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RF Cafe Science & Engineering Crossword Puzzle
March 15, 2020

This March 15, 2020, tech-themed crossword puzzle contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc., which I have personally built over nearly two decades. Many new words and company names have been added that had not even been created when I started in the year 2002. 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 March 15, 2020 - RF Cafe 

<click for full size to print>

1. RF radiating structure

6. Soaks up RF energy

11. Airflow rate (abbr.)

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

13. General Packet Radio Service

16. CPS

17. Type of logic gate

19. Chemical symbol for scandium

20. Color quality

21. Divide a signal into into chunks for sampling

22. BASIC looping keyword

24. Cyanide (abbr.)

25. Government program to bring electricity to farms (abbr.)

27. 1.602E-19 Joules

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

31. Computer messaging service

32. Software device for tracking elapsed time (pl.)

35. Ethoxyethane

37. Chemical symbol for cesium

38. Ratio of white to black on a CRT

40. Opposite of O.D.

41. Unit of length (abbr.)

43. End of Life (abbr.)

45. Airport Surveillance Radar (abbr.)

47. Unit of volume (abbr.)

48. Equalizer (abbr.)

49. Gun safety and education organization (abbr.)

50. U.K. equivalent of the IEEE

51. 10E1 numerical prefix

52. Unlicensed FCC Part 95 realm for personal and business radio use (abbr.)

53. Battery manufacturer in Bethel, CT

58. 1/000 of an amp (abbr.)

60. Electronic assembly transport container (pl.)

62. Subject a circuit to extreme operation

63. One of four lines used in ferrite core memories

64. Total radiated power (abbr.)

65. Chemical symbol for chlorine

66. Low Noise Amplifier (abbr.)

67. Radio signals from the cosmos (abbr.)

69. Gallium nitride chemical symbol

71. Slang for helicopter

73. End of transmission (abbr.)

74. Intermodulation (abbr.)

76. Radio Direction Finding (abbr.)

78. Chemical symbol for copper

79. Asynchronous Digital Subscriber Line (abbr.)

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

81. Stock symbol for Advanced Micro Devices

82. Superior magnetic shielding material

83. Wire mesh wrapped around center conductor (pl.)

1. Scheme to maintain proper frequency (abbr.)

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

3. Exactly the same in mathematics

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

5. Feedback system used to maintain constant signal level (abbr.)

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

7. 3 GHz to 30 GHz

8. O3

9. Armored cable type

10. System On Chip

11. Chemical symbol for cesium

14. Pseudomorphic high-electron-mobility transistor, abbr.

15. A Ham station that operates from several grid squares or counties during a contest

18. Chemical symbol for radon

20. He gave his name to the uncertainty principle

23. Time to spend your 401k plan

25. Radio Amateurs of Canada (abbr.)

26. Permeability-tuned oscillator (abbr.)

28. Satellite TV system

30. Amplifier linearity specification (abbr.)

31. The "E" in FET

33. Mate a plug to a jack

34. Useful distance between Tx and Rx (pl.)

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

38. Encased in a protective covering

39. Loose end of a cable

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

44. Type of logic gate

46. Chemical symbol for selenium

47. Chemical symbol for cadmium

52. Logic gate output configuration (abbr.)

54. Country of RF Cafe's residency

55. Emitted a flash during electrical discharge

56. Wireless phone regions

57. Opposite of USB

59. Automatic network analyzer (abbr.)

61. Satellite milieu

63. Rise over run, 1st derivative

67. Chemical symbol for erbium

68. Time Division Multiplexing

70. Mate to a bolt

71. The computer in 2001: A Space Odyssey

72. Precision landing system (abbr.)

73. Voltage-current phase mnemonic

74. International Microwave Symposium (abbr.)

75. Chemical symbol for mendelevium

77. Upper frequency (abbr.)

81. Analog-to-Digital (abbr.)

See solution below


2020 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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