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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 tying 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 Science & Engineering Crossword Puzzle
April 5, 2020

Working crossword puzzles can be contagious. This April 5, 2020, tech-themed crossword puzzle may even go viral. It contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc., which I have personally built over nearly two decades. That includes the cause for our planet's current dilemma. Many new words and company names have been added that had not even been created when I started in the year 2002. 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 April 5, 2020 - RF Cafe 

<click for full size to print>

1. Set of three-letter codes which are used by amateurs as abbreviations, hyph.
6. Unlicensed radio type for personal and business use (abbr., pl.)
9. Describes 99 Across
15. Coordinated Universal Time (abbr.)
16. Country of origin for this current 45 Across
18. Official engineering change document (abbr., pl.)
20. Chemical symbol for einsteinium
21. 2-way conversation, Ham term
23. Ham's code for "Shall I increase power?"
24. Common average used for sinewaves (abbr.)
25. Voltage-Controlled Oscillator (pl.)
26. Part of a FOR loop
28. Data transmission pathway
30. Printer output resolution unit (abbr.)
32. Having power applied (slang)
33. Fast-Scan TV
34. Electronic Variable Optical Attenuator (abbr.)
37. Unit of weight
39. Cause EM signals to disperse randomly
43. Chemical symbol for neon
44. Chemical symbol for lithium
45. Describes a highly infectious agent of destruction like 99 Across
48. Shuttle Amateur Radio EXperiment
50. Chemical symbol for tantalum
52. Akin to an EE, CE, AE, etc.
53. Type of data conversion device (abbr.)
54. Shorthand for oxygen
56. Chemical symbol for praseodymium
57. Online service
59. Logarithmic ratio (abbr.)
62. Chemical symbol for thallium
64. Number that is divisible only by itself and 1
67. Early instrument for measuring the positions of the heavenly bodies
71. Internet protocol (abbr.)
73. 1.602E-19 Joules
74. Introduce unintended amplitude changes
76. Chemical symbol for beryllium oxide
77. Nearest and furthest points to the center of gravitational attraction for a body in orbit
78. RF computer network
79. Exponent that returns the original number
80. Gallium nitride chemical symbol
82. Rádio Nacional de Angola (abbr.)
84. Electrical safety organization (abbr.)
85. Key feature in a high level overvoltage protection device (pl.)
87. Ham's code for "Your net frequency is High."
90. Non-return to zero (abbr.)
91. Automatic network analyzer (abbr.)
92. Filter type that blocks frequencies in a specified band (abbr.)
93. Teflon (abbr.)
95. A sudden and temporary increase in voltage, current, or power
98. Beat frequency oscillator (abbr.)
99. Original name for 19 Down + "-19" (2 wds.)
100. Ham's code for "Shall I send more slowly?"
101. Electromagnetic wavelength unit
1. International phonetic alphabet letter "Q"
2. Official Space Shuttle designation (abbr.)
3. Multifunctional silicon devices (abbr.)
4. Transportation accident investigation agency (abbr.)
5. Chemical symbol for lawrencium
6. Divides the signal into pieces
7. Chemical symbol for bismuth
8. Signal-to-noise ratio (abbr.)
10. Type of current flow (abbr.)
11. Digital Enhanced Cordless Telephone
12. Engineering Change Order (abbr.)
13. Semiconductor device type (abbr.)
14. Network department (abbr.)
16. Error checking scheme (abbr.)
17. Modulation type (abbr.)
19. _____ + "-19"
22. Release volatile products from a liquid coating such as paint
25. Aircraft navigation system (abbr.)
26. Logic family (abbr.)
27. Type of optical network
29. Small DIP package (abbr.)
31. Multifunctional silicon devices (abbr., pl.)
32. Base 16 number system (abbr.)
35. Volt-ohmmeter (abbr.)
36. PC follower
38. Chemical symbol for nobelium
40. A common battery cell size
41. Total radiated power (abbr.)
42. Prefix meaning ground or earth
46. Analog-to-Digital (abbr.)
47. Logical gate type (pl.)
49. ______ + 61 Down, cause of the current global 9 Across
51. Change connector type
55. Transmit Incremental Tuning (abbr.)
57. Automatic Testing, Evaluation & Reporting (abbr.)
58. Local Oscillator (abbr.)
60. Early predecessor to an online forum (abbr.)
61. Submicroscopic infectious agent that replicates only inside the living cells of an organism
63. One component of volume
64. Type of chart
65. Chemical symbol for molybdenum
66. Unit of energy
68. Chemical symbol for antimony
69. Chemical symbol for lanthanum
70. Type of reconfigurable memory (abbr.)
72. Oscillator type that is referenced to an external source (abbr.)
74. The system than converts common website names to IP addresses (abbr.)
75. L-C resonating circuits
79. Circuit path with very high or infinite impedance
81. The design component of total product cost (abbr.)
83. Boolean expression (pl.)
86. Colorado Springs military school (abbr.)
88. Unit of time (abbr.)
89. Stock symbol for Hewlett Packard
92. Beat frequency oscillator (abbr.)
93. Chemical symbol for plutonium
94. Chemical symbol for chlorine
96. Infrared (abbr.)
97. Chemical symbol for tin
98. Filter type that blocks frequencies in a specified band (abbr.)

See solution below


2020 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 Solution April 5 - RF Cafe

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