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Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
    Kirt Blattenberger,


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 World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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RF Cafe Engineering & Science Crossword Puzzle
June 30, 2019

Here is the last engineering- and science-themed crossword puzzle for June. These custom-made crosswords are done weekly for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs or works crosswords.

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

Engineering & Science Crossword Puzzle June 30, 2019 - RF Cafe

<click for full size to print>

1. Maximally flat group delay equation (2 wds.)
10. Type of current flow (abbr.)
11. __ + 16 Across, the world's best engineering website
12. Heatsink feature
13. Electrical safety organization (abbr.)
16. 11 Across + ____, the world's best engineering website
19. Semiconductor On Insulator (abbr.)
20. 1/000 of an amp (abbr.)
22. 1E6 nanoseconds
23. Moons of Jupiter
25. Stock symbol for Raytheon
26. Chemical symbol for neodymium
28. Filter type that blocks frequencies below and above a specified band (abbr.)
30. Special diode type that can be switched (abbr.)
32. An ellipse has two of them
33. Describes the movement of a spacecraft in space when there is no thrust from the engines
36. Chemical symbol for lead
39. Chemical symbol for arsenic
40. Boob tube (abbr.)
41. Minutes of Use (abbr.)
43. End of transmission (abbr.)
46. CDMA Development Group (abbr.)
48. Chemical symbol for neon
50. Elements of a scattering matrix
54. 1.602E-19 Joules
55. Temperature-compensated crystal oscillator (abbr.)
56. 10E-12 numerical prefix
57. Chemical symbol for cobalt
58. Engineer who experimented with extremely high voltages (2 wds.)
62. Chemical symbol for aluminum
63. Popular computer device interface (abbr.)
65. 36 in. (abbr., pl.)
66. Substrate for mounting components (abbr.)
68. Chemical symbol for rhodium
70. Test equipment (abbr.)
73. Chemical symbol for einsteinium
74. Bends electromagnetic energy
75. One factor of a polynomial
76. Current-voltage phase mnemonic
78. Chemical symbol for polonium
80. Unit of liquid measure (abbr.)
81. Type of logic gate
83. CRT, LCD, etc.
84. Chemical symbol for silver
86. Semiconductor and calculator company (abbr.)
87. Unit of liquid measure (abbr., pl.)
88. Temperature-compensated crystal oscillator
89. Max or min voltage of a waveform (abbr.)
91. Official Space Shuttle designation (abbr.)
94. Chemical symbol for helium
95. Chemical symbol for tantalum
97. Most distant point one can see by line-of-sight (2 wds.)
1. Stock symbol for Boeing
2. ECM response
3. The second-lowest region of the ionosphere found approximately 60 to 70 miles above Earth (1 ltr. + 1 wd, hyph.)
4. 30 kHz to 300 kHz
5. Unit of capacitance (abbr.)
6. Chemical symbol for nickel
7. Cyanide (abbr.)
8. Its chemical symbol is Fe
9. Greek letter used for frequency
14. Stock symbol for Lockheed Martin
15. Type of source used by a Norton equivalent circuit
17. MS's server-side script engine for dynamically-generated web pages (abbr.)
18. Very Long Baseline Interferometry (abbr.)
19. File menu option (pl.)
21. Instrument for measuring potential difference using a taut band indicator (2 wds.)
24. Internet protocol (abbr.)
27. Type of current
29. Fast Fourier transform (abbr.)
31. Angular speed unit
34. Chemical symbol for radium
35. A feedback scheme to level out the receiver audio volume (abbr.)
37. An elementary particle
38. Type of memory
42. One type of electron spin
43. Effect (named after its discoverer) that is the variation in the width of the base in a BJT due to a variation in the applied base-to-collector
44. Determines proper functionality
45. Filter type that blocks frequencies in a specified band (abbr.)
47. 10E1 numerical prefix
49. Official engineering change document (abbr., pl.)
51. A type of digital modulation (abbr.)
52. Electrical overstress (abbr.)
53. Satellite milieu
59. Network department (abbr.)
60. Type of data conversion device (abbr.)
61. Filter type that blocks upper frequencies (abbr.)
64. Notch type filter (abbr.)
67. Broadband Signal Intrusion (abbr.)
69. Stock symbol for Harris Communications
70. Temperature-compensated crystal oscillator (abbr., pl.)
71. Radio signals from the cosmos (abbr.)
72. Rocket first stage
75. One factor of a polynomial
77. "Calling any amateur radio station"
78. Chemical symbol for platinum
79. Ham abbreviation indicating contacts with all major land masses
82. Output intercept point (abbr.)
83. Microwave Theory and Techniques Society (abbr.)
85. BASIC program command
90. Kilovolts (abbr.)
91. Chemical symbol for antimony
92. Chemical symbol for thallium
93. Chemical symbol for selenium
94. Chemical symbol for holmium
96. Army-Navy specification prefix

See solution below


2019 Crossword Puzzle Archive

Visit the Crossword Express website - RF CafeTake 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.

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Engineering & Science Crossword Puzzle Solution June 30, 2019 - RF Cafe

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