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Science & Engineering Crossword Puzzle

September 2, 2012

2012 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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A cruciverbalist is a person who is skilled at creating or solving crossword puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and "verbalist" from "verbal," indicating a person who deals with words. cruciverbalists are often responsible for designing crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and the techniques used in constructing and solving crosswords. They aim to make puzzles that are both challenging and enjoyable for crossword enthusiasts.

December 30

December 23

December 16

December 9

December 2

November 25

November 18

November 11

November 4

October 28

October 21

October 14

October 7

September 30

September 23

September 16

September 9

September 2

August 26

August 19

August 12

August 5

July 29

July 22

July 15

July 8

July 1

June 24

June 17

June 10

June 3

May 27

May 20

May 13

May 6

April 29

April 22

April 15

April 8

April 1

March 25

March 18

March 11

March 4

February 26

February 19

February 12

February 5

January 29

January 22

January 15

January 8

January 1

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

Science & Engineering Crossword Puzzle for 9/2/2012 - RF Cafe


1. Part of a closed-loop system (pl.)

7. Current-voltage phase mnemonic

10. Binary Coded Decimal

13. Tough drill bit material

18. Morse Code for "from"

19. Cable termination type

20. Type of data conversion device (abbr.)

21. Chemical symbol for europium

22. Start frequency (abbr.)

23. Unit of length (abbr.)

24. Imaging device (abbr.)

27. High-speed logic family

29. 1/000 of an inch

31. Electromagnetic interference (abbr.)

34. Chemical symbol for argon

35. Color quality

37. Display type

39. Short for modulator/demodulator (pl.)

41. Global System for Mobile Communications (abbr.)

43. Centimeter (abbr.)

44. A concern of Boolean equations

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

48. Chemical symbol for dysprosium

49. Chemical symbol for helium

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

52. Slow flow of metal when under high temperature or great pressure

53. A feedback scheme to level out the receiver audio volume (abbr.)

55. 2/3 of a triac

58. 300 kHz to 3 MHz

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

61. Plural of locus

64. 2 x SSB

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

67. Effect (named after its discoverer) that is the variation in the width of the base in a BJT due to a variation in the applied base-to-collector

69. International Amateur Radio Union (abbr.)

70. PC follower

71. Type of current

73. Type of microwave diode

74. 360 degrees of phase rotation

76. Stock symbol for Lockheed Martin

78. International Reply Coupon (abbr.)

80. Automated universal inductance tester - watch that 3rd letter, (abbr.)

81. Front edge of a wing (abbr.)

82. Infrared (abbr.)

83. Have a positive phase wrt a reference

85. Type of data conversion device (abbr.)

87. International phonetic alphabet letter "D"

88. 3 MHz to 30 MHz

90. Band between RF and BB

91. Filter type that blocks frequencies below and above a specified band (abbr.)

93. Mr. de Forest's first name

95. Ratio of output to input power, voltage, current, light, etc. (pl.)

97. Chemical symbol for lanthanum

99. Unit of admittance

101. What current is said to do, past tense

103. Type of computer display (abbr.)

104. Satellite TV system

105. A BPF specification (abbr.)

106. Last statement in a BASIC program

108. Colorado Springs military school (abbr.)

109. Singulated piece of IC wafer

112. U.K. equivalent of the IEEE

113. 1/6 inch printer's measure

115. Chemical symbol for cadmium

116. Logarithmic ratio (abbr.)

118. Amateur Radio Association (abbr.)

120. Amateur radio enthusiast

122. Chemical symbol for californium

123. Having a small magnitude for S21 (2 wds.)

124. Unit of energy

125. Computer "brain" (abbr.)

126. BNC, SMA, N, or 7/16


1. Frequency Division Duplex

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

3. Troubleshooting software

4. Chemical symbol for aluminum

5. Mr. Piper's famous yellow airplane

6. Mass unit (abbr.)

7. Opposite of O.D.

8. Software engineering tool (abbr.)

9. ECM response

11. European equivalent to the U.L.

12. Type of load used in place of an antenna during transmitter testing

13. Curly-Q type light bulb (abbr.)

14. Chemical symbol for arsenic

15. Graphics file types

16. Decimeter (abbr.)

17. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)

24. Capable of being cascaded

25. Chemical symbol for chromium

26. Cellular Digital Packet Data

28. Numerical basis for decibels (abbr.)

30. Network department (abbr.)

32. Unit of frequency (archaic, abbr.)

33. A complex quantity that can describe either impedance or admittance

35. Communication between stations by reflecting the radio waves off of the ionosphere

36. Electronics Industry Association (abbr.)

38. Chemical symbol for chlorine

40. Erbium Doped Fiber Amplifier (abbr.)

41. Electronics manufacturer with "meatball" logo

42. 1/000 of an amp (abbr.)

44. One component of volume

45. A gaseous process that deposits insulating films or metal onto a wafer at elevated temperature (abbr.)

47. Part of an optical cable bundle

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

51. Integral of the magnetic vector field over a surface (pl.)

54. Certificate of Successful Completion of Examination (abbr.)

56. A common battery cell size

57. Wireless phone region

58. Steel, brass, aluminum, etc.

59. Constellation : The lyre

60. Person responsible for program spending (abbr.)

62. Chemical symbol for calcium

63. Indium phosphide

65. Word used in describing 2-D and 3-D object dimensions

68. Chemical symbol for lithium

72. Chemical symbol for copper

75. High power density battery chemistry (abbr.)

77. Akin to an EE, CE, AE, etc.

79. CDMA Development Group (abbr.)

81. 30 kHz to 300 kHz

84. Digital Enhanced Cordless Telephone

86. Software drafting tool (abbr.)

87. The system than converts common website names to IP addresses (abbr.)

89. Type of modulation (abbr.)

90. Galilean moon

91. One of many similar appendages of a fan

92. Semiconductor lamp

94. Chemical symbol for erbium

96. First name of a British scientist of falling apple fame

98. Army-Navy specification prefix

100. Control language used by Hewlett Packard printers, abbr.

101. Small unit of capacitance (abbr.)

102. 2/3 of a triac

105. Chemical symbol for iron

107. Keyboard key

108. Agilent's EE design software (abbr.)

110. Effective Radiated Power (abbr.)

111. ELI the ICE ___

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

114. Chemical symbol for molybdenum

115. Chemical symbol for cesium

117. Chemical symbol for bromine

119. Chemical symbol for gold

120. Chemical symbol for holmium

121. Chemical symbol for manganese

122. Chemical symbol for cobalt

See solution below

Science & Engineering Crossword Puzzle Solution for 9/2/2012 - 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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