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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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Science-Theme Crossword Puzzle
March 14, 2021

This Science-Theme Crossword Puzzle for March 14th has many words and clues related to... you guessed it... RF engineering - and 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 March 14th, 2021 - RF Cafe

ACROSS DOWN
1. Summers
5. Logarithmic unit of voltage
9. Exponent that returns the original number
10. Switch position
11. Its chemical symbol is Ce
13. 1.602E-19 Joules
14. Line of Sight (abbr.)
15. Type of graph with a circular grid
16. Amateur radio abbreviation for the Oceania region (abbr.)
18. Wireless phone region
19. Part of a FOR loop
20. Chemical symbol for calcium
21. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)
22. Chemical symbol for strontium
23. Occlusion of one heavenly body by another
26. BER, 8 bits at a time
29. Morse Code for "from"
30. An amateur station transmitting communications for the purpose of observation of propagation and reception or other related experimental activities (2 wds.)
33. Chemical symbol for helium
34. Charged particle
36. Type of interference to stations on nearby frequencies due to overmodulation
40. Total radiated power (abbr.)
42. Electronics Industry Association (abbr.)
43. Curve produced when a cone is cut by an oblique plane which does not intersect the base (pl.)
45. Nordic Mobile Telephone
47. Unit of inductance (abbr.)
50. Semiconductor device that varies its transconductance according to light intensity
53. Chemical symbol for tin
55. Half of a DIP
56. Test equipment vendor
58. PC follower
59. Amateur radio abbreviation for the Oceania region (abbr.)
60. Chemical symbol for silicon
61. A BPF specification (abbr.)
62. Short for terminal
63. Last stage in a transmitter (abbr.)
64. Change connector type
67. Peripheral Component Interface (abbr.)
68. 1/000 of an amp (abbr.)
69. Impurity in a semiconductor
71. Chemical symbol for neodymium
72. ___-back transformer
74. Color code for the number 2 (pl.)
75. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
1. Army-Navy specification prefix
2. Stock symbol for Dell Computer
3. Electrical overstress (abbr.)
4. Chemical symbol for radon
5. Keyboard key
6. Securing device
7. Gigantic star in Cetus
8. Volume unit (abbr.)
9. Radio term for indicating the end of a transmission segment
11. Chemical symbol for cobalt
12. Repositioned
13. Exalted-Carrier Single Sideband (abbr.)
15. The tip of a PCB probe
17. The largest asteroid
19. Chemical symbol for thallium
24. Alloy of copper and nickel which has an electrical resistance that barely changes with temperature
25. Orbiting communications platform (pl.)
27. Organization requiring 25 years of amateur service for membership, abbr.
28. Semiconductor On Insulator (abbr.)
31. ampere-hour (abbr.)
32. Logical negation (pl.)
35. The design component of total product cost (abbr.)
36. Chemical symbol for selenium
37. Part of a male connector
38. Light
39. One component of a complex number (abbr.)
41. Unit of time (abbr.)
44. Positive emitter-coupled logic (abbr.)
46. Amplifier linearity specification (abbr.)
48. Chemical symbol for holmium
49. Thin Shrink Small Outline Package (abbr.)
51. Change from the initial value due to instability
52. Radio-Electronics-Television Manufacturer's Association
54. Rechargeable battery type (abbr.)
56. Part of CAD
57. Coefficient of temperature (abbr.)
58. Branch of the armed forces
60. Fail-____ switch
62. Image file format name extension
65. Automatic Calibration System (abbr.)
66. Chemical symbol for platinum
67. Personal Digital Cellular
70. Chemical symbol for erbium
71. A measure of receiver quality (abbr.)
73. Front edge of a wing (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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September

July 31

July 24

July 17

July 10

July 3

June 26

June 19

June 12

June 5

May 30

May 23

May 16

May 9

May 2

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April 18

April 11

April 4

March 28

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March 14

March 7

February 28

February 21

February 14

February 7

January 31

January 24

January 17

January 10

January 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Science-Theme Crossword Puzzle Solution for March 14th, 2021 - RF Cafe

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