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Copyright: 1996 - 2024
    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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Amplifier Solutions Corporation (ASC) - RF Cafe

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

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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