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Science-Theme Crossword Puzzle
March 14, 2021

This Science-Theme Crossword Puzzle for March 14th has many words and clues related to... you guessed it... RF engineering - and mathematics, chemistry, physics, and other technical words. As always, this crossword contains no names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort unless it/he/she is related to this puzzle's technology theme (e.g., Hedy Lamarr or the Bikini Atoll). The technically inclined cruciverbalists amongst us will appreciate the effort. Enjoy!


Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Science-Theme Crossword Puzzle for March 14th, 2021 - RF Cafe

ACROSS DOWN
1. Summers

5. Logarithmic unit of voltage

9. Exponent that returns the original number

10. Switch position

11. Its chemical symbol is Ce

13. 1.602E-19 Joules

14. Line of Sight (abbr.)

15. Type of graph with a circular grid

16. Amateur radio abbreviation for the Oceania region (abbr.)

18. Wireless phone region

19. Part of a FOR loop

20. Chemical symbol for calcium

21. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)

22. Chemical symbol for strontium

23. Occlusion of one heavenly body by another

26. BER, 8 bits at a time

29. Morse Code for "from"

30. An amateur station transmitting communications for the purpose of observation of propagation and reception or other related experimental activities (2 wds.)

33. Chemical symbol for helium

34. Charged particle

36. Type of interference to stations on nearby frequencies due to overmodulation

40. Total radiated power (abbr.)

42. Electronics Industry Association (abbr.)

43. Curve produced when a cone is cut by an oblique plane which does not intersect the base (pl.)

45. Nordic Mobile Telephone

47. Unit of inductance (abbr.)

50. Semiconductor device that varies its transconductance according to light intensity

53. Chemical symbol for tin

55. Half of a DIP

56. Test equipment vendor

58. PC follower

59. Amateur radio abbreviation for the Oceania region (abbr.)

60. Chemical symbol for silicon

61. A BPF specification (abbr.)

62. Short for terminal

63. Last stage in a transmitter (abbr.)

64. Change connector type

67. Peripheral Component Interface (abbr.)

68. 1/000 of an amp (abbr.)

69. Impurity in a semiconductor

71. Chemical symbol for neodymium

72. ___-back transformer

74. Color code for the number 2 (pl.)

75. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)

1. Army-Navy specification prefix

2. Stock symbol for Dell Computer

3. Electrical overstress (abbr.)

4. Chemical symbol for radon

5. Keyboard key

6. Securing device

7. Gigantic star in Cetus

8. Volume unit (abbr.)

9. Radio term for indicating the end of a transmission segment

11. Chemical symbol for cobalt

12. Repositioned

13. Exalted-Carrier Single Sideband (abbr.)

15. The tip of a PCB probe

17. The largest asteroid

19. Chemical symbol for thallium

24. Alloy of copper and nickel which has an electrical resistance that barely changes with temperature

25. Orbiting communications platform (pl.)

27. Organization requiring 25 years of amateur service for membership, abbr.

28. Semiconductor On Insulator (abbr.)

31. ampere-hour (abbr.)

32. Logical negation (pl.)

35. The design component of total product cost (abbr.)

36. Chemical symbol for selenium

37. Part of a male connector

38. Light

39. One component of a complex number (abbr.)

41. Unit of time (abbr.)

44. Positive emitter-coupled logic (abbr.)

46. Amplifier linearity specification (abbr.)

48. Chemical symbol for holmium

49. Thin Shrink Small Outline Package (abbr.)

51. Change from the initial value due to instability

52. Radio-Electronics-Television Manufacturer's Association

54. Rechargeable battery type (abbr.)

56. Part of CAD

57. Coefficient of temperature (abbr.)

58. Branch of the armed forces

60. Fail-____ switch

62. Image file format name extension

65. Automatic Calibration System (abbr.)

66. Chemical symbol for platinum

67. Personal Digital Cellular

70. Chemical symbol for erbium

71. A measure of receiver quality (abbr.)

73. Front edge of a wing (abbr.)


See solution below

 

2021 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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Science-Theme Crossword Puzzle Solution for March 14th, 2021 - RF Cafe

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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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