11 . Change “two per month“ to “two (2) from every 250 units or 4.5.4.1.1: Change “25“ to “10O1. fraction thereof produced“. Page 3 of 7 Pages Copyright Communications - Electronics Command Provided by IHS under license with CRAI
15、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-55693 (3) SB 9799706 OZb709Z Z = .I Page 11 4.5.4.1.2: Change “25 to “100“. Delete second sentence and replace with the following: “For subsequent Group C inspection, two (2) from every 750 units or fraction the
16、reof produced“. Page 12 4.6: Delete in its entirety. 4.8 : Change “75.95“ to “80.00“. Delete “MIL-T-5422“ and substitute “MIL-STD-810“. 4.8.1: Delete in its entirety and substitute: .“4.8.1 Temperature-Altitude. - The equipment(s) shall be subjected to the test of Method 504, Procedure 1, of MIL-STD
17、-810. . of RF-input power shall be applied and maintained during the operating persod.“ Fifty (50) watts Page 13 4.8.2: Delete in its entirety. 4.8.3: MIL-STD-810, Procedure II“. 4.8.4: Delete “Specification MIL-T-5422: and substitute “Method 507 of Delete “referenced specification“ and substitute “
18、MIL-STD-108“. 4.8.5: Delete in its entirety and substitute: “4.8.5 Vibration. - The coupler(8) with AS-1703 Antenna, or equal mounted shall be subjected to the vibration test of Method 514.1, Procedure I, Curve 2, of MIL-STD-810. after vibration to verify compliance with Paragraphs 3.11.5, 3.12.3, 3
19、.13.1 and 3.13.2 at carrier frequencies of 30.50, 50.40 and 80.00 MHz.“ Tests will be performed before, during and , i , Page 4 of 7 Pages Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from
20、IHS-,-,-MIL-C-55673 (3) 58 - 7777706 01167072 3 - I- MIL-C-55693 (EL): .- . “ - AMENDMENT3 Page 13 4.8.6.1: Delete in %ts entirety and substitute: - p g y i . r 4.8.6.2: Delete in its entirety and substitute: “4.8.6.1 Equipment. - The equipment shall be subjected to the test of Method516, Procedure
21、I and III, of MIL-STD-810. be in accordance with Figure 516-2 for Flight Vehicle Equipment.“ The shock pulse shall e w k-1 “4.8.6.2 Bench handlinlr;. - The coupler shall be subjected to the test J of Method 516, Procedure V of MIL-STD-810. Performance tests shall be con- ducted befora and after shoc
22、k to verify compliance with 3.13.1 and 3.13.2 at carrier frequencies of 30.50, 50.40 and 80.00 MHz.“ 4.8.8: In second line, change “and“ to “of“. L Page 14 4.10.1 : Change “75.95“ to “80.00“. 4.10.4: Add the following paragraph: . “4.10.4 Gain. - The test procedure utilized for this test shall be th
23、at procedure submitted by the bidder with his proposal and approved by the Government. pliance with 3.13.4.“ . These approved tests shail be conducted to determine com- Page 15 4.11: Delete the third sentence and replace with the following: signal on 80.00 MHz when the coupler is vibrated at 5 gs, 2
24、5 to 55 fiz.“ “There shall be no interruption or noise in the visually displayed Page 5 of 7 Pages Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-S5693(EL) - AMENDMENT 3 -
25、Page 18 6.2.e: Add the following paragraph: I . . “6.2. e Submission of Gain Measurement Procedure referenced in 4.10.4 should be as specified in the Solicitation/Contract unless otherwise specified. This procedure should be submitted to the Contracting Officer.“ Add figure 1 shown on page 7 of this
26、 amendment. CUSTODIAN: Preparing Activity Aw-EX Army - EL Project No. 5821-Al29 Page 6 of 7 Pages Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-?- - - MIL-C-55693 (3) 58 9999906
27、 0369074 7 *. ? p w U 2 w w CL w a a z 2 a ?! U o a O I- O . - -. .i - 5 . .-c i. - I . -. P L. . pr(ir 7 Of 7 *US GOVERNMENT PRINTING OFFICE: _ Copyright Communications - Electronics Command Provided by IHS under license with CRAINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
