Radio Theme Crossword Puzzle
October 17, 2021

This Radio Theme Crossword Puzzle for October 17th 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

Radio Theme Crossword Puzzle for October 17, 2021 - RF Cafe

1. Linear operation area of transistor curve (2 wds.)

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

9. The cell band above DCN

11. Large loudspeaker designed primarily to reproduce low frequency audio signals (pl.)

15. Ham's code for "Station is leaving the net."

17. One port of an amplifier

19. Type of spread spectrum that does not use frequency hopping (abbr.)

20. A coherent monochrome light source

22. Type of flip-flop

23. Chemical symbol for scandium

24. Rotating disk

26. Intermodulation distortion (abbr.)

28. Graphics workshop software

30. Chemical symbol for scandium

31. Chemical symbol for ruthenium

32. A common battery cell size

33. Chemical symbol for terbium

35. Chemical symbol for thulium

37. BS__ - the degree held by many RF Cafe visitors

38. Prefix meaning "to squeeze"

40. Singulated piece of IC wafer

42. Continuous Tone Coded Squelch System (abbr.)

44. Part of this website's title

46. Type of logic gate

47. Number system which uses only the digits 0 to 7

49. Nearest and furthest points to the center of gravitational attraction for a body in orbit

51. Coefficient of temperature (abbr.)

52. "Texting" (abbr.)

53. Comic strip engineer

55. Polish a crystal to an exact frequency

57. Unit of inductance (abbr.)

58. Most distant point one can transmit / receive as limited by the curvature of the Earth (2 wds.)

2. Code for a type of electrical wire insulation (abbr.)

3. Apple's popular media playing device (pl.)

4. World's first satellite navigation system (abbr.)

5. Multifunctional silicon devices (abbr.)

6. Switch position

7. Inventor of an oscillator type named after him that incorporates a crystal (2 wds.)

10. Location in large installations where network cables, routers, network switches, punch panels, etc. are located for security and ease of maintenance (2 wds.)

12. International phonetic alphabet letter "O"

13. Start frequency (abbr.)

14. Chemical symbol for einsteinium

15. Amateur radio operators trade this with each other after making contact (2 wds.)

16. Chemical symbol for neon

18. Stock symbol for National Semiconductor

20. Front edge of a wing (abbr.)

21. Active Electronically Scanned Array (abbr.)

24. Unit of magnetic flux(abbr.)

25. Frequency unit

27. Recovers the modulation from the RF signal

29. Does a total memory transfer

34. Electron beam particle

36. He developed an alphabet composed of dots and dashes

39. Network department (abbr.)

41. Newest buzz phrase for ubiquitous remote control and monitoring of everything (abbr.)

43. Chemical symbol for chlorine

45. Enrico _____, nuclear physicist

48. Centimeter (abbr.)

49. Chemical symbol for aluminum

50. Chemical symbol for lead

53. Printer resolution abbreviation

54. Unit of frequency

55. Chemical symbol for lanthanum

56. Analog-to-Digital (abbr.)

See solution below

2021 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.

All of these crossword puzzles were created using the fabulous Crossword Express (now called "Magnum Opus") software.

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Radio Theme Crossword PuzzleOctober 17, 2021

Radio Theme Crossword Puzzle
October 17, 2021