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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 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 Engineering & Science Crossword Puzzle
March 25, 2018

Each week, for the sake of all avid cruciverbalists amongst us, I create a new technology-themed crossword puzzle using only words from my custom-created lexicon related to engineering, science, mathematics, chemistry, physics, astronomy, etc. You will never find among the words names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort. You might, however, see someone or something in the exclusion list who or that is directly related to this puzzle's theme, such as Hedy Lamar or the Bikini Atoll, respectively. Enjoy!

cruciverbalist: [noun] cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs 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 March 25, 2018

1. Ability to store a charge

9. Modulation type (abbr.)

10. Chemical symbol for molybdenum

11. Band between RF and BB

12. Computer monitor cable type (abbr.)

14. Image storage format

16. Unit of current

18. Computer messaging service

21. Opposite of a LO

23. Chemical symbol for polonium

24. The "R" in DRC in substrate layout (singular form)

25. Strong cable covering (pl.)

28. Audible emanation

30. Adjust a pot

31. Akin to WAC, only just in America

33. Transformer interwinding connection

35. Tall structures for antennas

37. Unit of time (abbr.)

38. RF computer network

40. Engineering Change Order (abbr.)

41. Country of RF Cafe's residency

43. Impenetrable physical barrier

44. Filter type that blocks lower frequencies (abbr.)

45. The tip of a PCB probe (pl.)

46. Miniature threaded RF connector

49. Type of digital filter (abbr.)

50. Positive voltage lead color

52. Strong cable covering

55. Energy at rest

57. Gigantic star in Cetus

58. 1.602E-19 Joules

60. Filter type that blocks upper frequencies (abbr.)

61. Threaded fasteners

62. Radio frequency interference (abbr.)

64. Unit of conductance

66. Type of logic gate (pl.)

68. Unit of frequency (archaic, abbr.)

69. Semiconductor and calculator company (abbr.)

70. European equivalent to the U.L.

71. Another name for peak-to-average ratio of a waveform (2 wds.)

1. Filter type with high rate of out-of-band attenuation (aka 'elliptic') (pl.)

2. Modulation type (abbr.)

3. Surrounding environmental condition (pl.)

4. Inductor

5. Software device for tracking elapsed time (pl.)

6. Colorado Springs military school (abbr.)

7. Chemical symbol for chromium

8. Enhanced Graphics Adapter

13. Graphics file extension

15. Particle which constitutes a single quantum of electromagnetic radiation

17. French mathematician Siméon-Denis _______

19. Elementary particle

20. Arithmetic Logic Unit (abbr.)

22. Infrared (abbr.)

26. Steel, brass, aluminum, etc.

27. O-scope time base action

29. 10E1 numerical prefix

32. Flash caused by an electric current ionizing a gas or vapor

34. A digital counter input line to establish an initial value

36. Between Mars and Saturn

37. Sets of poles

39. Chemical symbol for lanthanum

42. Semiconductor On Insulator (abbr.)

43. ESD protective apparel

44. Relationship of one wave motion to another when its frequency is a multiple of the other

47. 1/000 of an amp (abbr.)

48. It is the "P" in S2P

51. The "D" in DC

53. 1/000 of an inch

54. CRT electron beam scan type

56. Chemical symbol for thallium

59. Variable Frequency Oscillator

61. Electron beam particle

63. International Reply Coupon (abbr.)

65. International Microwave Symposium (abbr.)

67. Chemical symbol for strontium

70. Chemical symbol for cobalt

See solution below

2018 Crosswords Archive

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.