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Technical Theme Crossword Puzzle
October 10th, 2021

This Technical Themed Crossword Puzzle for October 10th has many words and clues related to... you guessed it... engineering - including RF, microwave, optics, mathematics, chemistry, physics, and other technical subjects. As always, this crossword puzzle 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., Hedy Lamarr or the Bikini Atoll). 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

Engineering-Theme Crossword Puzzle for October 10th, 2021 - RF Cafe


1. CB slang for policeman

4. Mathematical calculation of RF component string (2 wds.)

15. Chemical symbol for tantalum

16. Frequency division multiple access (abbr.)

17. Chemical symbol for praseodymium

18. Automatic Testing, Evaluation & Reporting (abbr.)

20. Another name for a test lead

22. An efficient microstrip corner shape

24. Mr. de Forest's first name

25. Part of a FOR loop

26. Filter type that blocks frequencies in a specified band (abbr.)

27. Describes a region on a semiconductor that has a linear and symmetric I-V curve

29. Early operating system (still popular)

31. Morse Code for "from"

32. Stock symbol for Yahoo

34. Type Mylar airframe structure covering (2 words)

38. Electromagnetic (abbr.)

39. Part of a male connector

40. Automatic Packet Position Reporting System (abbr.)

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

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

44. Chemical symbol for tantalum

45. Converts electrical energy into mechanical energy

46. Chemical symbol for einsteinium

47. Chemical symbol for gallium

49. Unit of time (abbr.)

51. Chemical symbol for dysprosium

53. Mathematical quantity with magnitude, but no direction

55. Left a film on the surface

57. Software layer that allows a system to be programmed via a defined set of commands (abbr.)

59. Abruptly limit the amplitude of a signal

61. Its chemical symbol is O

63. Internet mail protocol (abbr.)

66. Opposite of I.D.

68. 1000 ohms

72. Max or min voltage of a waveform (abbr.)

73. Chemical symbol for erbium

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

76. Chemical symbol for radon

78. A common battery cell size

80. Form/fit/function replacement

81. Schema for computer or device presentation to the operator (abbr.)

82. Apple's popular media playing device

83. Spurious signal produced in a receiver

85. The Wright Flyer had an upper one and a lower one

87. International Reply Coupon (abbr.)

88. A variation of the quad antenna having triangular elements (2 wds.)

92. Irradiated cosmic gas

96. Type of component package (abbr.)

98. Intermodulation (abbr.)

99. ampere-hour (abbr.)

100. Multifunctional silicon devices (abbr.)

102. Sudden, short-lived increase in voltage or current

105. CPS

106. Nordic Mobile Telephone

108. Facility where semiconductors are manufactured

109. Antenna type derived from simple weighted wires dropped from Zeppelin airships

111. Unit of resistance

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

113. Solid figure that has every point on its surface equidistant from its center

115. Nuclear explosion byproduct harmful to electronic (abbr., pl.)

116. PC follower

117. ____ earth elements

119. Pick-and-_____ automated PCB component insertion tool

122. Part of this website's title

123. Intermodulation (abbr.)

124. Digital pattern coding type (abbr.)

125. Adjusts

130. Its chemical symbol is Fe

131. Technical drawing structure

133. 1.602E-19 Joules

135. Megohm (abbr.)

136. Chemical symbol for neon

137. Large-value resistor connected across the filter capacitor in a power supply to discharge the filter capacitors when the supply is turned off (2 wds.)

138. Total Access Communication System (abbr.)

1. PNPs and NPNs

2. Basic element

3. Half of the diameter (pl.)

4. Airflow rate (abbr.)

5. Ticker symbol for Analog Devices

6. Surface Mount Technology

7. Software engineering tool (abbr.)

8. Type of current

9. Highest point

10. The design component of total product cost (abbr.)

11. Heat required to change a solid into a liquid or a liquid into a gas without change of temperature

12. Elemental compound used for microwave frequency reference oscillators (abbr.)

13. Chemical symbol for selenium

14. Infrared (abbr.)

19. Describes two or more satellites configured to communicate between themselves

21. Chemical symbol for rhodium

23. Chemical symbol for ruthenium

24. International phonetic alphabet letter "L"

26. Drill a hole

28. Error checking scheme (abbr.)

30. S-Parameter measurement instrument (2 wds.)

31. Basic PN junction component

32. 36 inches

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

35. Applied too large of a signal

36. Chemical symbol for neodymium

37. Front end of a rocket

39. Related to FM by a differential

42. Early computer display screen resolution (abbr.)

48. Chemical symbol for aluminum

49. User Datagram Protocol

50. Chemical symbol for lithium

52. Yttrium Aluminum Garnet

54. Type of current flow (abbr.)

56. Like RFCafe.com (2 wds.)

58. Peak envelope power (abbr.)

60. Opposite of O.D.

62. First man to orbit the earth - ____ Gagarin

63. Additive used to reduce a mixture's volatility (pl.)

64. Test equipment (abbr.)

65. Another name for a test lead

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

69. Network department (abbr.)

70. Numerical basis for decibels (abbr.)

71. Type of logic gate

74. Read-only (abbr.)

75. Semiconductor and calculator company (abbr.)

77. Chemical symbol for neptunium

79. Powers pneumatic devices

81. Schema for computer or device presentation to the operator (abbr.)

84. Effective frontal area presented to a microwave interrogation system (abbr.)

85. Unit of typing speed (abbr.)

86. Electronics manufacturer with "meatball" logo

89. Base of the octal number system

90. Chemical symbol for thulium

91. Applies a lubricant

93. Stock symbol for Boeing

94. 300 MHz to 3 GHz

95. Surrounding environmental conditions

97. Million samples per second

101. Counter ElectroMotive Force (abbr.)

103. Moved from cell to cell

104. Electromagnetic (abbr.)

105. Part of a screw that engages the driver

106. Unit of inductance (abbr.)

107. Total radiated power (abbr.)

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

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

117. An abbreviation for "receiver"

118. Radio signals from the cosmos (abbr.)

120. Length times width

121. Chemical symbol for cobalt

123. U.K. equivalent of the IEEE

124. Digital transmission figure of merit (abbr.)

126. Common average used for sinewaves (abbr.)

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

128. Unit of admittance

129. Specialized mobile radio (abbr.)

131. Chemical symbol for thallium

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

134. 1,000 seconds (abbr.)

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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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.

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Technical Theme Crossword Puzzle Solution for October 10th, 2021 - RF Cafe

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