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RF Cafe Engineering & Science Crossword Puzzle
April 21, 2019

Since 2000, I have been creating 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 Easter Day, 2019

<click for full size to print>

1. A system of digital communication whereby information is transmitted in short bursts (2 wds.)
9. Amateur radio enthusiast
10. Unit of time (abbr.)
11. One type of electron spin
12. Mr. Piper's famous yellow airplane
14. Chemical symbol for aluminum
15. Chemical symbol for helium
17. __ + 28 Down - this website's name
18. Chemical symbol for tantalum
20. Reflected radar or sonar signal (pl.)
24. Attenuator (pl.)
27. U.S. military organization (abbr.)
28. 17 Across + ____, the world's best engineering website
30. Type of antenna (pl.)
32. The largest asteroid
33. Akin to an EE, CE, AE, etc.
34. Chemical symbol for neon
35. Association of North American Radio Clubs
40. Greek letter, used to indicate summation
44. One bit of a real number
45. Error checking scheme (abbr.)
47. This calculus operation yields voltage across a capacitor
48. Moves from cell to cell
50. BS__ - the degree held by many RF Cafe visitors
52. Intel x86 command for " jump if above"
53. Chemical symbol for lead
54. Local Oscillator (abbr.)
55. Common average used for sinewaves (abbr.)
57. Chemical symbol for magnesium
59. Chemical symbol for gadolinium
60. ELI the ICE ___
61. Emitting a radio wave
1. Programmable logic device (abbr.)
2. Modulation type (abbr.)
3. Sharp bend in I-V curve
4. Chemical symbol for einsteinium
5. Chemical symbol for ruthenium
6. Automatic Packet Position Reporting System (abbr.)
7. Multifunctional silicon devices (abbr.)
8. One port of an amplifier
9. A message to you for today's date, being the first Sunday after the first full moon occurring on or after the vernal equinox
13. Cell tower electronics
16. Unit of admittance (pl.)
19. CDMA Development Group (abbr.)
21. Chemical symbol for cadmium
22. Opposite of I.D.
23. Precision approach radar (abbr.)
25. A common battery cell size
26. Chemical symbol for silicon
28. European equivalent to the U.L.
29. Chemical symbol for iron
31. Miniature RF connector
32. World's largest yearly convention of gadget and device manufacturers (abbr.)
36. Chemical symbol for nickel
37. Feedback system used to maintain constant signal level (abbr.)
38. Chemical symbol for radon
39. Study for a test just before taking it
41. Opposite of O.D.
42. Image file format name extension
43. Chemical symbol for mendelevium
45. Chemical symbol for cobalt
46. Centimeter (abbr.)
48. Increase voltage linearly
49. Switch configuration (abbr.)
51. Nuclear explosion byproduct harmful to electronics (abbr.)
54. Be behind in phase
56. Chemical symbol for strontium
58. Chemical symbol for gallium
59. Chemical symbol for gallium
60. Chemical symbol for manganese

See solution below


2019 Crosswords Archive
Visit the Crossword Express website - RF CafeTake a break from the drudgery by trying 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 Easter Day, 2019

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    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 Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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