For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has
a theme related to engineering, mathematics, chemistry, physics, and other technical words. You will
never be asked the name of a movie star unless he/she was involved in a technical endeavor (e.g., Hedy Lamarr). Enjoy!
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

1. Signal path with very low or 0 ohms of impedance (2 wds.) 8. General Mobile Radio Service (abbr.)
9. Band between RF and BB 11. Effective frontal area presented to a microwave interrogation system
(abbr.) 12. Semiconductor On Insulator (abbr.) 14. Asynchronous Communication Interface Adapter
(abbr.) 17. Unit of length (abbr.) 19. Network department (abbr.) 20. Open a fuse 22. Type
of high frequency circuit substrate (abbr.) 24. 1e-6 mA 26. Network configuration type 28.
Satellite milieu 29. Defense Advanced Research Projects Agency 31. Length times width 33. __
+ 23 Down, the world's greatest engineering website 34. Antenna type derived from simple weighted
wires dropped from Zeppelin airships 36. Plug-in for computer bus 38. Max or min voltage of a
waveform (abbr.) 39. International phonetic alphabet letter "X" 41. Differential Phase Shift Keying
43. Local Oscillator (abbr.) 45. Junk e-mail 47. Application Specific Integrated Circuit (abbr.)
49. Chemical symbol for einsteinium 51. Branch of the armed forces 53. Network device that takes
commands from another similar device 54. Min______ and Max_____, in a Karnaugh map 56. Digital
intelligence 58. Opposite of I.D. 59. Type of microwave frequency source using element #39 as
the core (abbr., pl.) 61. Lacing ____, for bundling cables 63. Morse Code for "from" 64. Chemical
symbol for rhodium 66. Type of programmable device (abbr.) 67. Miniature RF connector 68. Precision
approach radar (abbr.) 69. Electromagnetic (abbr.) 72. Total Access Communication System (abbr.)
73. Unit of wire size (2 wds., pl.) |
1. Miniature RF connector (pl.) 2. Stock symbol for Harris Communications 3. Unix, Linux or Windows
(abbr.) 4. Device to assist in the performance of a chore (pl.) 5. Galilean moon 6. Volts,
meters, pints, pounds, eg. 7. Semiconductor and calculator company (abbr.) 8. Test equipment that
causes a meter decrease (null) when near resonant circuits (3 wds.) 10. Small unit of capacitance
(abbr.) 12. Chemical symbol for antimony 13. Islands On The Air (Ham term) 15. Chemical symbol
for chlorine 16. Adjacent Channel Power Ratio (abbr.) 18. Instrument designed to measure temperature
(pl.) 21. World Amateur Radio Conference 23. 33 Across + ____, the world's best engineering website
24. Non-return to zero (abbr.) 25. Highest point 27. A disk operation 30. Automatic Packet
Position Reporting System (abbr.) 32. Advanced Research Projects Agency (abbr.) 35. International
phonetic alphabet letter "P" 37. Type of spread spectrum that does not use frequency hopping (abbr.)
40. 36 inches 42. International phonetic alphabet letter "K" 44. The "V" in VLF 46. Million
multiply accumulate operations (abbr.) 48. Software drafting tool (abbr.) 50. Internet mail protocol
(abbr.) 52. Microwave frequency source using element #39 as the stabilizing component (abbr., pl.)
55. Relating to the sun 57. Strong cable covering 60. Chemical symbol for scandium 62. Logarithmic
ratio (abbr.) 63. Type of data conversion device (abbr., pl.) 65. Chemical symbol for helium
68. Programmable logic device (abbr.) 70. Unit of frequency (archaic, abbr.) 71. Electrical safety
organization (abbr.) 72. Semiconductor and calculator company (abbr.) |
See solution below
Take 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.
2021 | 2020
| 2019 | 2018
| 2017 | 2016
| 2015 | 2014
| 2013 | 2012
| 2011 | 2010
| 2009 | 2008
| 2007 | 2006
| 2005 | 2004
| 2003 | 2002
| 2001 | 2000
| Sudoku
December 25 December 18 December 11 December 4
November 27
November 20
November 13
November 6
October 30 October 23 October 2 September 25 September 18 September 4
August 28
August 21
August 14
August 7
July 31
July 24
July 17
July 10
July 3
June 26
June 19
June 12
June 5
May 29
April 10
March 20
March 13
March 6
February 28
February 21
February 7
January 31
January 24
January 17
January 10
January 3

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