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1996 - 2016
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Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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Engineering Crossword Puzzle
October 4, 2015

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 Lamar). Enjoy!

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Engineering Crossword Puzzle for October 4, 2015 - RF Cafe

Note: A standard for crossword puzzles is when all words in a clue are capitalized, the solution is the abbreviation or acronym for that clue; e.g., Alternating Current = AC.

ACROSS DOWN
1. Government program to bring electricity to farms (abbr.)
4. Secondary cell using a liquid as an electrolyte (2 wds.)
8. One system's phonetic letter "z"
11. Online service (acr.)
12. Abbreviation for "power"
13. Last stage in transmitter (abbr., pl.)
15. Amateur Radio Association (abbr.)
16. Negative temperature coefficient (abbr.)
17. Boob tube (abbr.)
18. Common shorthand reference for a capacitor
21. Chemical symbol for neptunium
22. Parts per million (abbr.)
23. Monte-_____ analysis
25. Sporadic E-layer ionospheric propagation (hyph.)
26. __ + 18 Down, thw world's best engineering website
27. Chemical symbol for cadmium
28. Type of vector product
29. Electromagnetic (abbr.)
31. A keyboard key
33. Morse Code for "from"
34. Filter type (abbr.)
37. Chemical symbol for aluminum
39. Chemical symbol for lanthanum
40. Radio frequency interference (abbr.)
43. International phonetic alphabet letter "K"
45. Its chemical symbol is Li
46. One factor of a polynomial
47. Control and monitoring board
48. Amateur Teleprinter Over Radio (abbr.)
49. One port on a FET
50. Configuring a switch to break electrical contact
54. A length of transmission line that is open or shorted at one end
56. Direct Digital Synthesis (abbr.)
57. Type of flip-flop
58. Chemical symbol for selenium
59. "Texting" (abbr.)
60. Word used in describing 2-D and 3-D object dimensions; i.e., 10 mm __ 25 mm
61. Official Space Shuttle designation (abbr.)
63. Type of current
65. One axis of an ellipse
66. Unit of frequency (archaic, abbr.)
67. Filter type that blocks upper frequencies (abbr.)
69. Device attached to an antenna mast which rotates it so that the antenna can point in different directions
71. Computer character set (abbr.)
73. Country of RF Cafe's residency
76. Chemical symbol for arsenic
78. Nuclear explosion byproduct harmful to electronics (abbr.)
79. Unit of time (abbr.)
80. The "B" in BER
82. Nordic Mobile Telephone
83. Units of 1000 CPS
85. Type of computer display (abbr.)
86. Peripheral Component Interface (abbr.)
87. Transformer interwinding connection
88. A fragmented geometric shape that can be split into parts, each of which is a reduced-size copy of the whole
89. Acronym for path of a fast-circling satellite
1. Useful distance between Tx and Rx
2. End of transmission (abbr.)
3. Circuit for maintaining constant voltage (abbr.)
4. National Bureau of Standards radio station (time signals)
5. Chemical symbol for erbium
6. Filter type that blocks upper frequencies (abbr.)
7. Computer communication scheme (abbr.)
8. Hit a component with an electrostatic discharge
9. Effective Radiated Power (abbr.)
10. Causes a voltage or current waveform to gradually die out
12. Positively doped silicon (hyph.)
14. Satellite milieu
18. 26 Across + ____, the world's best engineering website
19. Chemical symbol for argon
20. Type of programmable device (abbr.)
23. Chemical symbol for chromium
24. Opposite of I.D.
30. Battery company
32. Synchronous Digital Hierarchy
33. Degraded or destroyed performance
34. Chemical symbol for berkelium
35. Attenuator configuration (hyph.)
36. Area on a shaft for accommodating a setscrew (pl.)
38. Chemical symbol for lithium
39. Chemical symbol for lutetium
40. Factor of a polynomial
41. Online venue for posting comments & reading replies
42. Network department (abbr.)
44. Exponent that returns the original number
46. A common RS-232 serial bus command (abbr.)
49. Chemical symbol for gadolinium
51. Unit of time (abbr.)
52. Mate to a bolt
53. Unit of time (abbr.)
55. Filter type that blocks frequencies in a specified band (abbr.)
60. Term used to interrupt a conversation on a repeater to indicate that there is an emergency or urgent message
61. Society of Civil and Structural Engineers (abbr.)
62. Describes when a synchronous motor loses phase lock
64. _____ factor, the peak-to-average waveform value
65. Log onto a hard drive
66. 1/000 of an amp (abbr.)
68. Ratio of circumference to diameter
70. Proportion of two numbers
72. Centimeter (abbr.)
74. Miniature threaded RF connector
75. Test document for verifying proper function (acr.)
77. 3 GHz to 30 GHz
79. Internet address (abbr.)
80. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (acr.)
81. Current-voltage phase mnemonic
84. Chemical symbol for zirconium
85. Chemical symbol for calcium

Answer below

 

2015 Crosswords Archive
| 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 |
December 27
December 20
December 13
December 6
November 29
November 22
November 15
November 8
November 1
October 25
October 18
October 11
October 4
September 27
September 20
September 13
September 6
August 30
August 16
August 9
August 2
July 26
July 19
July 12
June 21
May 3
April 5
March 8
March 1
February 22
February 8
January 25
January 18
January 11
January 4

 

 

 

 

 

 

 

 

 

 

 

 

Engineering Crossword Puzzle Solution for October 4, 2015 - RF Cafe