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RF Cafe Engineering & Science Crossword Puzzle
November 24, 2019

For two decades, I have been creating custom engineering- and science-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. This November 24, 2019, puzzle has a holiday message for you. A database of thousands of words is used which I have 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. 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.

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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 November 24, 2019 - RF Cafe 

<click for full size to print>

1. Television Interference (abbr.)

4. Contactless homemade (usually) inductive and/or capacitive test cable end for tracing RF signals on a PCB or in a chassis (2 wds., pl.)

13. End of soldering iron

16. Common test for verifying high voltage tolerance w/o breakdown

17. Logic gate output configuration (abbr.)

18. Stock symbol for Harris Communications

19. Hiram _____ Maxim, founder of the ARRL

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

21. Type of flip-flop

22. Number which is divisible only by itself and 1

25. Chemical symbol for lanthanum

26. Type of logic gate

27. Chemical symbol for neon

28. 1e-6 mA

29. 2-way conversation, Ham term

30. A common battery cell size

32. Centimeter (abbr.)

34. Chemical symbol for nobelium

35. The "D" in RFID (pl.)

37. Common gateway interface (abbr.)

39. Russian space probes which visited Halley's comet

41. 3 GHz to 30 GHz

43. Image file format name extension

45. Name for resistor placed at power supply output to bleed off residual capacitor charge

47. "Texting" (abbr.)

48. Type of chart

50. Ground fault interrupter (abbr.)

51. Filter type (abbr.)

52. 10E-2 numerical prefix

53. Newest buzz phrase for ubiquitous remote control and monitoring of everything (abbr.)

54. Miniature RF connector

55. Commercial Off-the-Shelf

58. Low Noise Amplifier (abbr.)

60. Fail-____ switch

62. Unit of apparent power (abbr.)

64. Unit of time (abbr.)

65. Keyboard key

67. Charged particle

69. Coefficient of temperature (abbr.)

70. Chemical symbol for tin

71. Multifunctional silicon devices (abbr., pl.)

73. Chemical symbol for lawrencium

74. A type of average (pl.)

76. Chemical symbol for lithium

77. Voltage-current phase mnemonic

78. Fuel additive

79. Key feature in a high level overvoltage protection device

81. Base 16 number system (abbr.)

84. Describes a region on a semiconductor that has a linear and symmetric I-V curve

85. One state of matter

86. What is the natural conversion of one element into another by radioactive decay

87. Hz

1. Happy ____________ Day!

2. Tool for holding parts while working on them

3. Innovative Power Products, Holbrook, NY (abbr.)

4. Type of screwdriver head (2 wds.)

5. Multifunctional silicon devices (abbr.)

6. Unit of length (abbr.)

7. Sends a file over a network (abbr.)

8. Radio frequency interference (abbr.)

9. Moon of Saturn discovered in 1672

10. Type of logic gate

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

12. Amateur radio station located more than 50 km above Earth's surface (2 wds.)

13. Ham abbreviation for transceiver

14. Small representative graphic

15. Explosive devices

23. Type of rock salt crystal used in radio

24. Keep in working condition

28. A measure of receiver quality (abbr.)

29. Type of matrix barcode used with laser scanning(abbr.)

31. A common battery cell size

33. Chemical symbol for magnesium

35. RF integrated circuit (abbr.)

36. SIP x 2 (pl.)

38. Type of microwave diode

39. Vertical Metal Oxide Semiconductor

40. Nearest and furthest points to the center of gravitational attraction for a body in orbit

42. 3 MHz to 30 MHz

44. Small unit of capacitance (abbr.)

45. Chemical symbol for scandium

46. Semiconductor and calculator company (abbr.)

47. Chemical symbol for silicon

49. Intermodulation (abbr.)

56. Switch position

57. Chemical symbol for mendelevium

59. Chemical symbol for radon

61. A BPF specification (abbr.)

63. Asynchronous Communication Interface Adapter (abbr.)

66. Nuclear explosion byproduct harmful to electronic (abbr., pl.)

68. Workplace safety group (abbr.)

70. Describes when a synchronous motor loses phase lock

72. Official Space Shuttle designation (abbr.)

75. Arithmetic Logic Unit (abbr.)

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

79. Chemical symbol for gallium

80. Army-Navy specification prefix

82. Radio signals from the cosmos (abbr.)

83. Greek letter

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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Engineering & Science Crossword Solution November 24, 2019 - RF Cafe

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