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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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RF Cafe Science & Engineering Crossword Puzzle
February 23, 2020

As with my hundreds of previous science and engineering-themed crossword puzzles, this one for February 23, 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 February 23, 2020 - RF Cafe 

<click for full size to print>

ACROSS DOWN
1. A type of capacitance or inductance

5. Describes a switch that is making electrical contact

10. Minutes of Use (abbr.)

11. Shorthand for telecommunications

14. One port of an amplifier

15. Material used in the center of an inductor coil

16. Greek letter

17. Electrical safety organization (abbr.)

18. Last stage in transmitter (abbr., pl.)

19. Part of this website's title

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

23. Form of energy arising from the kinetic energy of atoms and molecules

25. Propagation by means of ionospheric reflection

27. Angular speed unit

28. Ethoxyethane

30. 30 GHz to 300 GHz

32. Test equipment (abbr.)

34. Having power applied (slang)

35. S12 or S21 (abbr.)

36. Unit for 1,000,000 watt-seconds (abbr.)

38. Chemical symbol for ruthenium

40. Last keyword in a BASIC subroutine (pl.)

42. Antenna (abbr.)

44. The "As" in GaAs

45. European equivalent to the U.L.

47. Type of flip-flop

48. Chemical symbol for chlorine

49. An angle described by hypotenuse/opposite sides of a right triangle

51. Bulk Acoustic Wave

53. Last statement in a BASIC program

55. Battery vendor

57. Chemical symbol for lithium

58. Opposite of I.D.

59. Chemical symbol for strontium

60. Akin to dynamics, with no movement

61. Radio frequency interference (abbr.)

63. Thread cutting tools

65. Type of current

66. Decimeter (abbr.)

68. Chemical symbol for cesium

69. Service of the ARRL that helps hams solve technical problems (abbr.)

71. Chemical symbol for gallium

73. Digital storage oscilloscope (abbr.)

75. Having to do with charged particles

77. Current-voltage phase mnemonic

79. Stock symbol for Intel

81. A three-terminal power semiconductor device noted for high efficiency and fast switching (abbr.)

83. Transportation accident investigation agency (abbr.)

85. Chemical symbol for selenium

86. Hub of the solar system

87. Chemical symbol for arsenic

88. Switch position

90. Adjust

92. Mate to a TX

93. FORmula TRANslation

95. Unit of admittance

96. LCD display vendor

97. Reflected radar or sonar signal (pl.)

1. Type of chart used to plot immittance

2. Unit of weight

3. Chemical symbol for ruthenium

4. Elemental compound used for microwave frequency reference oscillators (abbr., pl.)

5. James _____ Maxwell; he united electricity and magnetism into the concept of the electro-magnetic field

6. Front edge of a wing (abbr.)

7. Ovenized crystal oscillator (abbr.)

8. Small DIP package (abbr.)

9. Electromagnetic (abbr.)

12. Chemical symbol for erbium

13. Helium, iron, silicon, and uranium, for example

15. Stream of electrons (pl.)

17. Ultra Fine Pitch Technology (abbr.)

18. Radio signal route

20. The "F" in EMF

22. Chemical symbol for argon

24. BS__ - the degree held by many RF Cafe visitors

25. Chemical symbol for strontium

26. Unit of inductance (abbr.)

29. Radio signals from the cosmos (abbr.)

31. Type of modulation (abbr.)

33. Follow a target on radar

35. Grows in amplitude

37. Intel x86 command for " jump if above"

39. Internet address (abbr.)

40. Electronics Industry Association (abbr.)

41. Society of Civil and Structural Engineers (abbr.)

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

46. Its chemical symbol is Es

50. Chemical symbol for neodymium

51. Stock symbol for Boeing

52. An 8-bit unit

54. The "D" in CD (pl.)

55. Radio Direction Finding (abbr.)

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

57. Display type

58. First edition of a book, white paper, app note, etc.

62. Opposite of O.D.

64. Small representative graphics

67. Chemical symbol for mendelevium

69. Part of a FOR loop

70. One bit of a real number

72. Advanced Communication Technologies and Services (abbr.)

74. Chemical symbol for silicon

75. Multifunctional silicon devices (abbr.)

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

78. Chemical symbol for einsteinium

80. Trans European Trunked RAdio

82. Temperature-compensated crystal oscillator (abbr., pl.)

84. Turn on the computer

86. Trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse

89. Gun safety and education organization (abbr.)

91. Chemical symbol for radium

92. Greek letter

93. Upper frequency (abbr.)

94. Chemical symbol for terbium

95. Unit of inductance (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.

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Engineering & Science Crossword Solution February 23, 2020 - RF Cafe

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