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RF Cafe Engineering & Science Crossword Puzzle
June 16, 2019

Since 2000, 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. 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

Engineering & Science Crossword Puzzle June 16, 2019 - RF Cafe

<click for full size to print>

1. 1/000 of an inch

4. Numerical prefix for 10E2

8. Generalized Multiprotocol Label Switching (abbr.)

12. Stock symbol for Lockheed Martin

15. Cellphone band directly above DCS

17. Ham's code for "What is your location?"

18. Filter type (abbr.)

19. A common battery cell size

21. Chemical symbol for lutetium

23. Direct Memory Access (abbr.)

25. Measure of source / load mismatch (abbr.)

27. Volt-ohmmeter (abbr.)

28. Slang for transmitter and/or receiver

29. 1e-6 mA

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

32. System On Chip

34. Chemical symbol for nickel

35. Unix, Linux or Windows (abbr.)

36. Special diode type that can be switched (abbr.)

37. Type of logic gate

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

39. The "L" in VLF

41. Ground fault interrupter (abbr.)

42. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr., pl.)

43. Unit of liquid volume

45. Hz

46. Type of chart

48. In geometry, what is any quadrilateral in which the opposite sides and angles are equal

49. Rotor assembly contact for the brushes in an AC motor (2 wds.)

50. Maximum Usable Frequency

52. Fast Fourier transform (abbr.)

53. Abruptly limit the amplitude of a signal

56. Gun safety and education organization (abbr.)

58. Once around a circuit

59. Automatic Calibration System (abbr.)

62. Compliment to a pole in a transfer function

65. Charged particle

66. Filter type that blocks upper frequencies (abbr.)

67. Chemical symbol for copper

68. Chemical symbol for gadolinium

70. Miniature RF connector

72. Ham's code for "The net has traffic for you. Stand by."

73. Mate to an RX

74. Hub of the solar system

75. Ham abbreviation for transceiver

76. Online service

78. Test document for verifying proper function (abbr.)

80. Army-Navy specification prefix

81. Ham's code for "Take over as net control station."

82. Term used in soldering to achieve the condition that occurs when the metals being soldered are hot enough to melt the solder so it flows over the surface

83. Minutes of Use (abbr.)

85. User Datagram Protocol

87. Ham's code for "What is the correct time?"

88. Continuous Tone Coded Squelch System (abbr.)

89. Nikola _____

90. Stock symbol for Advanced Micro Devices

2. Internet protocol (abbr.)

3. Display type

5. Equalizer (abbr.)

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

7. Type of electrical wire insulation

9. Unit of admittance (pl.)

10. Parts per million (abbr.)

11. 30 kHz to 300 kHz

12. Be behind in phase

13. 1/000 of an amp (abbr.)

14. Form of energy involving the flow of electrons

16. "Texting" (abbr.)

19. Powers pneumatic devices

20. Circuit connection to a ground rod driven into the earth (2 wds.)

22. Country of RF Cafe's residency

24. Online service

26. Slang for transmitter and/or receiver (pl.)

27. Telephony over computer networks

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

29. Negation prefix

31. Part of this website's title

33. Chemical symbol for cobalt

36. Chemical symbol for selenium

37. Chemical symbol for nickel

40. Wideband CDMA

42. Third largest asteroid

44. Decibels above or below a dipole antenna (abbr.)

47. Filter type (abbr.)

51. Used to remove oxidation during soldering

52. Field Programmable Gate Array (abbr.)

54. Shorthand for liquid oxygen

55. One port of an amplifier

56. Silicon transistor type (abbr.)

57. Part of this website's title

60. Chemical symbol for cesium

61. Miniature threaded RF connector

63. Equalizer (abbr.)

64. Rádio Nacional de Angola (abbr.)

66. Cable termination type

67. Computer monitor (abbr., pl.)

69. Weatherproof cover for a radar antenna

71. Unit of heat

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

75. Temporary Engineering Change document (abbr.)

77. Line of Sight (abbr.)

79. BlackBerry or Palm for example (abbr.)

81. Unit of liquid measure (abbr.)

82. Weight (abbr.)

84. Electrical safety organization (abbr.)

86. Related to FM by a differential

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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