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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

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

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