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RF Cafe Engineering & Science Crossword Puzzle
March 24, 2019

Since 2000, I have been creating custom technology-themed crossword puzzles 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. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

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

RF Cafe Engineering & Science Crossword Puzzle March 24, 2019

1. High electron mobility transistor

5. Common use for a capacitor

11. Voice of America

12. Resistive component of a capacitor's lumped element model (abbr.)

14. Battery cell chemistry type (abbr.)

16. Ham's code for "What is the name of your station?"

18. Chemical symbol for tantalum

19. Compliment to a zero in a polynomial

20. Typically 300 Hz to 5 kHz audio frequency (pl.)

23. The shortest-duration modulation state in a spread spectrum system

24. Make and break circuits

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

27. Aircraft navigation system (abbr.)

29. Continuous Tone Coded Squelch System (abbr.)

30. Chemical symbol for silicon

31. Semiconductor lamp

33. Filter type that blocks frequencies in a specified band (abbr.)

36. Fraction of incident light or radiation reflected by a surface or body

38. Type of logic gate

40. Unit of capacitance (abbr.)

41. Chemical symbol for plutonium

42. Chemical symbol for xenon

43. What is the study of objects travelling faster than sound

45. Chemical symbol for aluminum

46. Galilean moon

47. European equivalent to the U.L.

48. Unit of atmospheric pressure (abbr.)

49. One tier of a PCB (pl.)

51. Chemical symbol for einsteinium

52. Design for Manufacturability (abbr.)

53. Coefficient of temperature (abbr.)

55. Thin metallic shield material around coax cable (pl.)

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

61. BASIC program command

63. The most common conductor metal

64. European Telecommunications Standards Institute (abbr.)

65. X-ray film image (pl.)

67. Microwave Theory and Techniques Society (abbr.)

69. Type of current flow (abbr.)

70. Opposite of USB

71. Set of poles

72. Voltage-current phase mnemonic

75. 1/000 of an inch

77. Geometrical name for a three dimensional solid having eight plane faces

78. Official engineering change document (abbr., pl.)

2. 1.602E-19 Joules

3. Isolated charges

4. Loose end of a cable

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

7. Chemical symbol for cesium

8. Path followed by a heavenly body around a star (pl.)

9. Constellation : The lyre

10. Founder of the ARRL (2 wds.)

13. Meet all test requirements

15. Akin to an EE, CE, AE, etc.

16. Ham's code for "Does my frequency vary?"

17. Boolean expression (pl.)

18. Temporary Engineering Change document (abbr.)

19. Peak Inverse Voltage

20. Controlled impedance transmission line on a substrate (pl.)

21. Cellphone band just below PCS

22. Ratio of output to input power, voltage, current, light, etc.

24. Chemical symbol for scandium

25. Weight (abbr.)

28. Remove oxygen from or add hydrogen to a compound

32. Adds an impurity to a semiconductor

33. Assemble

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

35. Time duration of an energy signal (2 wds.)

37. Constellation : The lion

38. Gun safety and education organization (abbr.)

39. Type of memory

41. Precision approach radar (abbr.)

44. Equal about an axis

50. Web page language

54. Cause the temperature to drop

55. BASIC looping keyword

56. Configured a switch to break electrical contact

57. Front edge of a wing (abbr.)

58. Chemical symbol for strontium

60. A common RS-232 serial bus command (abbr.)

61. Equipment

62. Optical cross-connect (abbr.)

63. Mr. Piper's famous yellow airplane

66. Solid state power amplifier (abbr.)

67. 1/000 of an amp (abbr.)

68. Considered the 4th dimension

73. Chemical symbol for lawrencium

74. Satellite of Jupiter discovered by Galileo

76. Local Oscillator (abbr.)

See solution below


2019 Crossword Puzzle 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.

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A cruciverbalist is a person who is skilled at creating or solving crossword puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and "verbalist" from "verbal," indicating a person who deals with words. cruciverbalists are often responsible for designing crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and the techniques used in constructing and solving crosswords. They aim to make puzzles that are both challenging and enjoyable for crossword enthusiasts.

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RF Cafe Engineering & Science Crossword Solution March 24, 2019

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