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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,

    BSEE - KB3UON

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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Technology Theme Crossword Puzzle
April 25, 2021

This Technology Theme Crossword Puzzle for April 25th has many words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. 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., Reginald Denny or the Tunguska event in Siberia). 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

Technology Theme Crossword Puzzle for April 25th, 2021 - RF Cafe

ACROSS DOWN
2. Threaded fastener (pl.)
5. Temporary high-speed blast of data
8. ______ Marietta, or Lockheed ______
13. Computer communication scheme (abbr.)
15. Unit of apparent power (abbr.)
16. Wired Equivalent Privacy (abbr.)
18. Discipline for aircraft navigation in low visibility environments (abbr.)
21. Chemical symbol for iron
22. Crystal filter type (abbr.)
24. Electrical safety organization (abbr.)
25. Unit of volume (abbr.)
27. Longitudinal shape-forming structural element
29. Type of data conversion device (abbr.)
31. Telecommunications Information Network Architecture (abbr.)
33. 30 kHz to 300 kHz
35. Chemical symbol for helium
36. Type of data storage IC (pl.)
38. Filter type that blocks lower frequencies (abbr.)
39. Strong cable covering
41. Electronics manufacturer with "meatball" logo
42. Used logic gates
44. Digital Signal Processor (abbr.)
45. Unit of admittance
46. Country of RF Cafe's residency
47. Color quality
48. Capacitor manufacturer
49. Graphics file extension
50. Million multiply accumulate operations (abbr.)
53. Chemical symbol for tantalum
55. Current-voltage phase mnemonic
56. Chemical symbol for praseodymium
57. Cellular Telecommunications Industry Association
60. PCB mask exposing ray (abbr.)
61. Movement
62. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
63. Intermodulation (abbr.)
64. Award offered by ARRL for contacting and confirming 100 or more different countries (abbr.)
66. Chemical symbol for neon
67. 3-phase transformer configuration
68. Chemical symbol for lithium
69. Primary U.S. standards organization founded in 1918 (abbr.)
71. Mr. Piper's famous yellow airplane
72. Ticker symbol for Analog Devices
73. Anatech Electronics Inc., (abbr.)
75. Nordic Mobile Telephone
77. Last statement in a BASIC program
78. Logical negation operator
80. Propagation by means of ionospheric reflection
83. "Calling any amateur radio station"
85. PCB interconnect
87. Chemical symbol for thallium
88. Describes when a synchronous motor loses phase lock
91. 1e-6 mA
93. JavaScript (abbr.)
94. Type of spread spectrum that does not use frequency hopping (abbr.)
96. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)
97. ____RF, passive RF component manufacturer in Huntersville, NC
99. Switch position
100. Chemical symbol for nickel
101. RF connector type
103. 1/100 meter (abbr.)
104. Digital pattern coding type (abbr.)
106. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
107. Weight (abbr.)
109. Sound-pressure level derived using A-weighting
110. Image storage format
111. RF IC manufacturer located in Dübendorf, Switzerland (now owned by ON Semiconductor)
112. The "A" in DARPA
1. Adhered
2. Chemical symbol for tin
3. 1.602E-19 Joules
4. Akin to WAC, only just in America
5. Filter type that blocks frequencies below and above a specified band (abbr.)
6. Move from cell to cell
7. Semiconductor and calculator company (abbr.)
9. Colorado Springs military school (abbr.)
10. One component of a complex number (abbr.)
11. Unit of time (abbr.)
12. O-scope time base action
14. Chemical symbol for aluminum
16. Wireless application protocol (abbr.)
17. Chemical symbol for erbium
19. Unit of length (abbr.)
20. Slang for transmitter and/or receiver
23. ampere-hour (abbr.)
25. Chemical symbol for calcium
26. Centimeter (abbr.)
28. Electro-_________, RF components & design services company in Palm City, FL - Also, the science of light
29. Conductor used to bleed charge from a high voltage supply bank (2 wds.)
30. Being in-phase
32. RF region defined at less than wavelength/(2 x pi)
33. Chemical symbol for lawrencium
34. Chemical symbol for iron
36. Angular speed unit
37. Miniature RF connector
39. Chemical symbol for arsenic
40. Chemical symbol for ruthenium
42. Optical cross-connect (abbr.)
43. Sound-pressure level derived using A-weighting
51. Multiplexer (abbr.)
52. A feedback scheme to level out the receiver audio volume (abbr.)
54. Automated Test Equipment (abbr.)
56. Programmable logic device (abbr.)
58. Chemical element abbreviated Sn
59. International Microwave Symposium (abbr.)
64. Logarithmic unit of ratio (abbr., pl.)
65. Common shorthand reference for a capacitor
69. Agilent's EE design software (abbr.)
70. Indium phosphide (abbr.)
71. 10E-2 numerical prefix
74. Radio signals from the cosmos (abbr.)
76. Akin to an EE, CE, AE, etc.
79. Type of shielded RF cable with two inner conductors
81. Unit for 1,000 watt-seconds (abbr.)
82. Network department (abbr.)
84. Ham's code for "Are my signals fading?"
86. Volts divided by resistance
87. Service of the ARRL that helps hams solve technical problems (abbr.)
89. Local Oscillator (abbr.)
90. One port of an amplifier
92. Army-Navy specification prefix
94. Direct Memory Access (abbr.)
95. Chemical symbol for scandium
97. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)
98. Conductor size unit (abbr.)
100. Chemical symbol for niobium
102. Unlicensed FCC Part 95 realm for personal and business radio use (abbr.)
103. 1/100 meter (abbr.)
105. 10E1 numerical prefix
106. Unit of length (abbr.)
108. Test equipment (abbr.)
109. Chemical symbol for dysprosium

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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November 28

November 21

November 14

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October 3

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August 29

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January 31

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Technology Theme Crossword Solution for April 25th, 2021 - RF Cafe

withwave microwave devices - RF Cafe
RF Cascade Workbook 2018 by RF Cafe
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