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. One port on a FET 5. Half of a DIP 8. 1/12th of a year 12. Type of spread spectrum that does not use frequency
hopping (abbr.) 13. Request for information from a database 14. Defense Advanced Research Projects Agency 15. Decimeter
(abbr.) 17. Akin to an EE, CE, AE, etc. 19. Chemical symbol for neon 20. Last stage in a transmitter (abbr.)
22. Equalizer (abbr.) 24. Computer interconnection scheme (abbr.) 26. Type of tank circuit (abbr.) 28. Science
of assuring operation amid dense EM background noise (abbr.) 29. International QSL forwarding bureau 31. Subatomic
particle having a mass between that of an electron and a proton 32. Voice of America 33. Chemical symbol for radium
35. "Texting" (abbr.) 37. Chemical symbol for platinum 39. With 27D, this website's title 40. Chemical symbol for
arsenic 42. Network department (abbr.) 44. _____-Doppler radar 45. Translated higher frequencies to lower frequencies
47. A 3rd-order polynomial 48. Morse Code for "from" 49. Ratio of circumference to diameter 50. Chemical symbol
for argon 51. Mate to an RX 53. ___/IP scheme for networked connectivity 55. Infrared (abbr.) 57. Total radiated
power (abbr.) 58. Negatively charged ion 60. Change connector type 61. Finite Element Analysis (abbr.) 62. Unit
of apparent power (abbr.) 64. Signal-to-noise ratio (abbr.) 66. Chemical symbol for manganese 68. Chemical symbol
for silicon 69. Chemical symbol for tin 71. Band between RF and BB 73. A BPF specification (abbr.) 74. Things
in a bill of material 76. The stuff in the solder core 78. Temperature-compensated crystal oscillator (abbr.) 80.
Heavenly body having a tail 81. BER, 8 bits at a time 82. Like an inductor coil with a ferrite form |
1. Slang for Ursa Major 2. Analog-to-Digital (abbr.) 3. Integrated Services Digital Network (abbr.) 4. Stock symbol
for National Semiconductor 5. Add two or more inputs 6. Institute of Electrical and Electronics Engineers 7. Chemical
symbol for praseodymium 8. ELI the ICE ___ 9. Used logic gates 10. Chemical symbol for neptunium 11. Mathematical
expansion (2 wds.) 16. Providing a complex conjugate impedance match to the end of a transmission line 18. Electron
beam pattern method used in CRTs (2 wds., pl.) 21. A non-commercial radio service as set by a recognized cognizant government
agency (2 wds.) 23. Ham's code for "Shall I send more slowly?" 24. Wired Equivalent Privacy (abbr.) 25. Chemical
symbol for nobelium 27. 39A + ____, the world's best engineering website 30. Unit of time (abbr.) 34. Half of the
diameter (pl.) 36. Referring to a right triangle, the trigonometric function equal to the ratio between the side opposite
a given angle, and the hypotenuse, pl. 38. Relating to sound 41. System On Chip 43. Boob tube (abbr.) 44. Peak
envelope power (abbr.) 46. Opposite of I.D. 47. Cable television (abbr.) 52. Type of logic gate 53. Time Division
Multiplexing 54. Min-to-max voltage of a waveform (abbr.) 56. ______ cosine filter 59. Unit of time (abbr.)
63. BSEE + 2 years 65. Tool for holding parts while working on them 67. Voltage-controlled crystal oscillator (abbr.)
70. Nordic Mobile Telephone 72. Type of digital filter (abbr.) 73. U.S. Spectrum allocation agency 75. Chemical
symbol for thulium 77. Modern battlefield technique (abbr.) 79. Type of logic gate |
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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