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Electronics Theme Crossword Puzzle
October 8th, 2023

This custom RF Cafe electronics-themed crossword puzzle for October 8th 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 Themed Crossword Puzzle for October 8th, 2023 - RF Cafe

1. Type of coil configuration that generates a uniform magnetic field within itself *
6. Its chemical symbol is He *
9. Heterojunction Bipolar Transistor *
13. Chemical symbol for radium
14. Shorthand for oxygen
15. Stock symbol for Boeing
16. Chemical symbol for californium
17. R.A. ____, RF consultants
18. Radio signals from the cosmos (abbr.)
20. Narrowband Advanced Mobile Phone System (abbr.)
25. Real estate where equipment is located
27. One component of a complex number (abbr.)
28. 1/100 meter (abbr.) *
29. Newest buzz phrase for ubiquitous remote control and monitoring of everything (abbr.)
31. Mr. Piper's famous yellow airplane
32. Foot/12 *
34. Swiss mathematician who extensively studied complex numbers
36. S12 or S21 (abbr.)
39. Logarithmic ratio (abbr.)
40. Opposite of a LO *
41. Morse Code for "from"
43. ________ time, how long a stepped signal takes to go from 10% to 90% of its full-scale value
45. A false signal produced in a superheterodyne receiver's circuitry (pl.)
46. Chemical symbol for polonium
47. Chemical symbol for manganese
48. Electrical safety organization (abbr.)
53. Next best things to bearings *
55. 1e-6 mA
57. First lines in software that call external libraries (pl.) *
58. Small unit of capacitance (abbr.)
59. Moon of Saturn discovered in 1789
60. Min-to-max voltage of a waveform (abbr.)
62. Chemical symbol for strontium
63. Hollywood actress with first patent for spread spectrum communications (2 wds.) *
67. State where teen techno-sleuths Carl and Jerry lived (abbr.)
69. Its chemical symbol is Ho *
73. Chemical symbol for silver
74. Period during which equipment is not available for use
76. Electronics manufacturer with "meatball" logo
77. Opposite of I.D.
78. Chemical symbol for gallium
79. A radio operator’s name *
81. Its chemical symbol is H *
85. Chemical symbol for nobelium
86. Unit of time (abbr.)
87. __ + 92 Across, part of this website's title
89. Chemical symbol for silicon
90. Electro-mechanical switching device
92. 87 Across + ____, the world's best engineering website
93. Mate to a bolt
95. Fast Fourier transform (abbr.)
97. 1/000 of an amp (abbr.)
98. Electromagnetic (abbr.)
99. Solid state power amplifier (abbr.)
100. Nearest and furthest points to the center of gravitational attraction for a body in orbit (pl.)
102. Schema for computer or device presentation to the operator (abbr.)
103. Volts divided by resistance
105. Chemical symbol for thulium
106. Chemical symbol for rubidium
107. Chemical symbol for arsenic
108. 300 kHz to 3 MHz
110. Filter type (abbr.) *
111. Added an attenuator
112. Grouping of wires or cables (pl.) *
2. Chemical symbol for erbium
3. Computer communication scheme (abbr.)
4. Line of Sight (abbr.)
5. Mate to an RX
6. Type of cryptographic algorithm that takes a string and converts it to a numeric code **
7. Current-voltage phase mnemonic
8. Unit of capacitance (abbr.)
9. Chemical symbol for holmium *
10. Inventor of the pre-quantum atomic model *
11. Time Division Multiplexing
12. Mr. Lenz's first name **
17. Fuses metals together using heat
19. Part of a FOR loop
21. Type of current flow (abbr.)
22. Elementary particle
23. Chemical symbol for lead
24. Type of logic gate
26. Adjust
27. Chemical symbol for ruthenium
30. Service of the ARRL that helps hams solve technical problems (abbr.)
33. Unlicensed FCC Part 95 realm for personal and business radio use (abbr.)
34. Search ______; e.g., Google, Yahoo, Bing
35. BS__ - the degree held by many RF Cafe visitors
37. Filter type that blocks upper frequencies (abbr.)
38. Software function selection mechanism
40. Device for allowing two surfaces to rotate wrt each other (pl.) *
42. Unit of time (pl.) *
44. Miniature RF connector (pl.)
48. 300 MHz to 3 GHz *
49. Creating upward force with an airfoil
50. Software drafting tool (abbr.)
51. 10E1 numerical prefix
52. Chemical symbol for selenium
54. Signal-to-noise ratio (abbr.)
56. Chemical symbol for aluminum
60. Attenuator
61. Device used to make contact with a point to be measured (pl.)
63. Hardware found on panel doors (pl.) *
64. Logarithmic unit of power (abbr.)
65. Chemical symbol for lanthanum
66. The "A" in DARPA
68. Automated Test Equipment (abbr.)
69. ____ Lamar, Hollywood actress with first patent for spread spectrum communications *
70. Local Oscillator (abbr.)
71. Galilean moon
72. The "M" in TEM
75. Megohm (abbr.) *
79. Majority carriers in p-type material *
80. Cable termination type (pl.)
82. 1/4-turn fastener
83. Unix, Linux or Windows (abbr.)
84. Image file format name extension
85. Chemical symbol for neon
87. Chemical symbol for radium
88. Fast Fourier transform (abbr.)
90. Increase voltage linearly
91. Modulation type (abbr.)
92. Plug-in for computer bus
93. Chemical symbol for neptunium
94. Semiconductor and calculator company (abbr.)
96. Upper frequency (abbr.)
97. milliampere-hour (abbr.) *
99. Electronic component package type (abbr.)
100. Airport Surveillance Radar (abbr.)
101. "Texting" (abbr.)
104. Unit of capacitance (abbr.)
105. Chemical symbol for tantalum
107. A common battery cell size
109. Chemical symbol for iron

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

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January 8

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