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Electronics Theme Crossword Puzzle
January 22nd, 2023

This week's crossword puzzle for January 22nd sports an electronics theme. Many of the words begin or end with the letter "K." Their clues have been marked with an asterisk (*). All RF Cafe crossword puzzles are custom made by me, Kirt Blattenberger, and have only words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. As always, this 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., Reginald Denny, Hedy Lamarr, or the Tunguska event in Siberia). 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

Electronics Theme Crossword Puzzle for January 22, 2023 - RF Cafe


1. He developed a law stating the sum of all currents into and out of a node is zero *
2. Electrical safety organization (abbr.)
3. Emitted a flash during electrical discharge
4. Chemical symbol for neon
5. Defense Advanced Research Projects Agency
6. Rechargeable battery type (abbr.)
7. 1.602E-19 Joules
8. Sets of 5 work days
9. Part of this website's title
10. Computer I/O device (pl.) *
15. Curly-Q type light bulb (abbr.)
18. Stock symbol for National Semiconductor
20. International phonetic alphabet letter "M"
22. Switch configuration (abbr.)
24. Asynchronous Digital Subscriber Line (abbr.)
25. The "B" in BER
26. Large unit of apparent power (abbr.) *
28. Opening for airflow
33. A popular spreadsheet
36. World's 1st fully electronic digital computer (abbr.)
39. Popular computer device interface (abbr.)
40. Send Morse Code *
41. Mathematical basis for calculating noise power for a given bandwidth and temperature (abbr.) *
43. FCC's Universal Licensing System (abbr.)
46. A type of filter designed using the image method *
47. A compiler directive
49. International Amateur Radio Union (abbr.)
50. Two or more satellites configured to communicate between themselves *
53. Waveform min to max specification (abbr.) *
54. Large unit of apparent power (abbr.) *
55. Below ELF
56. Computer monitor (abbr., pl.)
62. Broadband Signal Intrusion (abbr.)
64. Circuit element connecting PCB layers
66. Wideband Code Division Multiple Access
67. 2 GHz to 4 GHz
68. Its chemical symbol is Rn
69. Threaded fastener
74. Stock symbol for Boeing
76. Switch position
77. Front edge of a wing (abbr.)
78. Chemical symbol for strontium


1. 12.5 GHz to 18 GHz *
6. Parts distributor in Newark, NJ
11. S12 or S21 (abbr.)
12. The imaginary part of a complex quantity
13. Chemical symbol for iron
14. Certificate of Successful Completion of Examination (abbr.)
16. International phonetic alphabet letter "P"
17. Adjustment dial *
19. Frequency division multiple access (abbr.)
21. Type of spread spectrum that does not use frequency hopping (abbr.)
23. The computer in 2001: A Space Odyssey
25. Chemical symbol for berkelium
27. Very large unit of apparent power (abbr.)
29. Opposite of I.D.
30. Cutting instrument (pl.) *
31. Chemical symbol for erbium
32. Start frequency (abbr.)
33. BS__ - the degree held by many RF Cafe visitors
34. Chemical symbol for tantalum
35. Test equipment (abbr.)
37. Chemical symbol for neodymium
38. Used to remove oxidation during soldering
42. Mate to a bolt (pl.)
44. Society of Civil and Structural Engineers (abbr.)
45. Loose end of a cable
46. Raise a number to the 3rd power
48. Application Specific Integrated Circuit (abbr.)
51. Unix, Linux or Windows (abbr.)
52. Filter type that blocks upper frequencies (abbr.)
54. 1,000 seconds (abbr.) *
56. Unit of volume (abbr.)
57. Chemical symbol for argon
58. Chemical symbol for neon
59. Extremely high strength fiber used in explosion-proof enclosures & bullet-proof vests *
60. Read-only (abbr.)
61. Half of DSB
63. Sound frequency in the human hearing range (abbr.)
64. Volume unit (abbr., pl.)
65. Stock symbol for Skyworks Solutions
68. Receiver power level circuitry (abbr.)
70. Application Specific Integrated Circuit (abbr.) *
71. Electron beam particle
72. Mr. Gauss' first name
73. Chemical symbol for terbium
75. Isolated charge
78. Chemical symbol for tin
79. 26.5 GHz to 40 GHz
80. Parts distributor in Newark, NJ *

See solution below


2023 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.

2024 | 2023 |2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | Sudoku


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 31

December 24

December 17

December 10

December 3

November 26

November 19

November 12

November 5

R-E Puzzler - August 1967 R-E

October 29

October 22

October 15

October 8

October 1

September 24

September 17

September 10

September 3


August 27

August 20

August 13

August 6

Electronic Numbers - May 1961 R-E

July 30

July 23

July 16

July 9

R-E Puzzler - Oct 1967 R-E

July 2

June 25

June 18

June 11

June 4

May 28

May 21

May 14

May 7


April 30

April 23

April 16

April 9 - Easter

R-E Puzzler - Jan 1967 R-E

April 2

March 26

March 19

March 12

March 5

February 26

February 19

February 12

February 5

January 29

January 22

January 15

January 8

January 1

Electronics Themed Crossword Puzzle Solution for January 22, 2023 - RF Cafe

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