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Science Theme Crossword Puzzle
January 24th, 2021

This Science Theme crossword puzzle for January 24th contains only words and clues related to engineering, mathematics, chemistry, physics, and other technical words. 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., 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

Science Theme Crossword Puzzle for January 24th, 2021 - RF Cafe

ACROSS DOWN
1. PCB metal area where component leads attach

4. The "IP" in IP2 and IP3 (2 wds., pl.)

15. Chemical symbol for erbium

16. Type of data storage IC (abbr.)

17. One port of an amplifier

18. Early operating system (still popular)

20. Time Division Multiple Access

22. Control and monitoring board

24. U.S. Spectrum allocation agency

25. Test point (abbr.)

26. PCB mask exposing ray (abbr.)

27. Computer messaging service

29. International phonetic alphabet letter "E"

31. Chemical symbol for magnesium

32. Teflon (abbr.)

34. Electronics parts distributor in Newark, NJ

38. Chemical symbol for einsteinium

39. Finite Element Analysis (abbr.)

40. Adjacent Channel Power Ratio (abbr.)

41. Precision landing system (abbr.)

43. Deutsche Industrie Normenausschuss

44. Unit of time (abbr.)

45. Thin Shrink Small Outline Package (abbr.)

46. Chemical symbol for thallium

47. Centimeter (abbr.)

49. European equivalent to the U.L.

51. Analog-to-Digital (abbr.)

53. Amount of deviation from nominal and still being within specification

55. Processing a transmitter signal

57. Miniature threaded RF connector

59. 1E6 bits per second

61. Greek mathematician who wrote the book "Elements of Geometry"

63. RF engineer's degree

66. Read-only (abbr.)

68. What kind of nuclear reaction powers both the sun and a hydrogen bomb

72. Chemical symbol for lithium

73. Unit of liquid measure (abbr.)

74. Its chemical symbol is Th

76. Chemical symbol for tantalum

78. Switch position

80. The "D" in RFID

81. Infrared (abbr.)

82. Threaded tuning rod in a coil

83. Creating a corona

85. Move from cell to cell

87. Type of data conversion device (abbr.)

88. X-ray film image (pl.)

92. Device for matching antenna impedance to transmitter impedance (pl.)

96. 10E1 numerical prefix

98. PC follower

99. Chemical symbol for holmium

100. Type of current flow (abbr.)

102. Network device that takes commands from another similar device

105. Chemical symbol for manganese

106. Last statement in a BASIC program

108. Hub of the solar system

109. Junk e-mail

111. Period between radar transmitter's output waveform (abbr.)

112. Chemical symbol for scandium

113. Sudden, short-lived increase in voltage or current (pl.)

115. Tweak a filter for the correct response

116. Unix, Linux or Windows (abbr.)

117. Sends a message via Morse Code

119. One of the first commercial software spreadsheets, (w/123)

122. Chemical symbol for einsteinium

123. Electrical safety organization (abbr.)

124. Type of chart

125. Forms a resistor lead

130. High power density battery chemistry (abbr.)

131. Mr. Gauss' first name

133. S12 or S21 (abbr.)

135. Monolithic microwave integrated circuit (abbr.)

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

137. Instrument for measuring potential difference using a taut band indicator (2 wds.)

138. Type of passive tag used for product verification (abbr.)

1. Its chemical symbol is Lu

2. Electric enclosure standard organization (abbr.)

3. One port on a FET

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

5. Gun safety and education organization (abbr.)

6. Unit of weight

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

8. Chemical symbol for cobalt

9. 10E-12 numerical prefix

10. RF connector type

11. Release volatile products from a liquid coating such as paint

12. Indium phosphide (abbr.)

13. Chemical symbol for nickel

14. Mate to an RX

19. Applying too large of a signal

21. Decimeter (abbr.)

23. Front edge of a wing (abbr.)

24. Type of spread spectrum that does not use direct sequence spreading (abbr.)

26. Ultra Fine Pitch Technology (abbr.)

28. Semiconductor lamp

30. (fUpper + fLower) / 2 (2 wds.)

31. Subatomic particle having a mass between that of an electron and a proton

32. International phonetic alphabet letter "P"

33. Coefficient of temperature (abbr.)

35. Oscillator that uses an RC low-pass filter and an RC high-pass filter to set the frequency of oscillations (2 wds.)

36. Army-Navy specification prefix

37. Sharp bend in I-V curve

39. Unit of length (abbr.)

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

48. Chemical symbol for magnesium

49. Type of computer display (abbr.)

50. 1.602E-19 Joules

52. Type of high speed Internet service (abbr.)

54. Intermodulation (abbr.)

56. Creating a signal for injection into a system

58. 1/000 of an inch

60. Galilean moon

62. Trims a piece of Kapton tape to length

63. Transmitted a signal

64. Equalizer (abbr.)

65. European Telecommunications Standards Institute (abbr.)

67. Type of distribution, squared

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

70. Add two or more inputs

71. Intermodulation (abbr.)

74. Boob tube (abbr.)

75. Amateur radio abbreviation for the Oceania region (abbr.)

77. Chemical symbol for aluminum

79. Gun safety and education organization (abbr.)

81. Satellite of Jupiter discovered by Galileo

84. Imaging device (abbr.)

85. Readability, Signal, and Tone (QoS report type)

86. Greek letter (micro)

89. More than one XCVR

90. Opposite of I.D.

91. CB slang for CB radio or antenna

93. Unit of inductance (abbr.)

94. Electrical overstress (abbr.)

95. Waveform that follows a sine function

97. Mechanical engineering organization (abbr.)

101. The "brains" of parallel processing computers

103. Manned rocket series that went to the moon

104. Radio signals from the cosmos (abbr.)

105. BSEE + 2 years

106. Chemical symbol for erbium

107. Keyboard key

110. Army-Navy specification prefix

114. Relating to the sun

117. International phonetic alphabet letter "K"

118. Chemical symbol for antimony

120. Image file format name extension

121. One type of electron spin

123. Internet address (abbr.)

124. Peak Inverse Voltage

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

127. Nordic Mobile Telephone

128. Singulated piece of IC wafer

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

131. Cyanide (abbr.)

132. A common battery cell size

134. Network department (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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Science Theme Crossword Puzzle Solution for January 24th, 2021 - RF Cafe

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