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RF Engineering Crossword Puzzle
April 29, 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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November 11

November 4

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September 23

September 16

September 9

September 2

August 26

August 19

August 12

August 5

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July 22

July 15

July 8

July 1

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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.

ACROSS DOWN
1. Founder of the ARRL (3 wds.)

8. Largest broadcaster in the UK (abbr.)

9. Precision approach radar (abbr.)

10. Spurious RF products created by metal joints (abbr.)

12. Recovers the modulation from the RF signal

15. Measured a waveform at regular intervals

18. Ratio of circumference to diameter

19. Unit of inductance (abbr.)

20. Chemical symbol for thallium

21. Chemical symbol for einsteinium

23. SIP x 2

24. Telecommunications Information Network Architecture (abbr.)

26. Airfoil shapers

28. Common average used for sinewaves (abbr.)

30. Indium phosphide

32. Peak envelope power (abbr.)

33. Early computer display screen resolution (abbr.)

34. A common battery cell size

36. International Telecommunications Union

37. Chemical symbol for lanthanum

39. Impenetrable physical barrier

41. Key feature in a high level overvoltage protection device (pl.)

43. Chemical symbol for argon

44. Have a chemically induced effect

47. Unit of conductance (pl.)

49. A 2-dimensional surface

51. Thermocouple, photodetector, limit switch, for example

53. Measuring devices

54. Logical negation operator

55. Greek letter

56. Numerical basis for decibels (abbr.)

57. Very common network topology and protocol

62. Reduce in amplitude

65. Chemical symbol for nobelium

66. Type of data conversion device (abbr.)

67. U.S. military organization (abbr.)

68. Weight (abbr.)

69. Send information

71. Antenna effective area

73. End of Life (abbr.)

74. Semiconductor device type (abbr.)

76. Internet address (abbr.)

77. What is the name of the second series in the spectrum of hydrogen

83. The lowest region of the ionosphere found approximately 25 to 55 miles above Earth (hyph.)

88. Dilbert's female co-worker

89. Write software

93. Network device that takes commands from another similar device

94. Type of modulation (abbr.)

95. Sample-and-____

96. Official engineering change document (abbr., pl.)

98. Chemical symbol for chromium

99. Type of logic gate

101. Online service

102. Satellite TV system

103. 24 hours

105. Computer communication scheme (abbr.)

107. Ground fault interrupter (abbr.)

108. Mr. Dirac's first name

109. Internet addresses

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

111. Chemical symbol for iron

112. Chemical symbol for selenium

113. Front edge of a wing (abbr.)

114. Chemical symbol for cadmium

115. Turned on its axis

119. Substance that removes electrons from another reactant

123. Crystal filter type (abbr.)

124. International Microwave Symposium (abbr.)

126. Half of DSB

127. A receiver circuit consisting of a beat frequency oscillator and additional circuitry for enhanced reception of SSB signals (2 wds.)

1. Heterojunction Bipolar Transistor

2. Current-voltage phase mnemonic

3. A small circle whose center moves round the circumference of a larger one, used in the Ptolemaic system to describe the orbits of the planets

4. Chemical symbol for radium

5. Conduction of electricity across the surface of a dielectric

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

7. 1/000 of an inch

8. Chemical symbol for beryllium

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

12. Slang for Ursa Major and Minor

13. Tweaks a filter for the correct response

14. Uses a filter to predistort a transmit waveform

15. ESD protective apparel

16. Consequence of under sampling

17. Produces an equation from empirical data

18. Part of a male connector

22. Surface Mount Technology

23. Performing a calculus function

25. Internet protocol (abbr.)

27. Stock symbol for Boeing

29. Radio receiver scheme which beats or heterodynes a second radio frequency to the incoming radio signals

31. Wireless LAN

35. Aerodynamic opposition to thrust

38. Automatic Calibration System (abbr.)

40. Powers pneumatic devices

42. Automatic network analyzer (abbr.)

43. Arithmetic Logic Unit (abbr.)

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

46. Frequency

48. Akin to EEs, CEs, AEs, etc.

49. Send a wireless to an early hip-worn wireless device

50. Chemical symbol for neon

52. Device attached to an antenna mast which rotates it so that the antenna can point in different directions

53. "The father of rocketry"

58. Telex-Over-Radio (abbr.)

59. Stock symbol for National Semiconductor

60. High-speed logic family

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

63. Software engineering tool (abbr.)

64. Measure of source / load mismatch (abbr.)

70. Institute of Electrical and Electronics Engineers

72. Oscillator type that is referenced to an external source (abbr., pl.)

75. Large transmitting tube such klystron, magnetron

77. Region between semiconductor doping potentials

78. Chemical symbol for aluminum

79. Upward force generated by an airfoil

80. Wire diameter unit (abbr.)

81. Ham's code for "Are you busy?"

82. Type of data conversion device (abbr.)

84. Circuit for maintaining constant voltage (abbr.)

85. 36 inches

86. 1.602E-19 Joules

87. Refuse to absorb energy

89. Queried an input for changes

90. Radio term for an unconventional frequency separation between input and output frequencies (2 wds.)

91. ________ Time, how long a stepped signal takes to go from 10% to 90% of its full-scale value

92. Mathematical operation concerned only with the remainder when one number is divided by another

95. Artech _____, technical book publisher

97. Shuttle Amateur Radio EXperiment

100. Switch position

101. A common battery cell size

104. Ham-ese for Young Lady

106. Stock symbol for Advanced Micro Devices

116. Unix, Linux or Windows (abbr.)

117. Transformer interwinding connection

118. The Microwave Office software company (abbr.)

120. Digital storage oscilloscope (abbr.)

121. Automatic Send-Receive (abbr.)

122. Chemical symbol for niobium

125. Chemical symbol for mendelevium


See solution below

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