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Electronics Theme Crossword Puzzle
October 15th, 2023

This week's crossword puzzle for October 15th sports an electronics theme. This being the 15th day of the month, many of the words begin and/or end with the letter "O." Clues for words containing "O" are marked with an asterisk (*). All RF Cafe crossword puzzles are custom made by me, Kirt Blattenberger, and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc., which I have built up over more than two decades. Many new words and company names have been added that had not even been added to the world's technical lexicon when I started in the year 2002.

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. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.  The technically inclined cruciverbalists amongst us will appreciate the effort. A full list of all RF Cafe crosswords is at the page bottom. 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 October 15th, 2023 - RF Cafe


1. Oriented at a 90 degree angle to a reference (pl.) ***
2. Chemical symbol for terbium
3. Hydrogen, argon, neon, xenon, etc.
4. Chemical symbol for silicon
5. Type of component package (abbr.)
6. Apollo 11 astronaut ____ Armstrong
9. Test instrument for measuring resistance (pl) *
11. Galilean moon *
15. Local Oscillator (abbr.) *
16. End of soldering iron
17. Greek letter (micro)
19. Very large unit of apparent power (abbr.)
20. Chemical symbol for praseodymium
22. Decimeter (abbr.)
24. A measure of receiver quality (abbr.)
26. Electromagnetic (abbr.)
27. Global System for Mobile Communications (abbr.)
28. Generate a periodic signal *
29. Software storage unit
32. Unit of apparent power (abbr.)
34. Chemical symbol for scandium
36. Test instrument for measuring resistance (pl) *
38. BS__ - the degree held by many RF Cafe visitors
40. Digital storage oscilloscope (abbr.) *
43. Unit of inductance (abbr.)
45. Modulation type (abbr.)
46. Wavelength division multiplexing (abbr.)
48. The "O" in VCO (pl.) **
49. Applies too large of a signal **
50. S12 or S21 (abbr.)
51. Radio term for indicating the end of a transmission segment *
53. 10E1 numerical prefix
55. Chemical symbol for argon
57. Country of RF Cafe's residency
62. Chemical symbol for niobium
63. Chemical symbol for iron
64. Be behind in phase
65. Radio signals from the cosmos (abbr.)
67. Chemical symbol for einsteinium
68. U.K. equivalent of the IEEE
72. Unit of frequency (archaic, abbr.)
73. Relating to sound *
74. Chemical symbol for tin
75. Fast-Scan TV
78. Internet protocol (abbr.)
82. Chemical symbol for francium
83. 1E6 nanoseconds
85. Chemical symbol for nobelium *


1. Releasing volatile products from a liquid coating such as paint *
7. Stock symbol for Boeing
8. Intermodulation (abbr.)
10. Semiconductor and calculator company (abbr.)
12. Chemical symbol for selenium
13. The "H" in UHF
14. Majority carrier in p-type material *
16. Chemical symbol for thulium
18. Its chemical symbol is Os *
20. Related to FM by a differential
21. Chemical symbol for gadolinium
23. Abbreviation for peak voltage
24. The design component of total product cost (abbr.)
25. Greek letter used for resistance *
28. Switch position *
30. 1E6 nanoseconds
31. Family of ICs with a certain component density level (abbr.)
32. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)
33. Chemical symbol for arsenic
35. Chemical symbol for molybdenum *
37. Opposite of set
39. Display type
41. U.K. equivalent of the IEEE
42. Add two or more inputs
44. Mathematical relationship of voltage, resistance, and current in a circuit (2 wds.) *
47. Stock symbol for Advanced Micro Devices
50. Newest buzz phrase for ubiquitous remote control and monitoring of everything (abbr.) *
52. Lowest power level capable of being demodulated (abbr.)
54. British term for vacuum tube
56. Chemical symbol for europium
58. Type of current flow (abbr.)
59. Chemical symbol for erbium
60. Unit of energy
61. Chemical symbol for tin
63. An unlicensed radio band in the U.S. often used for walkie-talkies (abbr.)
64. Software object reference name
66. Mr. de Forest's first name
68. State where teen techno-sleuths Carl and Jerry lived (abbr.)
69. Chemical symbol for thallium
70. Unix, Linux or Windows (abbr.) *
71. Greek letter used for resistance (pl.) *
76. European equivalent to the U.L.
77. Volt, meter, pint, pound, eg.
79. The "D" in CD
80. Chemical symbol for palladium
81. Chemical symbol for polonium *
82. Type of modulation (abbr.)
84. One port of an amplifier
86. Goes beyond the steady-state voltage output ***

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 October 15th, 2023 - RF Cafe

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