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RF Cafe Engineering & Science Crossword Puzzle
January 26, 2020

As with my hundreds of previous engineering and science-themed crossword puzzles, this one for January 26, 2020, contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc., which I have built up 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 January 26, 2020 - RF Cafe 

<click for full size to print>

1. U.S. military research & development agency (abbr.)

5. Color #5

10. __ + 35 Down + Workbook, RF Cafe's excellent Excel-based cascaded component system-level calculator

11. Amateur Radio Association (abbr.)

13. Galilean moon

16. Waveform limit definition

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

19. Teflon (abbr.)

20. Abbreviation for acknowledge (also a common word used by Bill the Cat)

21. The "D" in RFID

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

25. Chemical symbol for nobelium

26. Positive voltage lead color

27. Logic family

29. Chemical symbol for silicon

30. Type of data conversion device (abbr.)

31. Chemical symbol for lithium

33. Original Equipment Manufacturer (abbr.)

35. Type of microwave oscillator

38. Chemical symbol for tantalum

40. Gasoline, diesel, etc.

42. Boolean expression (pl.)

43. Armored cable type

45. Reserves for

47. Temporary Engineering Change document (abbr.)

49. 1.602E-19 Joules

50. Unit of weight

51. Chemical symbol for cesium

53. Logarithmic unit of power (abbr.)

55. The cell band above DCN

56. __ + 63 Down, this website's title

58. Conductor size unit (abbr.)

60. Describes energy at rest

63. Software drafting tool (abbr.)

64. Cause a voltage or current waveform to gradually die out

66. SIP x 2

67. Mate to a plug

68. Type of reconfigurable memory (abbr., pl.)

71. Attenuator

73. Chemical symbol for iron

74. Satellite milieu

75. Force required to impart an acceleration of one centimeter per second per second to a mass of one gram (pl.)

1. Constellation : The dragon

2. Audio Frequency Shift Keying (abbr.)

3. Last stage in a transmitter (abbr.)

4. Emitted a flash during electrical discharge

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

7. Chemical symbol for europium

8. Effective Radiated Power (abbr.)

9. Logical negation (pl.)

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

14. Circuit for firing a radar magnetron (abbr., pl.)

15. Archaic term for an outdoor antenna (pl.)

16. ELI the ICE ___

18. Chemical symbol for silicon

21. Digital Enhanced Cordless Telephone

22. Chemical symbol for calcium

23. Engineering Change Order (abbr.)

26. ______ cosine filter

28. High-temp wire insulation

30. This calculus operation yields current through an inductor

32. Network department (abbr.)

34. Elementary particle

35. 10 Across + _______ + Workbook, RF Cafe's excellent Excel-based cascaded component system-level calculator

36. Army-Navy specification prefix

37. Chemical symbol for ytterbium

39. A common battery cell size

41. Radio signals from the cosmos (abbr.)

44. Chemical symbol for xenon

46. Type of high frequency circuit substrate (abbr.)

48. Unlicensed radio type for personal and business use (abbr., pl.)

52. ____ Meet, a Ham's flea market

54. Weight (abbr.)

55. Attenuator configuration (hyph.)

56. Radio Amateur Civil Emergency Service (abbr.)

57. Electronics components & batteries supplier based in Japan

59. General Mobile Radio Service (abbr.)

61. Analog-to-Digital (abbr.)

62. End of soldering iron

63. 56 Across + ____, the world's best engineering website

65. Type of e-mail address system (abbr.)

69. 1/000 of an amp (abbr.)

70. Chemical symbol for scandium

72. Chemical symbol for dysprosium

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.

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Engineering & Science Crossword Solution January 26, 2020 - RF Cafe

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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