Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes App Notes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Forums Magazine USAF Radr Shop Sponsor RF Cafe RF Electronics Symbols for Visio RF Electronics Symbols for Office Word RF Electronics Stencils for Visio Thank you for visiting RF Cafe!
Amplifier Solutions Corporation (ASC) - RF Cafe
Exodus Advanced Communications Best in Class RF Amplifier SSPAs

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...

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

My Hobby Website:


TotalTemp Technologies (Thermal Platforms) - RF Cafe

RF Cafe Science & Engineering Crossword Puzzle
February 9, 2020

As with my hundreds of previous science and engineering-themed crossword puzzles, this one for February 9, 2020, contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc., which I have built up over nearly two decades. Many new words and company names have been added that had not even been created when I started in the year 2002. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

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

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

Engineering & Science Crossword Puzzle February 9, 2020 - RF Cafe 

<click for full size to print>

1. A type of jet fighter
8. Mathematical relationship of voltage, resistance, and current in a circuit (2 wds.)
15. Energy possessed by a body in motion
16. Digital transmission figure of merit (abbr.)
18. Measured
20. Largest broadcaster in the UK (abbr.)
21. Test point (abbr.)
22. Relating to the sun
24. Chemical symbol for gallium
25. World's largest yearly convention of gadget and device manufacturers (abbr.)
26. Chemical symbol for lead
27. Number is defined as a one followed by 100 zeros
28. Aircraft tracking system (pl.)
30. 1,000 seconds (abbr.)
31. Greek letter (micro)
32. Sent a file over a network (abbr.)
34. Unit of volume (abbr.)
36. Introduce unintended amplitude changes
39. Put a new program on a computer
43. Applies a lubricant
44. National Television System Committee (abbr.)
45. International Amateur Radio Union (abbr.)
46. Light
47. Helium, iron, silicon, or uranium, for example
49. Electromagnetic surveillance thwarting technology
51. Network department (abbr.)
52. Relating to sound
55. Unit of time (abbr.)
57. __ + 56 Down, this website's title
59. The ringed planet
62. Frequency band at high end of audio spectrum
65. 1/000 of an amp (abbr.)
66. Electrical overstress (abbr.)
68. Chemical symbol for polonium
69. The Brits call them valves
71. Chemical symbol for selenium
72. Electromotive force (abbr.)
73. Analog multimeter company
76. Stock symbol for National Semiconductor
77. Vacuum tube with five electrodes
79. Named a software object
80. Digital counter input line to set an initial value (pl.)
1. Service-Independent Building Blocks
2. RF connector type
3. BS__ - the degree held by many RF Cafe visitors
4. Prefix for 10E-18
5. High power density battery chemistry (abbr.)
6. Coefficient of temperature (abbr.)
7. 10 decibels
9. 1/100 meter (abbr.)
10. 1000000 prefix
11. Network configuration type
12. Front edge of a wing (abbr.)
13. Flash caused by an electric current ionizing a gas or vapor
14. 5 work days
15. 1E3 bits per second (abbr.)
16. Threaded fastener
17. ____ earth elements
19. Type of spread spectrum that does not use frequency hopping (abbr.)
22. Power-up with gradual application of current and/or voltage
23. Antenna driven element (pl.)
27. Triangular joint filler added for strength (pl.)
29. A triangle that has all three sides unequal in length
31. 1/1000 prefix
33. Unit of capacitance (abbr.)
35. Object orientated programming term
36. Singulated piece of IC wafer
37. Exponent that returns the original number
38. Stock symbol for Raytheon
40. The design component of total product cost (abbr.)
41. Add two or more inputs
42. Stock symbol for Lockheed Martin
48. Chemical symbol for cadmium
50. Amateur Radio Emergency Service (abbr.)
53. Balun with both ports unbalanced
54. Thing in a bill of material
56. 57 Across + ____, the world's best engineering website
58. Thin metallic shield material around coax cable
60. Nearest and furthest points to the center of gravitational attraction for a body in orbit
61. Device to assist in the performance of a chore
63. RF engineer's degree
64. Glass device is used for focusing light
65. Multichannel multipoint distribution service
67. Miniature threaded RF connector
70. Broadband Signal Intrusion (abbr.)
72. End of transmission (abbr.)
74. Chemical symbol for lead
75. Chemical symbol for neon
77. Chemical symbol for praseodymium
78. Test equipment (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.

2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | Sudoku

December 27

December 20

December 13

December 7

November 29

Thanksgiving Day

November 22

November 15

November 8

November 1

October 25

October 18

October 11

October 4

September 27

September 20

September 13

September 6

August 30

August 23

August 16

August 9

August 2

July 26

July 19

July 12

July 5

June 28

June 21

June 14

June 7

May 31

May 24

May 17

May 10

May 3

April 26

April 19

April 12

April 5

March 29

March 22

March 15

March 8

March 1

February 23

February 16

February 9

February 2

January 26

January 19

January 12

January 5
















Engineering & Science Crossword Solution February 9, 2020 - RF Cafe

Triad RF Systems Amplifiers - RF Cafe
ConductRF Phased Matched RF Cables - RF Cafe
RF Electronics Shapes, Stencils for Office, Visio by RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free