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RF Cafe Engineering & Science Crossword Puzzle
December 23, 2018

Each week, for the sake of all avid cruciverbalists amongst us, I create a new technology-themed crossword puzzle using only words from my custom-created lexicon related to engineering, science, mathematics, chemistry, physics, astronomy, etc. This week's puzzle contains a special holiday message (colored clues) to all RF Cafe visitors. You will never find among the words names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort. You might, however, see someone or something in the exclusion list who or that is directly related to this puzzle's theme, such as Hedy Lamarr or the Bikini Atoll, respectively. Enjoy!

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs crosswords.

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

RF Cafe Engineering & Science Crossword Puzzle December 23, 2018

1. Electrical safety organization (abbr.)

3. Lowest ranges of system frequencies

9. Chemical symbol for chromium

11. Point of rotation

12. The largest asteroid

13. ___/IP scheme for networked connectivity

16. File name extension for an ASCII file

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

18. Boolean expression (pl.)

20. A common battery cell size

21. Switch position

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

25. Chemical symbol for radon

26. Internet protocol (abbr.)

27. What kind of a number is divisible only by itself and 1

29. Negatively doped silicon

31. Stock symbol for Yahoo

34. _____ + 79 Across and a 17 Down + 22 Down + 30 Down from RF Cafe!

36. PCB metal area where component leads attach

38. Low- to mid- frequency RF connector

39. Base Station Transceivers (abbr.)

40. Effective Radiated Power (abbr.)

41. PC follower

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

43. Chemical symbol for scandium

45. 1e-6 mA

47. 1/000 of an amp (abbr.)

48. Logarithmic ratio (abbr.)

50. Control language used by Hewlett Packard printers, abbr.

52. Things in a bill of material

54. Service-Independent Building Blocks

56. Electromagnetic (abbr.)

57. Chemical symbol for cesium

58. Test point (abbr.)

60. Greek letter

62. Local Oscillator (abbr.)

63. Amateur radio abbreviation for the Oceania region (abbr.)

65. Charged particle

67. International phonetic alphabet letter "U"

70. The cell band above DCN

72. Type of logic gate

73. Network department (abbr.)

74. Chemical symbol for niobium

75. Multifunctional silicon devices (abbr.)

76. Galilean moon

78. Unit of time (abbr.)
79. 34 Across + _________ and a 17 Down + 22 Down + 30 Down from RF Cafe!

84. Chemical symbol for platinum

85. Chemical symbol for erbium

86. Switch position

87. Chemical symbol for mercury

89. One port of an amplifier

90. Army-Navy specification prefix

92. The "O" in VCO (pl.)

93. Shorthand for telecommunications

97. High temperature substrate

101. Ovenized crystal oscillator (abbr.)

102. Agilent's EE design software (abbr.)

103. Time delay (abbr.)

104. Ratio of circumference to diameter

1. One type of electron spin

2. Described by a 1st-order equation

3. Opposite of top

4. System for guiding aircraft (abbr.)

5. Electromagnetic (abbr.)

6. Chemical symbol for silver

7. Cellphone band just below PCS

8. A trigonometry function that is the reciprocal of the cosine

9. Ceramic Dual Inline Package

10. Type of flip-flop

14. Min-to-max voltage of a waveform (abbr.)

15. Automatic network analyzer (abbr.)

16. Chemical symbol for aluminum

17. 34 Across + 79 Across and a _____ + 22 Down + 30 Down from RF Cafe!

19. The scalar component of velocity

22. 34 Across + 79 Across and a 17 Down + ___ + 30 Down from RF Cafe!

23. Moon of Saturn with retrograde orbit

24. Causes circuit path with very low or 0 ohms of impedance

25. Rádio Nacional de Angola (abbr.)

28. Its chemical symbol is Fe
30. 34 Across + 79 Across and a 17 Down + 22 Down + ____ from RF Cafe!

32. Heterojunction Bipolar Transistor

33. Number system which uses only the digits 0 to 7

35. Type of flip-flop

36. Has a positive phase wrt a reference

37. Silicon transistor type (abbr.)

41. Maximum distance in orbit around the sun

42. Inventor of the incandescent light bulb

44. The star Alpha Geminorum

46. Surrounding environmental conditions

47. Chemical symbol for magnesium

49. Chemical symbol for bismuth

51. Related to FM by a differential

53. Chemical symbol for einsteinium

55. Armored cable type

57. Torque transfer mechanism

59. PC Card - with 68 pin interface

61. Chemical symbol for tin

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

66. Path followed by a heavenly body around a star

68. Band between RF and BB

69. Unix, Linux or Windows (abbr.)

71. Connector vendor

75. Small representative graphics

77. International phonetic alphabet letter "O"

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

81. Infrared (abbr.)

82. Part of a FOR loop

83. Chemical symbol for manganese

84. Rotated about a point

88. "The father of rocketry"

89. Satellite of Jupiter discovered by Galileo

91. Unit of time (abbr.)

94. End of transmission (abbr.)

95. Imaging device (abbr.)

96. Shorthand for oxygen

98. Chemical symbol for lanthanum

99. User Datagram Protocol

100. Degree of IC sophistication (abbr.)

See solution below


2018 Crosswords 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.

December 30

December 23

December 16

December 9

December 2

November 18

August 5

July 29

July 22

July 15

July 8

July 1

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May 13

May 6

April 29

April 22

April 15

April 8

April 1

March 25

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February 11

February 4

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January 21

January 14

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RF Cafe Engineering & Science Crossword Solution December 23, 2018

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