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. A feed line with two conductors having equal but opposite voltages, with neither conductor at ground
potential (2 wds.) 12. Gigantic star in Cetus 13. The "O" in ROM 14. Front end of a rocket
16. PC follower 18. Test point (abbr.) 20. With 29 Across, this website's title 22. Type of
current 23. Chemical symbol for beryllium 24. Greek letter 26. Automatic Testing, Evaluation &
Reporting (abbr.) 29. With 20 Across, the world's best engineering website 31. Stock symbol for
Harris Communications 32. Communications pairing between transmitter and receiver 34. Colorado
Springs military school (abbr.) 35. Readability, Signal, and Tone (QoS report type) 36. One factor
of a polynomial 37. Amateur radio abbreviation for the Oceania region (abbr.) 38. Intel x86 command
for " jump if above" 40. Type of high frequency diode (abbr.) 43. Unit of inductance (abbr.)
44. Chemical symbol for arsenic 45. Mass unit (abbr.) 47. Deutsche Industrie Normenausschuss
49. Chemical symbol for arsenic 50. High-speed logic family 52. Analog-to-Digital (abbr.) 53.
Chemical symbol for iron 54. Printer output resolution unit (abbr.) 55. Ratio of circumference
to diameter 56. Radio Amateurs of Canada (abbr.) 57. Type of current flow (abbr.) 58. Greek
letter 59. Unit of time (abbr.) 60. PCB interconnects 63. Chemical symbol for californium
65. Modulation type (abbr.) 67. Target indication on a radar display 69. Add solder to tip of
iron 70. Wire diameter unit (abbr.) 72. An overcurrent protection device 74. Stock symbol for
Advanced Micro Devices 75. Electronic Variable Optical Attenuator (abbr.) 76. Computer Assisted
Design and Development 78. Push to Talk (abbr.) 79. Unit of time (abbr.) 80. Time delay (abbr.)
81. Chemical symbol for tin 83. Chemical symbol for erbium 85. Chemical symbol for selenium
86. Unit of energy (pl.) 88. High electron mobility transistor 90. Move in a raster pattern
91. Ability of a substance to store electrical energy in an electric field |
1. The "B" in BER 2. Advanced Research Projects Agency (abbr.) 3. Chemical symbol for lanthanum
4. Chemical symbol for nobelium 5. Carrier-to-noise ratio (abbr.) 6. 30 Hz to 300 Hz 7. Chemical
symbol for dysprosium 8. One port of an amplifier 9. Current summing point 10. A keyboard key
11. Monte-_____ analysis 15. Determines proper functionality 17. Circuit substrate type where
conductors and passive components are 'screened' on and fired (2 wds., pl.) 19. Term for the sharpness
of a displayed image 21. Electron beam pattern method used in CRTs (2 wds.) 23. Transmits a signal
25. Switch position 27. Chemical symbol for tantalum 28. Type of data storage IC 29. Type of
computer display (abbr.) 30. Unit of length (abbr.) 31. Chemical symbol for holmium 33. Unit
for 1,000 watt-seconds (abbr.) 36. Chemical symbol for rhodium 39. Type of data conversion device
(abbr., pl.) 41. International phonetic alphabet letter "P" 42. Application Specific Integrated
Circuit (abbr.) 43. Type of programmable device (abbr.) 46. Electronics manufacturer with "meatball"
logo 48. Internet protocol (abbr.) 51. Chemical symbol for calcium 52. A common battery cell
size 58. 8 GHz to 12.5 GHz 59. Min-to-max voltage of a waveform (abbr.) 61. Rádio Nacional
de Angola (abbr.) 62. Science of assuring operation amid dense EM background noise (abbr.) 64.
Small unit of capacitance (abbr.) 66. Metric length unit 68. Opposite of O.D. 69. Boob tube
(abbr.) 71. Chemical symbol for mendelevium 73. One type of electron spin 75. Enhanced Datarates
for Global Evolution 77. Digital Enhanced Cordless Telephone 80. Total radiated power (abbr.)
81. Adjust a pot 82. Nordic Mobile Telephone 84. Straight line emanating from a point source
87. Chemical symbol for strontium 88. Opposite of a LO 89. Semiconductor and calculator company
(abbr.) 90. Chemical symbol for silicon |
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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