NAVY MIL-A-28729 B (2)-1981 ANTENNA COUPLER GROUP CU-1382( ) (HF BB WIDE DYNAMIC RANGE)《CU-1382( )天线耦合器组(HF BB宽动态范围)》.pdf

1、KtL-A-28729B( EC) AMENDMENT 2 26 phase correlated“ and substitute: “Type I - High linearity, 8-output Type II - High linearity, 8-output, phase correlated Type III - High linearity, i-output Type IV - High linearity, 16-output, phase correlated“ PAGE 2 a a 3.2, line 2: Delete “Types I and II“ and su

2、bstitute “Q-pes I through IV“; line 4: Insert “or sixteen“ between “eight“ and “receivers“ and line 8: “each type, It Delete “both types“ and substitute PAGE 3 3.2.1: Delete last sentence. 3.2.2(a) : Delete “Input filter“ and substitute “RF Input/bandpass filter“. 3.2.2, after line 11: Add “The func

3、tional subdivisions shall be interchangeable as follows: a. b. c. RF InpUt/bandpaES filter - Types I and III; Types II and IV Amplifier/Output Isolator - Types I and III; Types II and IV Power Supply - mi types“. 3.2.6: Delete and substitute: “Non-standard warts. Approval of non-standard parts shall

4、 be in accordance with MIL-E-16400 except that prior to selection and request for approval, the procedures in MIL-STD-1631 shall be followed. power supply assembly with the exception of power transformers.“ Non-standard parts shall not be used in the PAGE 4 3.2.15: Delete third and fourth sentences.

5、 * 3.2.1.6, line 3, berore “The“ Insert“For Types I and II“; line 4, after “(45.72cm)“ Add . “end for Types III and IV, the equipment chassis shall have a maximum depth of 10 inches (25.40cm).“ Delete “It“ and substitute “Types I and II“; after line 11: a 3.2.17, line 2: Add “Types III and IV shail

6、be constructed ai shown- in eGURE 1A.“ a FIGURE 1, title: Insert “Types I and 1I“before mounting. THIS DOCUMENT CONTAINS - 9 -_ PAGES. , *- FSC 5985 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. .HIL-A-287299 (2) 59 9999906 0032375 2 m i . . Inse

7、rt the * following as the second sentence: Shall be O dB f2 dB from 2 to 32 MHz. lThe insertion gain for the Types III and IV antenna couplers With input filter bypassed, insertion gain shall be O dB t2 dB.“ * FIGURE 2: Delete “Type II“ and substitute “Types II and IV“ and Delete “Type I“ and substi

8、tute “Types I and III“. * PAGE 10 FIGURE 3: Delete Type I“ and substitute “Types I and III“. PAGE 11 FIGURE 4: Delete “Type II“ and substitute “Types II and IV“. PAGE 12 * 3.5.12: Insert the following as the second sentence: “The amplification of the desired signal shall not be reduced by more than

9、3 dB when the level of the undesired signal is increased to 2.1 volts for the Type III multicoupler and to 2.38 volts for the Type IV multicoupler.“ * * * * * 3.5.16, line 1: Insert “in the Types I and II multicouplers“ between “products“ and “in“. 3.5.16, line 4: Insert the following as the second

10、sentence: “Spurious products in the Types III and IV multicouplers in the 0.3 to 32 MHz frequency range present at the outputs of the multicoupler shall be at least -65 dB relative to 0.7 volt nns when two 0.7 vrms signals are applied to the multicoupler input.“ 3.5.17: Add the following as the seco

11、nd sentence: “The noise figure at any frequency within the specified frequency range of the multicoupler shall be less than or equal to 11.5 dR for the Type III and less than or equal to 12 dB for the Type IV multicoupler.“ PAGE 13 3.5.18, line 5, after “Serial Number“ insert “A-17“. 3.5.18: Insert

12、the following as the third sentence: “Type IV multicoupler shall have phase correlation between all outputs and all other Type IV multicouplers within an absolute range of 30 over the specified frequency range of 2 - 30 MHz, input filter connected. addition, the Type IV multicoupler shall have phase

13、 correlation with the phase standard CU-1382 ( ) , S/N In , within 1.5O under the same conditions.“ PAGE 15 TABLE I and TABLE II: Add “Surf ace Examination 3.2 4.4.1.16“ TABLE II, “Power output filter“: Delete “output“ and insert “input“. PAGE 16 4.4.1.1,.line 3, after “eight“ insert “and sixteen“.

14、4.4.1.2.1: Delete in its entirety,. *.e;- 4.4.1.3, line 2: Delete “type II“ and substitute “Types II and IV“. 4.4.1.4, line 1, before “Measurements“ Insert “For Types I and II,“; 4.4.1.4, Delete third sentence. Page 3 of 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without

15、license from IHS-,-,-* * * * MIL-A-28727B (2) 57 77777Ob 0032277 b 9 MIL-A- 28729B(EC) AMNDMENT 2 4.4.1.4: Add the following as the sixth sentence: “For Types III and IV, measurement shall be made vith the input filter in the circuit to determine conformance with 3.5.12 vith a desired signal having

16、an input level equivalent to 140 microvolts. bypassed, the desired signal level Shall be 140 microvolts. shall be an input level equivalent to 350microvolts.“ PLth the filter The undesired signal level initially PAGE 17 4.4.1.4.5, line 1, Delete “100 microvolts“ and Substitute “100 or 140 microvolts

17、 for Types I, II and Types III, IV, respectively“. 4.4.1.4.8: Delete “,“ after “adjusted“ and before “signal“. PAGE 18, 4.4.1.6: Delete second sentence. 4.4.1.7, line 2, Delete “Type 11“ and substitute “Types II and IV“. PAGE 19 FIGURE 6, NOTE: Delete last sentence PAGE 24 4.4.1.9, line 1, after “ov

18、erload tests“.hsert “on Spes I and II“; Add as 4.4.1.11, first line, Insert “3.5.8 and“ after “with“ and insert “(CS02)“ after “3.5.10“. 4.4.1.11.1, second line, Insert “-lOdBm“ after “a“; Delete “level at any output“ and 4.4.1.12.1, last line, Delete “parts“ and substitute “ports“. the fourth sente

19、nce: “For Types III and IV, the overload voltage shall be 14 volts rms.“. substitute “at the power line input connector.“ PAGE 25 FIGllRE 11, NOTE: Delete last sentence. PAGE 27 Add new paragraph: “4,4.1.16 Surface examination. Surface examination shall be in accordance with MIL-E-16400.“ 4.4.2.2: 4

20、.4.2.5, last line: Delete I. and add “(0.3 to 2.0 MHz measurements shall not be required).“ Delete last sentence and substitute “Swept frequency techniques shall be used to measure gain over the 2 to 30 MHz range.“. NOTE: (additions, modifications, corrections, deletions) from the previous amendment

21、 were made. was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. ments of this document based on the entire content irrespective of the marginal notations and relationship to the last previous amendment. The margins of this amendment are marked with an asterisk to indicate where changes This Bidders and contractors are cautioned to evaluate the require- Page 4 of 4 .- Preparing activity : Navy (EC) (Project 5985-N493) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-