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Radio Theme Crossword Puzzle
June 6, 2021

For twenty years now, I have been creating weekly crossword puzzles for the education and enjoyment of the technically minded visitor like you. This Radio Theme Crossword Puzzle for June 6th 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 June 6th, 2021 - RF Cafe

1. Device for translating higher frequencies to lower frequencies (pl.)

10. Sound frequency in the human hearing range (abbr.)

11. Chemical symbol for einsteinium

12. Rate of a radar transmitter's output waveform (abbr.)

13. Unit of time (abbr.)

16. One type of electron spin

19. Unit of energy

20. Chemical symbol for lawrencium

22. Chemical symbol for manganese

23. Columns of rising hot air

25. Colorado Springs military school (abbr.)

26. __ + 32 Across is this website's name

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

30. Common average used for sinewaves (abbr.)

32. 26 Across + ____ is this website's name

33. The nearest star - Alpha ________

36. 1e3 uV

39. Unit of liquid measure (abbr.)

40. Unit of time (abbr.)

41. Chemical element abbreviated Sn

43. Facsimile

46. Antenna (abbr.)

48. Chemical symbol for tantalum

50. Flat type of multiconductor wire

54. Test equipment (abbr.)

55. Aerodynamic opposition to thrust

56. ISDN BRI channel

57. Infrared (abbr.)

58. Signal path with very high or infinite impedance

62. Chemical symbol for beryllium

63. 3 kHz to 30 kHz

65. Electrical overstress (abbr.)

66. Gun safety and education organization (abbr.)

68. Type of logic gate

70. Type of component package (abbr.)

73. Chemical symbol for argon

74. Element in front of the driven element in a Yagi or Quad antenna

75. Small Office/Home Office (abbr.)

76. A common battery cell size

78. Test equipment (abbr.)

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

81. Slang for transmitter and/or receiver

83. Diode type whose capacitance is controlled by a reverse bias

84. Unit of magnetic flux(abbr.)

86. Chemical symbol for silicon

87. ___-back transformer

88. International Amateur Radio Union (abbr.)

89. Ratio of circumference to diameter

91. Software drafting tool (abbr.)

94. Greek letter used for frequency

95. Chemical symbol for thulium

97. Antenna structure that connects directly to the feed line (2 wds., pl.)

1. 10E1 numerical prefix

2. Orthogonal frequency-division multiplexing (abbr.)

3. In the middle

4. Unix, Linux or Windows (abbr.)

5. Abbreviation for peak voltage

6. Chemical symbol for erbium

7. Microwaves & __ magazine

8. CB slang for CB radio or antenna

9. Chemical symbol for tin

14. Below ELF

15. A network of components used to partition current into certain levels at certain points (2 wds., pl.)

17. Exponent that returns the original number

18. Institute of Electrical and Electronics Engineers

19. Type of high-tech data gathering system (abbr.)

21. Another name for Morse code

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

27. Type of modulation (abbr.)

29. Wireless application protocol (abbr.)

31. Surface Mount Technology

34. Equalizer (abbr.)

35. Country of RF Cafe's residency

37. Constellation : The virgin

38. Cooling device

42. Chemical symbol for nickel

43. This is required to causes a change in the motion of a body

44. More than one XCVR

45. Chemical symbol for chlorine

47. Transportation accident investigation agency (abbr.)

49. Ham radio organization (abbr.)

51. The UK's largest defense electronics contractor (abbr.)

52. Unit of heat

53. The highest level Amateur Radio license rating,The "E" in EHF

59. Min-to-max voltage of a waveform (abbr.)

60. Charged particle

61. One port of an amplifier

64. BASIC looping keyword

67. Amateur Radio Association (abbr.)

69. Government program to bring electricity to farms (abbr.)

70. A type of capacitance or inductance

71. Chemical symbol for molybdenum

72. Its chemical symbol is Th

75. Adjusts a pot

77. Chemical symbol for aluminum

78. Coefficient of temperature (abbr.)

79. Abbreviation for "power"

82. Input intercept point (abbr.)

83. Family of ICs with a certain component density level (abbr.)

85. End-to-end joint

90. Opposite of O.D.

91. European equivalent to the U.L.

92. Army-Navy specification prefix

93. Morse Code for "from"

94. Chemical symbol for neon

96. 1E6 nanoseconds

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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Radio Theme Crossword Solution for June 6th, 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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