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RF Cafe Engineering & Science Crossword Puzzle
November 5th, 2023

As with my hundreds of previous engineering and science-themed crossword puzzles, this one for November 5th 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 for November 5th, 2023 - RF Cafe 

<click for full size to print>

1. Lacing ____, for bundling cables
4. Form of digital encoding
9. BASIC looping keyword
11. Stranded shield in coax cable
15. Design for Manufacturability (abbr.)
17. One port of an amplifier
18. Ham-ese for Young Lady
19. Pertaining to the moon
21. Large radio telescope in Puerto Rico
23. Boolean expression (pl.)
25. Synchronous Digital Hierarchy
28. Electromotive force (abbr.)
29. U.K. equivalent of the IEEE
30. Common mode ripple rejection (abbr.)
32. Solid state power amplifier (abbr.)
34. Semiconductor and calculator company (abbr.)
35. Country of RF Cafe's residency
37. Electronically images a document
39. Voltage-Controlled Oscillator (pl.)
41. Type of current flow (abbr.)
42. Chemical symbol for magnesium
43. On-the-air meeting of hams at a set time, day and radio frequency (pl.)
45. Agilent's (now Keysight) EE design software (abbr.)
46. 3 GHz to 30 GHz
49. End of Life (abbr.)
50. "Texting" (abbr.)
51. Unit of inductance (abbr.)
52. Infrared (abbr.)
53. A BPF specification (abbr.)
54. Rotating disk
56. Min______ and Max_____, in a Karnaugh map
59. Institute of Electrical and Electronics Engineers
61. Finite Element Analysis (abbr.)
62. Chemical symbol for einsteinium
64. End of transmission (abbr.)
65. BASIC program command
67. Unit of inductance (abbr.)
69. Weight (abbr.)
70. Radio signal that propagates along the ground (2 wds.)
73. Test equipment (abbr.)
74. Chemical symbol for aluminum
75. Logical gate type (pl.)
77. International Microwave Symposium (abbr.)
78. Boob tube (abbr.)
79. Using Earth's natural satellite as a passive reflector to establish a signal path (abbr.)
80. Possess luminosity
81. Path followed by a heavenly body around a star
83. The "C" in BCD
86. Stock symbol for Boeing
87. Chemical symbol for calcium
88. Boob tube (abbr.)
90. Scheme to maintain proper frequency (abbr.)
91. Type of logic gate (pl.)
93. Common shorthand reference for a capacitor
94. USA's most widely used satellite navigation system
95. Stock symbol for Google
97. Multifunctional silicon devices (abbr.)
98. Unit of frequency (archaic, abbr.)
99. Electric enclosure standard organization (abbr.)
101. Short waveform excursion from a reference state
103. The design component of total product cost (abbr.)
104. Shorthand for oxygen
105. Compliment to a zero in a polynomial
108. Antenna radiated power measurement (abbr.)
110. Early predecessor to an online forum (abbr.)
111. 30 Hz to 300 Hz
113. Type of logic gate
115. Snail and E are examples of this
116. Electromagnetic surveillance thwarting technology
118. The "S" in SOIC
120. Type of component package (abbr.)
122. Chemical symbol for chromium
123. Personal Handy Phone System (abbr.)
124. System for underwater navigation
126. Effective Radiated Power (abbr.)
127. An array of 12 or 16 numbered keys that generate the standard telephone dual tone multifrequency (DTMF) dialing signals (2 wds.)
128. Measure of source/load match
1. Studies for a test just before taking it
2. Chemical symbol for rubidium
3. One port on a FET (pl.)
4. Abbreviation for minimum voltage
5. Adds solder to the tip of a soldering iron
6. Last keyword in a BASIC subroutine (pl.)
7. Word used in describing 2-D and 3-D object dimensions; i.e., 10 mm __ 25 mm
8. Precision landing system (abbr.)
9. Upper frequency (abbr.)
10. Exponent that returns the original number
12. Amateur Radio Emergency Service (abbr.)
13. U.K. equivalent of the IEEE
14. Type of current
15. Logarithmic unit of voltage
16. This is required to causes a change in the motion of a body
19. A coherent monochrome light source
20. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
22. Multifunctional silicon devices (abbr.)
24. Send junk e-mail
26. Dual Tone Multi-Frequency
27. Level of EMF generally considered to be dangerous
31. One factor of a polynomial
33. Automatic Calibration System (abbr.)
35. Type of transistor that acts as a diode with its own internal voltage divider biasing circuit
36. PC follower
38. Type of data conversion device (abbr.)
40. Insulating cover over a solder joint
44. Term for asymmetry of a statistical distribution (pl.)
46. Metal or plastic rod that connects a potentiometer wiper to a knob
47. Chemical symbol for helium
48. Chemical symbol for iron
50. Surface Mount Technology
54. BER, 8 bits at a time
55. Mr. de Forest's first name
57. Term indicating profitability of a company (abbr.)
58. Local Oscillator (abbr.)
60. Radio signals from the cosmos (abbr.)
61. Kind of nuclear reaction which powers both the sun and the hydrogen bomb
63. O-scope time base action
65. Mr. Ohm's first name
66. Chemical symbol for tantalum
68. Chemical symbol for holmium
70. Miniature RF connector
71. A feedback scheme to level out the receiver audio volume (abbr.)
72. Stock symbol for Advanced Micro Devices
73. Chemical symbol for thallium
76. Read-only (abbr.)
77. International Reply Coupon (abbr.)
80. Hydrogen, argon, neon, xenon, etc.
81. The UK's equivalent of the FCC
82. Technical drawing structure
84. Amateur radio abbreviation for the Oceania region (abbr.)
85. 10E1 numerical prefix
86. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (abbr.)
87. Popular graphics program
89. Voltage-controlled crystal oscillator (abbr.)
90. Unit of current
92. Type of chart used to plot immittance
94. Mr. Kirchhoff's and Mr. Eiffel's first name
96. Switch position
100. Amateur Radio Emergency Service (abbr.)
101. Common solder composition (pre-lead-free, abbr.)
102. Traditional term for a person who enjoys helping newcomers get started in ham radio - a mentor
106. Tie a bundle of wires together
107. Antenna radiated power measurement (abbr.)
109. Related to FM by a differential
110. Chemical symbol for beryllium oxide
112. Far-field
114. Readability, Signal, and Tone (QoS report type)
117. Unit of time (abbr.)
119. Filter type that blocks upper frequencies (abbr.)
121. Chemical symbol for molybdenum
123. Chemical symbol for palladium
125. Type of flip-flop

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



Engineering & Science Crossword Solution November 5th, 2023 - RF Cafe

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