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RF Engineering Theme Crossword Puzzle
March 28, 2021

This RF Engineering Theme Crossword Puzzle for March 28th has many words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. 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., Reginald Denny or the Tunguska event in Siberia). 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

Engineering-Theme Crossword Puzzle for March 28th, 2021 - RF Cafe

1. Astronomical distance of 3.26 light years

4. Having a single polarity

8. A common battery cell size

10. Greek letter

11. Shorthand for troposphere

13. Ham's code for "Are your receiving me badly?"

15. 10 Down + ____, the world's best engineering website

17. Trans European Trunked RAdio

18. Type of logic gate

19. An abbreviation for "receiver"

21. Network department (abbr.)

22. Internet protocol (abbr.)

23. Relating to any picture or visual information, from the latin word meaning "I see"

25. Microprocessor vendor

27. Chemical symbol for helium

28. File name extension for an ASCII file

29. Mr. Ohm's first name

32. Type of flip-flop

33. Chemical symbol for selenium

34. Chemical symbol for nobelium

35. National Television System Committee (abbr.)

37. Moving air

38. Unit of time (abbr.)

40. Chemical symbol for rubidium

41. Chemical symbol for tantalum

42. _____-Carlo analysis

43. End of transmission (abbr.)

44. Test equipment (abbr.)

45. First series in the spectrum of hydrogen

47. Log onto a hard drive

49. Last stage in a transmitter (abbr.)

50. Multifunctional silicon devices (abbr.)

51. Automatic Testing, Evaluation & Reporting (abbr.)

53. Chemical symbol for silver

54. "Peace Prize" endowment creator, who made his fortune on the discovery of dynamite

56. Most protruding part of planetary rings as seen from distance

59. Shortwave listener (abbr.)

61. Data transmission pathways

62. Last statement in a BASIC program

64. Radio Amateurs of Canada (abbr.)

66. Adjust two signal to be exactly equal

67. Unit of conductance

1. Type of programmable device (abbr.)

2. Solid figure that has every point on its surface equidistant from its center

3. Chemical symbol for calcium

4. Universal Asynchronous Transmit/Receive (abbr.)

5. Type of high frequency diode (abbr.)

6. Opposite of I.D.

7. Powers pneumatic devices

9. Automatic Testing, Evaluation & Reporting (abbr.)

10. __ + 15 Across, the world's best engineering website

12. Using a logical connection scheme for redundant power supplies

13. Ham's code for "Shall I decrease power?"

14. Man who invented the steam engine and after whom the unit of power is named (2 wds.)

16. Amateur Radio on the International Space Station (acr.)

17. Boob tube (abbr.)

18. Lubricant

20. Powerline based networking vendor based in Canada

23. Diode type whose capacitance is controlled by a reverse bias (pl.)

24. Type of current

25. Type Mylar airframe structure covering (2 words)

26. The "E" in ELF

30. Switch position

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

33. Chemical symbol for silicon

36. Chemical symbol for antimony

37. Unit of magnetic flux(abbr.)

39. Chemical symbol for tin

41. Frequency (pl.)

42. Equivalent of Windows on Apple products

43. Chemical symbol for europium

45. Be behind in phase

46. 60 seconds

48. Color code for the number 3

49. Programmable logic device (abbr.)

51. Active Electronically Scanned Array (abbr.)

52. Chemical symbol for thallium

55. Bit error rate tester (abbr.)

57. Chemical symbol for neodymium

58. Additive white Gaussian noise

60. 3-phase transformer configuration

63. Read-only (abbr.)

65. Chemical symbol for cesium

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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Engineering-Theme Crossword Puzzle Solution for March 28th, 2021 - RF Cafe

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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 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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