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RF Cafe Engineering & Science Crossword Puzzle
February 24, 2019

Beginning in 2000, I have created hundreds of custom technology-themed crossword puzzles 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

RF Cafe Engineering & Science Crossword Puzzle February 24, 2019

1. Computer messaging service (pl.)
5. Cable television (abbr.)
9. Very large unit of apparent power (abbr.)
10. Part of this website's title
11. Type of inductance found in transformers
13. A common battery cell size
14. RF connector type
15. Amateur Teleprinter Over Radio (abbr.)
16. Amateur radio abbreviation for the Oceania region (abbr.)
18. RF ____, the world's best engineering website
19. Mate to a TX
20. Chemical symbol for manganese
21. Chemical symbol for cadmium
22. Unit of time (abbr.)
23. A vector quantity (typically a complex number) representing a sinusoidally varying current or voltage (pl.)
26. Precision approach radar (abbr.)
29. Local Oscillator (abbr.)
30. The "E" in EMF
33. Chemical symbol for silicon
34. Type of data conversion device (abbr.)
36. Joins together
40. Frequency Division Duplex
42. Gun safety and education organization (abbr.)
43. Conduction of electricity across the surface of a dielectric
45. Half of DSB
47. Max or min voltage of a waveform (abbr.)
50. Linear operation area of transistor curve (2 wds. pl.)
53. PC follower
55. Keyboard key
56. Prevent the direct physical transfer of signals from one point to another
58. Filter type that blocks frequencies in a specified band (abbr.)
59. Network department (abbr.)
60. Chemical symbol for zinc
61. Electromagnetic (abbr.)
62. The Wright Flyer had an upper one and a lower one
63. Infrared (abbr.)
64. Ethoxyethane
67. Mr. de Forest's first name
68. European equivalent to the U.L.
69. Unit of current
71. One port of an amplifier
72. Electrical overstress (abbr.)
74. Multiprotocol Label Switching (abbr.)
75. Electric coronal discharge (pl.)
1. 1.602E-19 Joules
2. Join a male and a female connector
3. International Reply Coupon (abbr.)
4. 30 kHz to 300 kHz
5. Describes the action of cleaving a crystal plane
6. Molecular building blocks
7. Another word for each complete winding of an inductor
8. Unit of apparent power (abbr.)
9. Stephen ____ - popular author on microwave circuit design
11. Unit of length (abbr.)
12. On a waveform, a _____ min or max
13. An angle that has less than 90 degrees
15. RF IC manufacturer located in Dübendorf, Switzerland
17. Optical storage medium
19. Chemical symbol for radium
24. Paper printout of a document (pl. 2 wds.)
25. Time to spend your 401k plan
27. Small representative graphic
28. Large unit of apparent power (abbr.)
31. Unix, Linux or Windows (abbr.)
32. Erbium Doped Fiber Amplifier (abbr.)
35. CDMA Development Group (abbr.)
36. Cyanide (abbr.)
37. Type of logic gate (pl.)
38. American space agency (abbr.)
39. Chemical symbol for scandium
41. Morse Code for "from"
44. Set of poles
46. Digital pattern coding type
48. Kilovolts (abbr.)
49. Half of the diameter (pl.)
51. Swiss mathematician who extensively studied complex numbers
52. Sudden, short-lived increase in voltage or current
54. Trans European Trunked RAdio
56. Microprocessor vendor
57. Modulation type (abbr.)
58. Low- to mid- frequency connectors
60. Antenna type derived from simple weighted wires dropped from Zeppelin airships
62. 5 work days
65. Stock symbol for Harris Communications
66. BS__ - the degree held by many RF Cafe visitors
67. Low Noise Amplifier (abbr.)
70. Unit of length (abbr.)
71. Internet protocol (abbr.)
73. Unix, Linux or Windows (abbr.)

See solution below


2019 Crosswords 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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RF Cafe Engineering & Science Crossword Puzzle Solution February 24, 2019

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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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