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RF Cafe Engineering & Science Crossword Puzzle
July 21, 2019

Unlike all of the other engineering and science-themed crossword puzzles I have ever seen, every word and clue - without exception - in these RF Cafe puzzles has been personally entered into a very large database of relevant terms. The list has been built over nearly two decades of creating these crossword puzzles. Let me know if you would like a custom crossword puzzle built for your company, school, club, etc. (no charge). These custom-made engineering and science-themed crossword puzzles are done weekly for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc.

cruciverbalist: [noun] cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs or works crosswords.

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

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

Engineering & Science Crossword Puzzle July 21, 2019 - RF Cafe

1. The "F" in CFL bulbs

2. One component of a complex number (abbr.)

3. Exactly the same in mathematics

4. Switch position

5. Chemical symbol for tantalum

6. Stock symbol for Linear Technologies

9. Early instrument for measuring the positions of the heavenly bodies

11. Unit of time (abbr.)

15. Chemical symbol for mercury

16. Logarithmic reflectivity unit

17. Stock symbol for Boeing

19. Type of logic gate (pl.)

20. 1,000 seconds (abbr.)

22. Test point (abbr.)

24. 10E1 numerical prefix

26. A common battery cell size

27. ELI the ICE ___

28. Using air pressure as power

29. Type of data conversion device (abbr., pl.)

32. JavaScript (abbr.)

34. Chemical symbol for selenium

36. PhD

38. Chemical symbol for antimony

40. Unit of weight

43. Greek letter

45. Time delay (abbr.)

46. Science of assuring operation amid dense EM background noise (abbr.)

48. What is the measure of heat intensity called

49. An area of poor radio communication, too distant for ground wave and too close for sky waves (2 wds., pl.)

50. Weight (abbr.)

51. European Telecommunications Standards Institute (abbr.)

53. Chemical symbol for arsenic

55. Unit of capacitance (abbr.)

57. Deutsche Industrie Normenausschuss

62. Read-only (abbr.)

63. Chemical symbol for palladium

64. A common battery cell size

65. Type of current

67. Chemical symbol for erbium

68. Modulation technique (abbr.)

72. Small unit of capacitance (abbr.)

73. Crystal face

74. Chemical symbol for europium

75. Length times width

78. Chemical symbol for lawrencium

82. Greek letter (micro)

83. Chemical symbol for gold

85. Chemical symbol for europium

1. Slang for an electronic 86 Across (2 wds.)

7. Equalizer (abbr.)

8. 1e-6 mA

10. One type of electron spin

12. Unit of time (abbr.)

13. Units of heat

14. Workplace safety group (abbr.)

16. Logarithmic ratio (abbr.)

18. The "G" in GPS

20. Chemical symbol for krypton

21. Radio signals from the cosmos (abbr.)

23. Return-to-Zero (abbr.)

24. Digital storage oscilloscope (abbr.)

25. Send junk e-mail

28. BlackBerry or Palm for example (abbr.)

30. A common battery cell size

31. Rádio Nacional de Angola (abbr.)

32. Intel x86 command for " jump if above"

33. Chemical symbol for einsteinium

35. Chemical symbol for neodymium

37. Exalted-Carrier Single Sideband (abbr.)

39. On-the-air meeting of hams at a set time, day and radio frequency

41. Popular computer device interface (abbr.)

42. Optical cross-connect (abbr.)

44. Type of aircraft dope

47. Time Division Multiplexing

50. BER, 8 bits at a time

52. Software engineering tool (abbr.)

54. Runge-_____ method in differential equations

56. Chemical symbol for cadmium

58. Type of component package (abbr.)

59. Band between RF and BB

60. Official Space Shuttle designation (abbr.)

61. Infrared (abbr.)

63. Type of chart

64. Positive electrode

66. One system's phonetic letter "z"

68. Last stage in a transmitter (abbr.)

69. Chemical symbol for chromium

70. Type of logic gate

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

76. Type of modulation (abbr.)

77. Automated universal inductance tester - watch that 3rd letter, (abbr.)

79. Antenna radiated power measurement (abbr.)

80. Chemical symbol for scandium

81. Chemical symbol for ruthenium

82. 1/000 of an amp (abbr.)

84. BS__ - the degree held by many RF Cafe visitors

86. The Brits call it a valve (2 wds.)

See solution below

2019 Crossword Puzzle Archive

Take 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.

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RF Cafe Engineering & Science Crossword Puzzle July 21, 2019

RF Cafe Engineering & Science Crossword Puzzle
July 21, 2019