For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to RF, microwave, electrical
and mechanical engineering, mathematics, chemistry, physics, astronomy, mathematics, 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. Ratio of the maximum carrier frequency deviation to the modulating frequency at a given instant in an FM transmitter (2 wds.) 12. Chemical
symbol for niobium 13. Software function selection mechanisms 14. Filter type that blocks frequencies in a specified band (abbr.) 16.
Unit of frequency (archaic, abbr.) 18. "Texting" (abbr.) 21. Logic gate output configuration (abbr.) 22. Ultra High Voltage (abbr.)
24. Chemical symbol for thallium 25. Science of assuring operation amid dense EM background noise (abbr.) 27. Degree of IC sophistication
(abbr.) 28. The "S" in SOIC 30. Change from one thing into another 31. Front end of a rocket (pl.) 34. Internet protocol (abbr.)
35. Permeability-tuned oscillator (abbr.) 37. Mass unit (abbr., pl.) 38. Chemical symbol for radon 39. Half of DSB 41. Current-voltage
phase mnemonic 42. Web page language 44. Parameter that is a figure of merit for receiver performance in presence of multiple signals
(abbr., pl.) 47. Turn on the computer 49. Chemical symbol for gallium 50. System On Chip 53. Color quality 54. Code for a type
of electrical wire insulation (abbr.) 56. Chemical symbol for cadmium 57. Amateur radio enthusiast 59. Type of chart 60. _____ Percy
Maxim, founder of the ARRL 62. The LM741 was the first 63. Curve formed by a point which moves according to a mathematically defined rule
66. Galilean moon 67. Powers pneumatic devices 69. Type of digital filter (abbr.) 70. Chemical symbol for lead 71. Curly-Q type
light bulb (abbr.) 73. Multiplexer (abbr.) 74. RF ____, the world's best engineering website 76. _____&Schwarz 79. Thread cutting
tools 81. Electrical safety organization (abbr.) 82. Volt-ohmmeter (abbr.) 83. Exponent that returns the original number 84. Shorthand
for liquid oxygen 85. Chemical symbol for strontium |
2. Switch position 3. Logarithmic unit of ratio (abbr., pl.) 4. Modulation type (acr.) 5. Temporary Engineering Change document (abbr.)
6. Unwanted mixing of two or more RF signals that creates unintended frequencies 7. One port of an amplifier 8. Unit of time (abbr.)
9. Logarithmic unit of voltage (abbr.) 10. Chemical symbol for erbium 11. Decimeter (abbr.) 15. Ham-ese for Young Lady 17. Applied
+ _____________ + Sciences, LINC2 RF system analysis software 19. Transitions from solid to liquid phase 20. Type of component package
(abbr.) 22. Unit of time (abbr.) 23. Device for allowing two surfaces to rotate wrt each other 24. Junction between two different metals
that produces a voltage related to a temperature difference (pl.) 26. Centimeter (abbr.) 27. Unit of inductance (abbr.) 28. Chemical
symbol for silicon 29. Filter type that blocks upper frequencies (abbr.) 32. Unix, Linux or Windows (abbr.) 33. Chemical symbol for
tin 36. Unix, Linux or Windows (abbr.) 37. Unit of frequency (archaic, abbr.) 40. Filter type that blocks frequencies in a specified
band (abbr.) 41. Network department (abbr.) 42. Chemical symbol for mercury 43. Unit of time (abbr.) 45. Unit of inductance (abbr.)
46. One component of a complex number (abbr.) 47. Bandwidth (abbr.) 48. Time delay (abbr.) 51. Describes a region on a semiconductor
that has a linear and symmetric I-V curve 52. Chemical symbol for calcium 54. Semiconductor and calculator company (abbr.) 55. The
shape of a circularly polarized antenna 58. Chemical symbol for molybdenum 59. Min-to-max voltage of a waveform (abbr.) 60. Opposite
of a LO 61. A common battery cell size 64. Type of logic gate 65. Chemical symbol for antimony 68. Part of this website's title
69. Upper frequency (abbr.) 72. Chemical symbol for lawrencium 73. Akin to an EE, CE, AE, etc. 74. Chemical symbol for copper 75.
1.602E-19 Joules 77. Chemical symbol for holmium 78. Morse Code for "from" 79. Ham abbreviation for "distant station" 80. Chemical
symbol for strontium |
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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