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RF Cafe Engineering & Science Crossword Puzzle
November 17, 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 17, 2019, puzzle uses a database of thousands of words 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 17, 2019 - RF Cafe 

<click for full size to print>

2. Robert ______-Watt, "Father of Radar"

5. The UK's equivalent of the FCC

8. ______ velocity - speed necessary to become free of the Earth's gravitational force

13. Digital storage oscilloscope (abbr.)

15. A measure of receiver quality (abbr.)

16. Discipline for aircraft navigation in low visibility environments (abbr.)

18. Below ELF

21. Slang for when a professor hints at an exam problem (abbr.)

22. Radio frequency interference (abbr.)

24. Morse Code for "from"

25. Unit of inductance (abbr.)

27. Thin layer of material deposited a surface

29. Personal Digital Cellular

31. Unit of length equal to 5.5 yards (pl.)

33. Part of this website's title

35. Mate to a TX

36. Its chemical symbol is Fe

38. Unit of time (abbr.)

39. Aircraft tracking system

41. Chemical symbol for beryllium

42. Part of this website's title

44. Radio Amateurs of Canada (abbr.)

45. Effective frontal area presented to a microwave interrogation system (abbr.)

46. Greek letter

47. Numerical basis for decibels (abbr.)

48. Precision approach radar (abbr.)

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

50. Fail-____ switch

53. Unit of capacitance (abbr.)

55. Family of ICs with a certain component density level (abbr.)

56. Chemical symbol for polonium

57. Complex Instruction Set Computer

60. Chemical symbol for tantalum

61. Contains imperfections in a crystal lattice

62. Mr. Pascal's first name

63. Chemical symbol for copper

64. Temperature-compensated crystal oscillator (abbr.)

66. Army-Navy specification prefix

67. Type of digital filter (abbr.)

68. Chemical symbol for nickel

69. Electric enclosure standard organization (abbr.)

71. Virtual Private Network

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

73. High Data Rate

75. Circuit for maintaining constant voltage (abbr.)

77. Telex-Over-Radio (abbr.)

78. Unit of frequency

80. Mr. Gauss' first name

83. Opposite of I.D.

85. Brand of hobby knife

87. Chemical symbol for iron

88. Ad-hoc on demand distance vector (abbr.)

91. Chemical symbol for strontium

93. Front edge of a wing (abbr.)

94. Amateur Radio Direction Finding (abbr.)

96. Software engineering tool (abbr.)

97. Most frequently occurring number in a series of numbers

99. Home state of Los Alamos lab (abbr.)

100. Filter type that blocks lower frequencies (abbr.)

101. FCC Part 15 rules apply in this band (abbr.)

103. European equivalent to the U.L.

104. Half of DSB

106. Specialized mobile radio (abbr.)

107. Chemical symbol for gallium

109. Transmit Incremental Tuning (abbr.)

110. Apollo 11 astronaut Buzz ______

111. The gaseous state of water

112. International phonetic alphabet letter "Y"

1. Summer

2. Write-Once (abbr.)

3. Chemical symbol for tin

4. Switch position

5. Type of logic gate

6. Computer Assisted Design and Development

7. 1E6 nanoseconds

9. Official Space Shuttle designation (abbr.)

10. "Calling any amateur radio station"

11. Chemical symbol for erbium

12. A circuit that takes two or more input signals, and produces an output that includes the sum and difference of those signal frequencies

14. Chemical symbol for selenium

16. Precision landing system (abbr.)

17. Type of modulation (abbr.)

19. Chemical symbol for lawrencium

20. Wireless transmitting device that opens a car door remotely

23. Chemical symbol for francium

25. Chemical symbol for praseodymium

26. Chemical symbol for holmium

28. A material which is a poor conductor of heat or electricity

29. English theoretical physicist who created the delta function now named after him

30. Adjust to meet a specification

32. Left a film on the surface

33. Chemical symbol for radium

34. Small unit of capacitance (abbr.)

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

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

39. Chemical symbol for radium

40. Read-only (abbr.)

42. Error checking scheme (abbr.)

43. A keyboard key

51. System for guiding aircraft (abbr.)

52. Facsimile

54. Cooling device

56. Part of a male connector

58. Current-voltage phase mnemonic

59. Add two or more inputs

64. RF connector type

65. Lubricant

69. Gun safety and education organization (abbr.)

70. Amateur radio operating mode for sharing realtime video (abbr.)

71. "RF Stencils for _____," created by RF Cafe for block diagram, circuit, and system conceptual drawings

74. Ham abbreviation for "distant station"

76. Local Oscillator (abbr.)

79. Numerical prefix for 10E-26

81. Chemical symbol for aluminum

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

84. Direct Digital Synthesis (abbr.)

86. RF ____, the world's best engineering website

87. BASIC looping keyword

89. Switch position

90. Decimeter (abbr.)

92. Type of flip-flop

94. Anatech Electronics Inc., (abbr.)

95. Start frequency (abbr.)

97. Unit of length (abbr.)

98. Enhanced Graphics Adapter

100. Opposite of a LO

102. 1/000 of an amp (abbr.)

103. Chemical symbol for chromium

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

106. Type of component package (abbr.)

108. Army-Navy specification prefix

109. Chemical symbol for xenon 

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.

2024 | 2023 |2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | Sudoku


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 Puzzle Solution November 17, 2019 - RF Cafe 

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