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RF Cafe Christmas Theme Crossword Puzzle
December 20, 2020

Just in time for Christmas - a yuletide crossword puzzle for you to work in the last moments of work while waiting for the boss to give the order to leave early for the long holiday weekend. 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. The clues with asterisks (*) are particular to this December 20th Christmas-themed crossword puzzle. As always, it 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

RF Cafe Christmas Theme Crossword Puzzle for December 20, 2020 - RF Cafe

ACROSS DOWN
1. Logarithmic ratio (abbr.)
3. The theme of this crossword puzzle *
9. Chemical symbol for radium
11. One axis of an ellipse
12. The stuff in the solder core
13. Broadband Signal Intrusion (abbr.)
16. Type of data conversion device (abbr.)
17. Erbium Doped Fiber Amplifier (abbr.)
18. Transformer interwinding connections
20. Chemical symbol for lithium
21. Filter type that blocks upper frequencies (abbr.)
23. Logic family (abbr.)
25. Chemical symbol for cobalt
26. Chemical symbol for lanthanum
27. Third largest asteroid
29. Color of most of the main object in this crossword matrix *
31. Transportation used by 19 Down *
34. High-speed circuit-switched data (abbr.)
36. Length times width
38. Abbreviation for "power"
39. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)
40. Stock symbol for National Semiconductor
41. Part of this website's title
42. 1/000th of a liter (abbr.)
43. Chemical symbol for scandium
45. Internet protocol (abbr.)
47. A measure of receiver quality (abbr.)
48. Chemical symbol for erbium
50. A three-terminal power semiconductor device noted for high efficiency and fast switching (abbr.)
52. Holiday songs sung by 84 Down *
54. A crescent shaped figure formed on a sphere or plane by two intersecting arcs
56. Chemical symbol for neodymium
57. Chemical symbol for silver
58. Infrared (abbr.)
60. Network department (abbr.)
62. Front edge of a wing (abbr.)
63. 1e-6 mA
65. End of transmission (abbr.)
67. Type of ground strap wire
70. Engineering Change Notice (abbr.)
72. Electromagnetic (abbr.)
73. Network department (abbr.)
74. One component of a complex number (abbr.)
75. Analog-to-Digital (abbr.)
76. 10^-18th of a joule (abbr.)
78. Unit of time (abbr.)
79. Address of 17 and 19 Down (2 wds.) *
84. Chemical symbol for calcium
85. Chemical symbol for neon
86. Chemical symbol for tin
87. Chemical symbol for mercury
89. Chemical symbol for argon
90. Unit of time (abbr.)
92. Property of a lens that allows it to focus all wavelengths to the same point
93. Adding a termination
97. High temperature substrate
101. Graphics file extension
102. Greek letter
103. Opposite of O.D.
104. Upper frequency (abbr.)
1. Decimeter (abbr.)
2. Spurious signal produced in a receiver
3. Its chemical symbol is Co
4. Stock symbol for Harris Communications
5. One port of an amplifier
6. Test point (abbr.)
7. Amateur Radio Association (abbr.)
8. The plane figure enclosed by two radii of a circle and the arc between them
9. Periodic superimposed waveform amplitude variation
10. Army-Navy specification prefix
14. Galilean moon
15. Semiconductor device type (abbr.)
16. Decibel (abbr.)
17. Helpers of 19 Down *
19. Jolly old St. Nick *
22. Attenuator
23. Silvery slivers hung on the 3 Across tree *
24. Signal amplitude degradation due to inefficiency (pl.)
25. Early computer display screen resolution (abbr.)
28. Term for asymmetry of a statistical distribution
30. CB slang for CB radio or antenna
32. Filter type that blocks upper frequencies (abbr.)
33. Change from the initial value due to instability
35. Centimeter (abbr.)
36. Heavenly being that announced the birth of 77 Down *
37. Electromagnetic interference (abbr.)
41. Propulsion unit for 19 Down's 31 Across *
42. Delivery room for 77 Down *
44. Trigonometric function equal to the ratio between the side adjacent to a given angle, and the hypotenuse
46. Objects of endearment placed under the 3 Across tree *
47. Chemical symbol for niobium
49. Chemical symbol for ruthenium
51. Chemical symbol for gadolinium
53. 1.602E-19 Joules
55. Chemical symbol for nickel
57. Fraction of incident light or radiation reflected by a surface or body
59. Line extending out from center
61. Radio signals from the cosmos (abbr.)
64. Chemical symbol for selenium
66. Greek letter used for resistance
68. Chemical symbol for silver
69. Morse Code for "from"
71. Connector vendor
75. Association of North American Radio Clubs
77. He is the reason for the season *
80. Chemical symbol for radon
81. Test equipment (abbr.)
82. Unit of time (abbr.)
83. Switch position
84. A roaming person who sings 52 Across *
88. Shiny strings of 23 Down strung across the fireplace mantel *
89. A common battery cell size
91. Type of component package (abbr.)
94. Antenna gain unit (abbr.)
95. Intermodulation distortion (abbr.)
96. Chemical symbol for neptunium
98. Chemical symbol for lawrencium
99. 300 MHz to 3 GHz
100. Minutes of Use (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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RF Cafe Christmas Theme Crossword Solution for December 20, 2020 - RF Cafe

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Berkeley Nucleonics Academy - RF Cafe
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