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RF Cafe Engineering & Science Crossword Puzzle
March 10, 2019

Since 2000, I have been creating custom technology-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. A database of thousands of words has been 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

RF Cafe Engineering & Science Crossword Puzzle March 10, 2019

ACROSS DOWN
1. Adjective describing a device that requires an applied voltage to operate
8. Ratio of white to black on a CRT
13. Exponent that returns the original number
14. Hewlett's partner
17. Discipline for aircraft navigation in low visibility environments (abbr.)
18. The computer in 2001: A Space Odyssey
20. Chemical symbol for terbium
22. Chemical symbol for molybdenum
23. Radio signals from the cosmos (abbr.)
24. __ + 31 Across: The world's greatest engineering website
25. Unit of liquid measure (abbr., pl.)
27. Release control over
29. Service of the ARRL that helps hams solve technical problems (abbr.)
31. 24 Across + ____: The world's greatest engineering website
33. Filter type that blocks lower frequencies (abbr.)
34. A common battery cell size
35. Miniature threaded RF connector
36. Chemical symbol for tin
37. Chemical symbol for zinc
39. Unit of length (abbr.)
40. Automatic Calibration System (abbr.)
42. Programmable Logic Device (abbr.)
44. Chemical symbol for gadolinium
46. Term used to denote transmission of sound, video, data, etc. (pl.)
47. Mass unit (abbr.)
48. Time division duplex (abbr.)
49. Digital encoding of the transmission mode in the vertical sync portion of an SSTV image (abbr.)
50. Chemical symbol for neodymium
51. Chemical symbol for magnesium
53. Unit of time (abbr.)
55. Degree of IC sophistication (abbr.)
57. European equivalent to the U.L.
58. Type of flip-flop
59. Official engineering change document (abbr., pl.)
61. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
62. Multiprotocol Label Switching (abbr.)
64. Digital storage oscilloscope (abbr.)
66. Chemical symbol for arsenic
67. A common battery cell size
68. Logarithmic ratio (abbr.)
70. 1/000 of an amp (abbr.)
71. Chemical element abbreviated Sn
72. Stock symbol for Raytheon
74. Bluetooth network
77. Device under test (abbr.)
79. Fundamental electrical component w/units of ohms
80. Radio term for an unconventional frequency separation between input and output frequencies (2 wds.)
2. End of Life (abbr.)
3. Cyanide (abbr.)
4. Trans European Trunked RAdio
5. Internet protocol (abbr.)
6. Person responsible for program spending (abbr.)
7. Chemical symbol for berkelium
8. Type of computer display (abbr.)
9. Opposite of I.D.
10. Image file format name extension, (pl.)
11. "Microwaves & __" magazine
12. Automatic repeat request used in AMTOR (abbr.)
15. Commercial Off-the-Shelf
16. Active Electronically Scanned Array (abbr.)
19. Unit of current
21. Chemical symbol for beryllium
24. Chemical symbol for radium
26. Unit of frequency
27. Wear on a component due to repeated stress
28. Integrates data onto a carrier wave
30. Waveform described by a Dirac delta function
31. Half of table salt
32. Google, Yahoo, Bing, etc.
33. _____ Percy Maxim, founder of the ARRL
38. Front end of a rocket (pl.)
39. Electronics components & batteries supplier based in Japan
40. Logic family
41. Electronic component package type (abbr.)
42. Peak Inverse Voltage
43. 10E1 numerical prefix (pl.)
45. U.S. military organization (abbr.)
52. One state of matter
54. Electronically images a document
55. Million multiply accumulate operations (abbr.)
56. Integrated Services Digital Network (abbr.)
57. Encases in a protective covering
58. Radio frequency interference (abbr.)
60. Unix, Linux or Windows (abbr.)
63. Related to FM by a differential
65. Type of logic gate (pl.)
67. Powers pneumatic devices
69. Chemical symbol for beryllium oxide
71. Logic family (abbr.)
73. Semiconductor and calculator company (abbr.)
74. Chemical symbol for polonium
75. Switch position
76. Time delay (abbr.)
78. One type of electron spin

See solution below

 

2019 Crosswords Archive
Visit the Crossword Express website - RF CafeTake a break from the drudgery by trying 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

 

April 21

April 14

April 7

March 31

March 24

March 17

March 10

March 3

February 24

February 17

February 10

February 3

January 27

January 20

January 13

January 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RF Cafe Engineering & Science Crossword Solution March 10, 2019

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