Take a break and work this week's
RF Engineering-themed crossword puzzle. All the words are pulled from a hand-built list of terms,
names, and abbreviations that have only to do with science, mathematics, and engineering. Clues for
words having to do with types of engineers are marked with an asterisk (*). If you want a crossword
with names of movie stars and obscure countries, try the local newspaper.
Reproduction of this puzzle without the express permission of RF Cafe is prohibited. acr. = acronym,
abbr. = abbreviation, pl. = plural, wds. = words

ACROSS 2. The "B" in BJT 6. Turn source into an executable file 11. Silicon
transistor type (abbr.) 13. Semiconductor On Insulator (abbr.) 14. Decimeter (abbr.) 15. Type
of engineer that deals with reliability and life cycle issues* 19. Home state of Los Alamos lab (abbr.)
20. Stock symbol for Hewlett Packard 23. Total radiated power (abbr.) 24. BlackBerry or Palm for
example (abbr.) 26. Type of data conversion device (abb.) 28. Signals in the sky 30. FCC's
Universal Licensing System (abbr.) 33. Reduce 35. Nordic Mobile Telephone 36. Adheres 38.
Airport Surveillance Radar (abbr.) 40. Encased in a protective covering 41. Electron beam particle
43. Conductor size unit (abbr.) 45. Type of logic gate (pl.) 47. Singulated piece of IC wafer
48. Logical negation operator 49. High power density battery chemistry (abbr.) 51. Unit of length
(abbr.) 53. Semiconductor and calculator company (abbr.) 54. Move like a wheel along a surface
56. 30 GHz to 300 GHz 57. Transmit Incremental Tuning (abbr.) 58. The "T" in ATE 59. Write-Once
(abbr.) 61. Chemical symbol for praseodymium 62. Type of antenna with an element made of a single,
flexible rod or tube 64. Automatic Calibration System (abbr.) 65. Radio Amateurs of Canada (abbr.)
67. Exponent that returns the original number 68. Frequency Division Duplex 69. The "D" in RFID
(pl.) 71. Threaded tuning rod in a coil 72. Type of logic gate 75. Type of reconfigurable memory
(abbr.) 78. Greek letter 80. Short for "intermodulation" 84. File name extension for an ASCII
file 85. What relationship does one wave motion have to another if its frequency is a multiple of
the other 88. World's largest yearly convention of gadget and device manufacturers (abbr.) 89.
Logarithmic unit of ratio (abbr., pl.) 91. Yttrium Aluminum Garnet 92. Type of computer display
(abbr.) 93. Unit of apparent power (abbr.) 95. Mr. Röntgen's first name 97. Chemical symbol
for thallium 98. 30 Hz to 300 Hz 100. Having power applied (slang) 101. Contact used on motors
to conduct current through a rotating interface (pl.) 102. Type of engineering that involves determining
how a product was made by somebody else* |
DOWN 1. Type of engineer that designs machines, enclosures, brackets, supports,
etc.* 3. International phonetic alphabet letter "I" 4. Parts per million (abbr.) 5. Switch
position 7. Unit of time (abbr.) 8. Charged particle 9. Restrain voltage input 10. Type
of engineer that deals with circuits* 12. Chemical symbol for chlorine 15. Ham's code for "Shall
I send more slowly?" 16. One type of electron spin 17. Test point (abbr.) 18. 36 in. (abbr.,
pl.) 21. Spurious RF products created by metal joints (abbr.) 22. Ham's code for "Shall I stop
sending?" 23. Test equipment (abbr.) 25. Chemical symbol for gold 26. A common battery cell
size 27. Cellphone band below PCS 29. Arrangement of vectors showing phase relationships between
two or more AC quantities of the same frequency (2 wds.) 30. Electrical safety organization (abbr.)
31. Mr. Boltzmann's first name 32. Chemical symbol for selenium 34. RF Cafe webmaster's last name
36. Chemical symbol for gadolinium 37. Chemical symbol for antimony 39. Variable resistor (pl.)
42. Type of engineer that deals in the region of the radio spectrum above 1 GHz* 43. Analog-to-Digital
(abbr.) 44. Electronics manufacturer with "meatball" logo 46. Term for asymmetry of a statistical
distribution (pl.) 48. Fuel additive 50. Current-voltage phase mnemonic 52. Unit of admittance
53. End of soldering iron 55. Family of ICs with a certain component density level (abbr.) 58.
Circuit or mechanical professional usually with an Associate's or higher degree and/or military experience*
60. Type of engineer that deals with aircraft tracking systems (pl.)* 63. Type of engineer that deals
with product creation in the factory* 65. Type of engineer that deals with communications across
the electromagnetic spectrum* 66. Chemical symbol for cadmium 70. Morse Code for "from" 71.
Type of component package (abbr.) 73. Exponent that returns the original number 74. A common RS-232
serial bus command (abbr.) 76. Last stage in a transmitter (abbr.) 77. Amateur radio abbreviation
for the Oceania region (abbr.) 78. RF connector type 79. Powers pneumatic devices 81. A Ham
station that operates from several grid squares or counties during a contest 82. Opposite of I.D.
83. Logarithmic unit of power (abbr.) 85. Amateur radio enthusiast 86. Chemical symbol for silver
87. Transitions from solid to liquid phase 90. Chemical symbol for silicon 91. Ham-ese for Young
Lady 94. Arithmetic Logic Unit (abbr.) 96. Filter type that blocks lower frequencies (abbr.)
97. Telex-Over-Radio (abbr.) 99. Start frequency (abbr.) 100. Chemical symbol for helium |
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
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

|