Take 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.
A cruciverbalist is a person who is skilled at creating or solving crossword
puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and
"verbalist" from "verbal," indicating a person who deals with words.
cruciverbalists are often responsible for designing
crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and
the techniques used in constructing and solving crosswords. They aim to make puzzles
that are both challenging and enjoyable for crossword enthusiasts.
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
ACROSS
DOWN
1. Ionized trails of meteors used as a reflecting media (2 wds.) 9. 3 GHz
to 30 GHz 11. Flash caused by an electric current ionizing a gas or vapor 12. Chemical symbol for
thallium
13. Bandwidth (abbr.) 15. Special diode type that can be switched (abbr.) 18. Chemical symbol for
arsenic
20. Chemical symbol for aluminum 21. Filter type that blocks frequencies in a specified band (abbr.) 23.
Ad-hoc on demand distance vector (abbr.) 26. Ratio of circumference to diameter 27. Periodic
superimposed waveform amplitude variation 30. "Texting" (abbr.) 32. 2/3 of a triac 34. Modulation
technique (abbr.) 35. Type of high frequency circuit substrate (abbr.) 36. Adjust 38. MS's
server-side script engine for dynamically-generated web pages (abbr.) 40. The "O" in ROM 41.
International phonetic alphabet letter "G" 42. Mr. de Forest's first name 43. Longitudinal shape-forming
structural element
45. Battery cell chemistry type (abbr.) 47. Coordinated Universal Time (abbr.) 48. Thread cutting tools
51. Engineering Change Order (abbr.) 52. Limits voltages 54. Unit of time (abbr.) 55. Frequency
division multiple access (abbr.) 57. Time delay (abbr.) 58. Chemical symbol for einsteinium 59. Akin
to an EE, CE, AE, etc. 61. ___-AZIMUTH telescope mount 63. Home state of Los Alamos lab (abbr.) 65.
Chemical symbol for lutetium 66. Negative temperature coefficient (abbr.) 69. Electrical overstress
(abbr.) 70. The common connection for all parts of a circuit that connect to the negative side of the power
supply (2 wds.)
2. Chemical symbol for tantalum 3. Chemical symbol for erbium 4.
Ovenized crystal oscillator (abbr.) 5. Removed insulation from a wire 6. Chemical symbol for chlorine
7. Chemical symbol for terbium 8. Modern battlefield technique (abbr.) 9. That which has mass and
occupies space (pl.)
10. Start frequency (abbr.) 14. Electrical terminal, normally left unconnected at one end (pl.) 16.
Chemical symbol for calcium 17. Unit of length equal to 5.5 yards 18. Cable covered by strong jacket
19. Chemical symbol for silicon 20. Circuit for maintaining constant voltage (abbr.) 22. Specialized
mobile radio (abbr.)
24. Reflection where light arriving from a single direction is reflected in a many different directions 25.
Unit of apparent power (abbr.) 28. Oscillator type that is referenced to an external source (abbr., pl.)
29. Positively doped silicon 31. Greek letter, used to indicate summation 33. Issac Newton's
mathematical contribution 37. Megohm (abbr.) 39. Chemical symbol for selenium 44. Logic family 46.
Precision landing system (abbr.) 49. Band between RF and BB 50. Miniature threaded RF connector 53.
Related to FM by a differential 56. Chemical symbol for aluminum 60. Signal-to-noise ratio (abbr.)
62. Test equipment (abbr.)
63. Unit of inductance (abbr.) 64. 1/000 of an amp (abbr.) 65. Chemical symbol for lithium 67. Part
of a FOR loop 68. Chemical symbol for copper
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 lady's voice announced "You've Got Mail"
when a new message arrived...
Copyright 1996 - 2026
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.