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RF Cafe Engineering & Science Crossword Puzzle
September 29, 2019

For two decades, I have been creating custom engineering- and science-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. This September 29, 2019, puzzle uses a database of thousands of words which I have built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. 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.

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs or works crosswords.


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 September 29, 2019 - RF Cafe

<click for full size to print>

ACROSSDOWN
1. Megavolt / 1000
6. Facility where semiconductors are manufactured
9. RF ________ for Visio, RF Cafe's amazing block diagram and schematic shapes
15. Engineering Change Order (abbr.)
16. Greek letter, used to indicate summation
18. European Telecommunications Standards Institute (abbr.)
20. One component of a complex number (abbr.)
21. Indium phosphide (abbr.)
23. Automated Test Equipment (abbr.)
24. Programmable Logic Device (abbr.)
25. Prefix for 10E-18
26. Chemical symbol for radium
28. Telex-Over-Radio (abbr.)
30. Below ELF
32. Cellphone band directly above DCS
33. Frequency band at low end of audio spectrum
34. Antenna radiated power measurement (abbr.)
37. Bands between RF and baseband
39. Impurity in a semiconductor (pl.)
43. 1e-6 mA
44. Edge of an airplane wing where ailerons and flaps are attached (abbr.)
45. Benjamin Franklin's kite was struck by it
48. Radio Amateur Satellite Corporation (abbr.)
50. Chemical symbol for rubidium
52. Chemical symbol for polonium
53. System for guiding aircraft (abbr.)
54. Army-Navy specification prefix
56. __ + , 42 Down, the world's best engineering website
57. 3 GHz to 30 GHz
59. Opposite of I.D.
62. Chemical symbol for neodymium
64. Hydrogen, argon, neon, xenon, etc.
67. X-ray film image (pl.)
71. A common battery cell size
73. Band between RF and BB
74. Its chemical symbol is Bi
76. Resistive component of a capacitor's lumped element model (abbr.)
77. Electrical unit of potential difference
78. Target indication on a radar display
79. Filter type (abbr.)
80. System On Chip
82. Logic family (abbr.)
84. Chemical symbol for lutetium
85. Mr. Dirac's first name
87. The cell band above DCN
90. Internet address (abbr.)
91. Half of a DIP
92. PC follower
93. Positive emitter-coupled logic (abbr.)
95. _____ factor, the peak-to-average waveform value
98. Permeability-tuned oscillator (abbr.)
99. RF Cascade ________, the world's best Excel-based spreadsheet of its kind
100. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)
101. Type of power supply
1. It connects the software to the hardware
2. Current-voltage phase mnemonic
3. Local Oscillator (abbr.)
4. Opening for airflow
5. Local Oscillator (abbr.)
6. The "F" in EMF
7. Chemical symbol for silver
8. Graphics file extension
10. Test equipment (abbr.)
11. On-the-air meeting of hams at a set time, day and radio frequency (pl.)
12. Logic gate output configuration (abbr.)
13. A line on a map which joins points of equal pressure
14. Chemical symbol for lithium
16. Official Space Shuttle designation (abbr.)
17. Chemical symbol for aluminum
19. Similar to a laser, but at lower frequencies
22. The tip of a PCB probe (pl.)
25. Automatic Calibration System (abbr.)
26. Readability, Signal, and Tone (QoS report type)
27. Its chemical symbol is Ar
29. RF integrated circuit (abbr.)
31. Finite Element Analysis (abbr.)
32. Push to Talk (abbr.)
35. Input intercept point (abbr.)
36. Unit of inductance (abbr.)
38. Chemical symbol for tin
40. Type of modulation (abbr.)
41. Resistive component of a capacitor's lumped element model (abbr.)
42. 56 Across + ____, the world's best engineering website
46. Chemical symbol for tantalum
47. High frequency semiconductor (abbr.)
49. Causes circuit path with very low or 0 ohms of impedance
51. Its chemical symbol is B
55. Stock symbol for National Semiconductor
57. Switch configuration (abbr.)
58. Start frequency (abbr.)
60. Keyboard key
61. Wire
63. Slang for Ursa Major
64. Image file format name extension
65. Chemical symbol for europium
66. Official Space Shuttle designation (abbr.)
68. Chemical symbol for xenon
69. PCB mask exposing ray (abbr.)
70. The stationary part of a motor
72. Arithmetic Logic Unit (abbr.)
74. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (abbr.)
75. Artech _____, technical book publisher
79. Illumination device
81. Type of computer display (abbr.)
83. Upward force generated by an airfoil
86. Abbreviation for acknowledge (also a common word used by Bill the Cat)
88. Unit of volume (abbr.)
89. The design component of total product cost (abbr.)
92. Automated Test Equipment (abbr.)
93. Chemical symbol for polonium
94. Galilean moon
96. Electromagnetic (abbr.)
97. Bandwidth (abbr.)
98. Unit of inductance (abbr.)

See solution below

 

2019 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.

2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | Sudoku

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December 15

December 8

December 1

November 24

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November 10

November 3

October 27

October 20

October 13

October 6

September 29

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September 1

August 25

August 18

August 11

August 4

July 28

July 21

July 14

July 7

June 30

June 23

June 16

June 9

June 2

May 26

May 19

May 12

May 5

April 28

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April 14

April 7

March 31

March 24

March 17

March 10

March 3

February 24

February 17

February 10

February 3

January 27

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January 13

January 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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