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Science Crossword Puzzle
October 11, 2015

This week's custom crossword puzzle contains only words with relevance to science, engineering, mathematics, chemistry, astronomy, mechanics, etc. Since each puzzle is created personally by me, I usually insert a few special words and clues. This week, the company names of my two newest advertisers* are buried somewhere in the matrix. Enjoy!

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

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

Science-Themed Crossword Puzzle for October 11, 2015 - RF Cafe

Note: A standard for crossword puzzles is when all words in a clue are capitalized, the solution is the abbreviation or acronym for that clue; e.g., Alternating Current = AC.

2. ___-___ + 28 Down, manufacturer of attenuators, terminations, resistors, and diode detectors*

5. Leading and trailing edge frequency variation of a CW pulse

8. Vacuum tube grid placed between control grid and plate in a pentode

13. Constellation : The lion

15. Chemical symbol for molybdenum

16. Keyboard key

18. Oscillator type that is referenced to an external source (abbr.)

21. Chemical symbol for arsenic

22. Lubricant

24. Modulation type (acr.)

25. Chemical symbol for platinum

27. Miniature RF connector (pl.)

29. Frequency Division Duplex

31. Increase voltage linearly

33. Switch position

35. Chemical symbol for nickel

36. ____ + 32 Down, manufacturer of ferrite circulators and isolators*

38. Multifunctional silicon devices (abbr.)

39. Referring to a right triangle, the trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse (pl.)

41. Chemical symbol for nickel

42. Length times width

44. Surface Mount Technology

45. Type of data conversion device (abbr.)

46. Ham's code for "Your net frequency is Low."

47. World's largest yearly convention of gadget and device manufacturers (abbr.)

48. Carrier-to-noise ratio (abbr.)

49. A common RS-232 serial bus command (abbr.)

50. Complex Instruction Set Computer

53. "Microwaves & __" magazine

55. Telex-Over-Radio (abbr.)

56. Chemical symbol for argon

57. Amplifier vendor in Palm Bay, FL, now part of Spectrum Microwave

60. Chemical symbol for scandium

61. Engineer's blood plasma

62. Electrically Alterable Read Only Memory

63. Sound frequency in the human hearing range (acr.)

64. General Mobile Radio Service (abbr.)

66. Weight (abbr.)

67. Rádio Nacional de Angola (abbr.)

68. Pure carrier (abbr.)

69. Microwaves & RF magazine (abbr.)

71. Enhanced Graphics Adapter

72. Direct Memory Access (abbr.)

73. Printer output resolution unit (abbr.)

75. Official Space Shuttle designation (abbr.)

77. Stock symbol for Advanced Micro Devices

78. Innovative Power Products, Holbrook, NY (abbr.)

80. Radio signal route

83. 300 Hz to 3 kHz in audio (abbr.)

85. Microprocessor vendor

87. 1.602E-19 Joules

88. Move in a raster pattern

91. Chemical symbol for ruthenium

93. Type of current

94. 6th Greek letter

96. World's first satellite navigation system, abbr.

97. Moon of Saturn discovered in 1672

99. Chemical symbol for scandium

100. Chemical symbol for aluminum

101. Switch position

103. Semiconductor and calculator company (abbr.)

104. Attenuator

106. 300 MHz to 3 GHz

107. Chemical symbol for dysprosium

109. Exponent that returns the original number

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

111. Software description of an electronic component

112. Part of an optical cable bundle (pl.)

1. Area on a shaft for accommodating a setscrew (pl.)

2. Read-only (abbr.)

3. Home state of Los Alamos lab (abbr.)

4. Electrical overstress (abbr.)

5. Chemical symbol for chlorine

6. Integrated Services Digital Network (abbr.)

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

9. Common shorthand reference for a capacitor

10. Type of flip-flop

11. Chemical symbol for nobelium

12. Short video segments

14. Electromagnetic (abbr.)

16. Relative power level unit (abbr.)

17. Chemical symbol for einsteinium

19. Chemical symbol for lawrencium

20. Computer communication scheme (abbr.)

23. One port of an amplifier

25. Chemical symbol for polonium

26. Boob tube (abbr.)

28. 2 Across + _________, manufacturer of attenuators, terminations, resistors, and diode detectors*

29. Passing certain frequencies and blocking others

30. Reduces in amplitude

32. 36 Across + _________, manufacturer of ferrite circulators and isolators *

33. Type of logic gate

34. Chemical symbol for neon

36. Negative temperature coefficient (abbr.)

37. Type of data conversion device (acr.)

39. Chemical symbol for tin

40. Chemical symbol for selenium

42. Automatic repeat request used in AMTOR (abbr.)

43. Logic family

51. FCC Part 15 rules apply in this band (abbr.)

52. Special diode type that can be switched (abbr.)

54. Fast Fourier transform (abbr.)

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

58. Bulk Acoustic Wave (acr.)

59. Discipline for aircraft navigation in low visibility environments (abbr.)

64. Key feature in a high level overvoltage protection device

65. Synchronous Digital Hierarchy

69. Lowest power level capable of being demodulated (abbr.)

70. Heatsink feature

71. Type of reconfigurable memory (abbr.)

74. Ratio of circumference to diameter

76. Chemical symbol for thallium

79. Compliment to a zero in a polynomial (pl.)

81. Analog-to-Digital (abbr.)

82. Coefficient of temperature (abbr.)

84. Network file transfer protocol (abbr.)

86. Attenuator topology (hyph.)

87. 30 GHz to 300 GHz

89. Chemical symbol for cesium

90. Type of current flow (abbr.)

92. Unit of capacitance (abbr.)

94. IC socket type for easy insertion & removal (abbr.)

95. A common battery cell size

97. Chemical symbol for rhodium

98. Ticker symbol for Analog Devices

100. Army-Navy specification prefix (acr.)

102. Chemical symbol for francium

103. Chemical symbol for tantalum

105. Decimeter (abbr.)

106. Electrical safety organization (abbr.)

108. Chemical symbol for ytterbium

109. Unix, Linux or Windows (abbr.)

See solution below


2015 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-Themed Crossword Puzzle Solution for October 11, 2015 - RF Cafe

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