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RF Cafe Engineering & Science Crossword Puzzle
October 22nd, 2023

As with my hundreds of previous engineering and science-themed crossword puzzles, this one for October 22nd uses 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

Engineering & Science Crossword Puzzle October 22, 2023 - RF Cafe 

<click for full size to print>

1. Symbols and lines used to construct a representative drawing of a system at a high level (2 wds., pl.)

11. Applied more signal than a circuit can handle

19. Bit rate unit

20. One states of matter (pl.)

21. 2-element, 1/2 wavelength antenna fed at the center

22. Asynchronous Communication Interface Adapter (abbr.)

24. Unit of energy

25. Flash caused by an electric current ionizing a gas or vapor

27. Cable termination type (pl.)

28. 10E-9 numerical prefix

29. Measured a waveform at regular intervals

31. Chemical symbol for selenium

32. Swiss mathematician who extensively studied complex numbers

34. Chemical symbol for einsteinium

35. Chemical symbol for molybdenum

36. Enhanced Graphics Adapter

38. SIP x 2

39. Chemical symbol for scandium

40. Last statement in a BASIC program

41. Adjusts a pot

44. Type of current

46. Voltage-current phase mnemonic

48. Constellation : The lion

50. Extended Binary-Coded Decimal Interchange Code (abbr.)

52. Logarithmic ratio (abbr.)

53. Red supergiant in Orion

56. SIP x 2

58. Effective frontal area presented to a microwave interrogation system (abbr.)

59. Chemical symbol for europium

60. Galilean moon

61. Opposite of O.D.

62. Unit of length (abbr.)

64. Mr. de Forest's first name

66. Digital storage oscilloscope (abbr.)

68. Controlled impedance transmission line on a substrate

72. Chemical symbol for nickel

73. O-scope time base actions

76. Bits per second (abbr.)

78. Anatech Electronics Inc., (abbr.)

79. Chemical symbol for erbium

80. Prefix for font without serifs

82. IC killer (abbr.)

83. Army-Navy specification prefix

85. Electromotive force (abbr.)

87. Logarithmic unit of voltage (abbr.)

89. 1.602E-19 Joules

90. Part of a FOR loop

91. Summer

93. 10E1 numerical prefix

94. Displayed a radar target

97. Drill a hole

99. Short for synchronous

101. Communication between stations by reflecting the radio waves off of the ionosphere

102. Wireless application protocol (abbr.)

103. Mechanical engineering organization (abbr.)

104. Type of reconfigurable memory (abbr., pl.)

106. Type of high frequency diode (abbr.)

108. Tie a bundle of wires together

109. Acts of summation

110. S21 (2 wds.)

1. No insulation

2. Cable termination type

3. Opposite of I.D.

4. ___ Friedrich Gauss, after whom the unit of magnetic field strength is named

5. Network department (abbr.)

6. Online service

7. Adheres

8. Slang for transmitter and/or receiver (pl.)

9. Agilent's EE design software (abbr.)

10. 1E6 nanoseconds

11. Trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse

12. Point in an revolving object's orbit that is farthest to the body it is orbiting

13. Part of a FOR loop

14. FCC's Universal Licensing System (abbr.)

15. A disk operation

16. Connected to a transformer interwinding point

17. High-speed logic family

18. Thread cutting tools

19. ______ Associates, an RF design seminar company

21. 10E1 numerical prefix

23. Type of data conversion device (abbr., pl.)

25. Relating to sound

26. World's largest yearly convention of gadget and device manufacturers (abbr.)

28. Current summing point

30. 1/000 of an inch

32. Last statement in a BASIC program

33. Removed oxygen from or added hydrogen to a compound

37. High temperature substrate

40. Exalted-Carrier Single Sideband (abbr.)

42. Chemical symbol for terbium

43. Morse Code for "from"

45. Abruptly limit the amplitude of a signal

47. FCC Part 15 rules apply in this band (abbr.)

49. Used lubricant

51. Digital pattern coding type

53. ____-Einstein condensates

54. Telex-Over-Radio (abbr.)

55. Chemical symbol for gadolinium

57. Peak envelope power (abbr.)

59. Electronics Industry Association (abbr.)

60. Satellite of Jupiter discovered by Galileo

63. O-scope time base action

65. ______ velocity - speed necessary to become free of the Earth's gravitational force

67. Configured a switch to break electrical contact

69. Flat cable type

70. Technical drawing structure

71. Band between RF and BB

72. 1e-6 mA

74. Resistive component of a capacitor's lumped element model (abbr.)

75. International phonetic alphabet letter "P"

77. Surface Mount Technology

80. System for underwater navigation

81. Synchronous Digital Hierarchy

84. American space agency (abbr.)

86. 12 inches (pl.)

88. Volt-ohmmeter (abbr., pl.)

90. Enter data using the keyboard

92. One type of electron spin

93. Type of data conversion device (abbr., pl.)

95. Intermodulation distortion (abbr.)

96. Printer resolution abbreviation

98. Type of flip-flop

99. "Texting" (abbr.)

100. Logic gate output configuration (abbr.)

102. Akin to WAC, only just in America

105. Read-only (abbr.)

106. One port of an amplifier

107. Semiconductor and calculator company (abbr.)

108. Local Oscillator (abbr.)

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



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