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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

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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Science & Engineering Themed Crossword Puzzle
September 20th, 2020

September 20th's custom Science & Engineering themed crossword puzzle contains only only words from my custom-created lexicon related to engineering, science, mathematics, chemistry, physics, astronomy, etc. (1,000s of them). You will never find among the words names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort. You might, however, find someone or something in the otherwise excluded list directly related to this puzzle's technology theme, such as Hedy Lamarr or the Bikini Atoll, respectively. The technically inclined cruciverbalists amongst us will appreciate the effort.

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs crosswords.

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Science & Engineering Themed Crossword Puzzle for September 20th, 2020 - RF Cafe


1. Polish a crystal to an exact frequency
5. ___-AZIMUTH telescope mount
8. 10E-1 numerical prefix
9. Peak Inverse Voltage
11. Telephony over computer networks
13. Chemical symbol for beryllium
14. The region in a device's linear operating region where the input signal is minimal (2 wds., hyph.)
18. Chemical symbol for lead
19. Voltage-controlled oscillator (abbr.)
20. Workplace safety group (abbr.)
21. One port of an amplifier
22. Sudden, short-lived increase in voltage or current (pl.)
24. Greek letter
26. Chemical symbol for radium
27. High frequency semiconductor
30. An 8-bit unit (pl.)
32. Electromagnetic interference (abbr.)
33. Government program to bring electricity to farms (abbr.)
34. 1E6 bits per second
36. Determined temporal distance between events
39. Volts divided by resistance
40. Amateur Radio Association (abbr.)
42. Voltage-current phase mnemonic
43. Describes when a synchronous motor loses phase lock (pl.)
45. Like the inband portion of a Chebyshev filter
49. Opposite of a LO
50. Plain Old Telephone System
52. Quantum of energy or a quasiparticle associated with a compressional wave
54. Switch position
55. Key feature in a high level overvoltage protection device (pl.)
57. Electrical overstress (abbr.)
58. 1E6 nanoseconds
59. Name given to the measure of heat intensity
63. Electromagnetic (abbr.)
64. Real estate where equipment is located
65. Maximum Usable Frequency
66. Units of heat
69. Line of Sight (abbr.)
70. 30 Hz to 300 Hz
1. Front-most boundary of a wing (abbr.)
2. Type of current flow (abbr.)
3. Constellation : The fishes
4. International phonetic alphabet letter "K"
5. Flyboy
6. Numerical basis for decibels (abbr.)
7. Chemical element abbreviated Sn
8. Troubleshooting software
9. Last stage in a transmitter (abbr.)
10. Family of ICs with a certain component density level (abbr.)
12. Sets of poles
13. Bits per second (abbr.)
15. Semiconductor device type (abbr.)
16. The "S" in CES, the world's largest yearly convention of gadget and device manufacturers
17. Low Noise Amplifier (abbr.)
19. Video Graphics Array (abbr.)
23. Line extending out from center
25. Length times width
28. Electromagnetic interference (abbr.)
29. Software device for tracking elapsed time
31. Reduce the amount of response overshooting
35. Cause a circuit breaker to open
37. Voltage-current phase mnemonic
38. Slang for Ursa Major
41. Point in an revolving object's orbit that is farthest to the body it is orbiting (pl.)
43. Referring to a right triangle, the trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse (pl.)
44. Network configuration type
46. Moon of Saturn with retrograde orbit
47. Line of Sight (abbr.)
48. Weatherproof cover for a radar antenna (pl.)
49. Having power applied (slang)
51. Junk e-mail
53. Stock symbol for National Semiconductor
56. A length of transmission line that is open or shorted at one end
60. 1/000 of an inch
61. Permeability-tuned oscillator (abbr.)
62. Unit of capacitance (abbr.)
67. Chemical symbol for thallium
68. Unit of capacitance (abbr.)

See solution below

2020 Crossword Puzzle 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 & Engineering Themed Crossword Puzzle Solution for September 20th, 2020 - RF Cafe

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