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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...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Technology Theme Crossword Puzzle
April 4, 2021

This Technology Theme Crossword Puzzle for April 4th 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

Engineering-Theme Crossword Puzzle for April 4th, 2021 - RF Cafe

ACROSS DOWN
1. Symbols and lines used to construct a representative drawing of a system at a high level - and what RF Symbols for Visio and Office are perfect for (2 wds., pl.)
10. Constellation : The lion
11. He developed an alphabet composed of dots and dashes
12. Powers pneumatic devices
14. Automatic Calibration System (abbr.)
17. SIP x 2
18. Describes the action of cleaving a crystal plane
20. Summed
21. Vertical cavity-surface emitting laser (pl.)
23. Common average used for sinewaves (abbr.)
24. Type of chart
26. Adjust a pot
28. Opposite of I.D.
29. Chemical symbol for thallium
30. Color quality
31. Chemical symbol for antimony
33. Ham abbreviation for "distant station"
34. Analog-to-Digital (abbr.)
35. Causes a voltage or current waveform to gradually die out
37. Multifunctional silicon devices (abbr.)
39. Chemical symbol for tin
40. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
41. Radio Amateurs of Canada (abbr.)
43. Amateur radio abbreviation for the Oceania region (abbr.)
45. PC follower
46. Voltage-controlled oscillator (abbr.)
47. Exponent that returns the original number
48. Unit of inductance (abbr.)
49. Radio term for indicating the end of a transmission segment
51. Adjusts
53. Describes when a synchronous motor loses phase lock
55. Its chemical symbol is Xe
57. "Texting" (abbr.)
58. Type of antenna constructed from one or more winding(s) of wire or rods (pl.)
59. Apollo 11 astronaut ____ Armstrong
61. Adjust
62. Electronics Industry Association (abbr.)
64. Graphics file extension
67. Chemical symbol for scandium
68. Opposite of a LO
70. Filter type that blocks frequencies below and above a specified band (abbr.)
72. 3 MHz to 30 MHz
73. Reduction of receiver sensitivity due to overload from a nearby transmitter
1. Chemical symbol for beryllium
2. Terminations
3. Unit of length (abbr.)
4. U.S. military organization (abbr.)
5. A famous LEO satellite constellation (originally to be 77 satellites)
6. MS's server-side script engine for dynamically-generated web pages (abbr.)
7. Electronics manufacturer with "meatball" logo
8. Joins a male and a female connector
9. Chemical symbol for silicon
10. Chemical symbol for lanthanum
13. Chemical symbol for rhodium
15. Chemical symbol for cadmium
16. Impenetrable physical barrier
18. Imaging device (abbr., pl.)
19. Unit of time (abbr.)
20. Stock symbol for Advanced Micro Devices
22. Semiconductor lamp
23. Read-only (abbr.)
24. A vector quantity (typically a complex number) representing a sinusoidally varying current or voltage (pl.)
25. Type of reconfigurable memory (abbr., pl.)
27. Mate to an RX
29. Time delay (abbr.)
32. Chemical symbol for bismuth
34. RF radiating structure
35. Digital Enhanced Cordless Telephone
36. Prefix for font without serifs
38. Unit of electrical charge
39. File menu option
40. 1e3 uV
42. European equivalent to the U.L.
44. The shortest-duration modulation state in a spread spectrum system
49. Shorthand for oxygen
50. Term indicating profitability of a company (abbr.)
52. Type of high frequency diode (abbr.)
53. Semiconductor On Insulator (abbr.)
54. Unit of time (abbr.)
56. Chemical symbol for nickel
58. Chemical symbol for lawrencium
60. Front edge of a wing (abbr.)
61. Coefficient of temperature (abbr.)
62. IC killer (abbr.)
63. Current-voltage phase mnemonic
65. Unit of admittance
66. Circuit for firing a radar magnetron (abbr.)
68. Chemical symbol for helium
69. One port of an amplifier
70. Stock symbol for Boeing
71. Chemical symbol for platinum

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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July 3

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April 11

April 4

March 28

March 21

March 14

March 7

February 28

February 21

February 14

February 7

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January 10

January 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engineering-Theme Crossword Puzzle Solution for March April 4th, 2021 - RF Cafe

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