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Pearl Harbor Day Crossword Puzzle
December 7, 2020

For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. This December 7th Pearl Harbor Day crossword puzzle has a few words and clues relating to the surprise attack in 1941 (labeled with a asterisk *). As always, the crossword contains no names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort unless it/he/she is related to this puzzle's technology theme (e.g., Hedy Lamarr or the Bikini Atoll). The technically inclined cruciverbalists amongst us will appreciate the effort. Enjoy!

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

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

Pearl Harbor Day Crossword Puzzle for December 7, 2020 - RF Cafe

1. Location of air attack (2 wds.)*

8. Aircraft tracking system which first detected the air attack (but was ignored)*

12. Conflict into which this attack drew the USA (2 wds. + numeral)*

20. Chemical symbol for radon

21. Chemical symbol for molybdenum

22. Chemical symbol for lawrencium

23. Colorado Springs military school (abbr.)

24. Akin to EEs, CEs, AEs, etc. (abbr., pl.)

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

27. Opposite of I.D.

28. Chemical symbol for dysprosium

30. Type of high frequency diode (abbr.)

33. A common battery cell size

35. Chemical symbol for strontium

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

39. Low Noise Amplifier (abbr.)

42. CB slang for police speed radar

45. Start frequency (abbr.)

46. Stock symbol for Intel

47. Chemical symbol for erbium

48. Early computer display screen resolution (abbr.)

50. Infrared (abbr.)

51. Automatic Packet Position Reporting System (abbr.)

53. Filter type that blocks frequencies in a specified band (abbr.)

54. Last stage in a transmitter (abbr.)

56. Circuit for firing a radar magnetron (abbr.)

57. Extremely high strength fiber used in explosion-proof enclosures & bullet-proof vests

60. High power density battery chemistry (abbr.)

63. Intermodulation distortion (abbr.)

65. Chemical symbol for calcium

67. ______ + 72 Across, country attacked by 122 Across*

68. Electronics manufacturer with "meatball" logo

69. Chemical symbol for neon

70. Multifunctional silicon devices (abbr.)

71. Chemical symbol for gallium

72. 67 Across + ______, country attacked by 122 Across*

73. Chemical symbol for neon

74. Online service

76. A radio operator's name

78. Mr. Westinghouse's first name

81. Lubricant

83. 1.602E-19 Joules

84. S12 or S21 (abbr.)

87. Branch of service stationed at 1 Across*

89. Semiconductor and calculator company (abbr.)

90. Circuit for firing a radar magnetron (abbr.)

92. A common battery cell size

93. Hub of the solar system (pl.)

96. Chemical symbol for platinum

97. Release volatile products from a liquid coating such as paint

101. Positive voltage lead color

102. Chemical symbol for helium

103. 1/100 meter (abbr.)

104. Large unit of apparent power (abbr.)

105. Island chain where 79 Down is located*

108. 3 MHz to 30 MHz

109. Akin to an EE, CE, AE, etc.

111. Chemical symbol for rhodium

113. Miniature RF connector

116. Minutes of Use (abbr.)

118. Chemical symbol for bismuth

119. Opposite of O.D.

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

121. Ham slang to telephone lines (2 wds.)

122. Country which attacked 67 Across + 72 Across*

123. Width vs. length of a computer display

2. Effective Radiated Power (abbr.)

3. Automatic network analyzer (abbr.)

4. Stock symbol for Lockheed Martin

5. Chemical symbol for holmium

6. Color code for the number 0

7. Type of logic gate

8. Part of this website's title

9. A common battery cell size

10. Modulation type (abbr.)

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

13. Type of logic gate

14. Electro-mechanical switching device

15. Write-Once (abbr.)

16. Type of data conversion device (abbr.)

17. Time Division Multiplexing

18. 3-phase transformer configuration

19. Method other than ion implantation to drive dopants into base semiconductor

23. Ham radio organization (abbr.)

25. Describes when a synchronous motor loses phase lock

29. Spurious signal

31. 1E6 nanoseconds

32. Test equipment (abbr.)

33. Ring shaped

34. PC follower

35. December _______, nineteen hundred and forty-one, "A date which will live in infamy."*

36. Chemical symbol for mercury

38. Write software

40. Chemical symbol for neptunium

41. USS _______, battleship sunk and preserved as a memorial at 1 Across*

43. Chemical symbol for silver

44. Chemical symbol for rubidium

46. Band between RF and BB

48. Slow flow of metal when under high temperature or great pressure

49. Adjust or tune a circuit

52. Type of component package (abbr.)

54. Part of a male connector

55. Automated Test Equipment (abbr.)

56. BlackBerry or Palm for example (abbr.)

58. Enhanced Graphics Adapter

59. Circuit that reduces interference (abbr.)

61. Current-voltage phase mnemonic

62. Be behind in phase

64. Type of high speed Internet service (abbr.)

65. Software engineering tool (abbr.)

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

75. Switch position

76. Constellation : The water snake

77. Thread cutting tools

79. Island where 1 Across is located*

80. Sporadic E-layer ionospheric propagation (hyph.)

82. Network department (abbr.)

85. Chemical symbol for lutetium

86. Chemical symbol for tantalum

88. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)

91. Small unit of capacitance (abbr.)

94. PCB mask exposing ray (abbr.)

95. Chemical symbol for radium

96. Ratio of circumference to diameter

98. Code for a type of electrical wire insulation (abbr.)

99. Ground fault interrupter (abbr.)

100. Surface Mount Technology

105. High Data Rate

106. 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

107. Anatech Electronics Inc., (abbr.)

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

112. Opposite of a LO

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

115. Stock symbol for Boeing

116. 1/000 of an amp (abbr.)

117. Switch position

118. Filter type that blocks frequencies in a specified band (abbr.)

119. Network department (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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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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Pearl Harbor Day Crossword Puzzle Solution for December 7, 2020 - RF Cafe

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