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Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Microwave Engineering Theme Crossword Puzzle
April 11, 2021

This Microwave Engineering Crossword Puzzle for April 11th has many words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. As always, this crossword contains no names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort unless it/he/she is related to this puzzle's technology theme (e.g., Reginald Denny or the Tunguska event in Siberia). The technically inclined cruciverbalists amongst us will appreciate the effort. Enjoy!


Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Microwave Engineering Theme Crossword Puzzle for April 11th, 2021 - RF Cafe

ACROSS DOWN
1. The ratio of the charge on a conductor to its potential

9. Intermodulation (abbr.)

10. Unit of length (abbr.)

11. Electrical safety organization (abbr.)

12. 3 GHz to 30 GHz

14. Logs onto a hard drive

16. Frequency Division Duplex

18. Solid of rotation whose sides are the hypotenuse of a right triangle (pl.0

21. Unit of time (abbr.)

23. Morse Code for "from"

24. Parts _____

25. What is the name of the unit of angular measurement equal to one ninetieth of a right angle

28. Traditional term for a person who enjoys helping newcomers get started in ham radio - a mentor

30. Be behind in phase

31. The design component of total product cost (abbr.)

33. Readability, Signal, and Tone (QoS report type)

35. A series of numbers where there are as many numbers above it as below it in the series

37. Unix, Linux or Windows (abbr.)

38. Amateur radio operators

40. Automatic Calibration System (abbr.)

41. MS's server-side script engine for dynamically-generated web pages (abbr.)

43. Prefix meaning ground or earth

44. Unit of volume (abbr.)

45. ______-board

46. Signal-to-noise ratio (abbr.)

49. Peripheral Component Interface (abbr.)

50. Specialized mobile radio (abbr.)

52. _____ Percy Maxim, founder of the ARRL

55. Lowest operational frequency of a waveguide

57. Prefix meaning ground or earth

58. Chemical symbol for neptunium

60. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)

61. Has a positive phase wrt a reference

62. Image file format name extension

64. The lowest region of the ionosphere found approximately 25 to 55 miles above Earth (hyph.)

66. Schematic label for voltage supply node

68. Sound frequency in the human hearing range (abbr.)

69. Chemical symbol for nickel

70. Chemical symbol for iron

71. Added signal content to offset losses or distortion

1. Geometrical figure defined as a curve in which every point is equidistant from a fixed point

2. Modulation type (abbr.)

3. Instrument for measuring current (pl.)

4. Logic family

5. Perform a quantum event by penetrating a seemingly impassable barrier

6. ___-AZIMUTH telescope mount

7. Chemical symbol for cesium

8. 30 GHz to 300 GHz

13. Frequency Division Duplex

15. Sudden, short-lived increase in voltage or current (pl.)

17. The "D" in DARPA

19. Applies a lubricant

20. Stock symbol for National Semiconductor

22. Chemical symbol for selenium

26. Greek letter used for coefficient of reflection (pl.)

27. World's 1st fully electronic digital computer (abbr.)

29. Type of flip-flop

32. Radio Amateurs of Canada (abbr.)

34. Prefix meaning temperature-related

36. Causing a voltage or current waveform to gradually die out

37. Regarding light

39. Chemical symbol for argon

42. System On Chip

43. Verified proper functionality of a product

44. Pass-Fail ________, defining limits for acceptance test

47. Unit of inductance (abbr.)

48. 36 inches

51. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)

53. Government program to bring electricity to farms (abbr.)

54. Placed a blocking template over a PCB layout

56. PCB mask exposing ray (abbr.)

59. Peak Inverse Voltage

61. Glass device used for focusing light

63. U.S. Spectrum allocation agency

65. Polish a crystal to an exact frequency

67. Chemical symbol for cobalt

70. Chemical symbol for iron


See solution below

 

2021 Crosswords Archive

Visit the Crossword Express website - RF CafeTake a well-deserved break and try your hand at some of these goodies. Every word in the RF Cafe crossword puzzles is specifically related to engineering, mathematics, and science. There are no generic backfill words like many other puzzles give you, so you'll never see a clue asking for the name of a movie star or a mountain on the Russia-China border.

All of these crossword puzzles were created using the fabulous Crossword Express (now called "Magnum Opus") software.

2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | Sudoku

December 26

December 19

December 12

December 5

November 28

November 21

November 14

November 7

October 31

October 24

October 17

October 10

October 3

September 26

September 19

September 12

September 5

August 29

August 22

August 15

August 8

August 1

July 25

July 18

July 11

July 4

June 27

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May 30

May 23

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May 2

April 25

April 18

April 11

April 4

March 28

March 21

March 14

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February 28

February 21

February 14

February 7

January 31

January 24

January 17

January 10

January 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Microwave Engineering Theme Crossword Puzzle Solution for March April 4th, 2021 - RF Cafe

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