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!
Exodus Advanced Communications Best in Class RF Amplifier SSPAs
Copper Mountain Technologies (VNA) - RF Cafe

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:


Axiom Test Equipment - RF Cafe

Microwave Engineering Theme Crossword Puzzle
February 28th, 2021

This Engineering Theme Crossword Puzzle for February 28th contains only words and clues related to engineering, 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

Microwave Engineering Theme Crossword Puzzle for February 28th, 2021 - RF Cafe

1. Device for matching two unbalanced ports (pl.)
6. Network department (abbr.)
7. Nikola _____
13. System for underwater navigation (pl.)
15. Mate to a pin
17. One port of an amplifier
18. Earth's natural satellite
21. Opposite of a LO
22. Crystal filter type (abbr.)
24. Uppermost surface
26. Type of current
27. Communication between stations by reflecting the radio waves off of the ionosphere
28. Permeability-tuned oscillator (abbr.)
30. Switch position
32. Chemical symbol for gold
34. Chemical symbol for plutonium
36. Chemical symbol for radon
37. Type of flip-flop
38. Unit of volume (abbr.)
40. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
43. Chemical symbol for cesium
44. Network department (abbr.)
45. Strong, lightweight wood
47. Multifunctional silicon devices (abbr.)
48. Negatively doped silicon
50. Electronic warfare defense (abbr.)
53. Chemical symbol for silicon
54. Type of logic gate
56. Chemical symbol for chromium
58. Amateur radio operators trade these with each other after making contact (2 wds.)
61. Unit of inductance (abbr.)
62. Trims a piece of Kapton tape to length
63. What is the alternative name for a pi meson
65. Frequency band at low end of audio spectrum
66. CB slang for male police officer (2 wds.)
70. Move from cell to cell
72. Analog-to-Digital (abbr.)
73. 1/000 of an amp (abbr.)
74. 10E1 numerical prefix
75. Chemical symbol for aluminum
77. Chemical symbol for cobalt
78. Optical storage media
81. BSEE + 2 years
83. Powerful mathematics software used by engineers
86. Unit of capacitance (abbr.)
87. Type of matrix barcode used with laser scanning(abbr.)
88. Chemical symbol for berkelium
90. Type of overvoltage protection circuit (pl.)
95. Chemical symbol for thallium
96. Intermodulation (abbr.)
98. Decimeter (abbr.)
100. Greek letter
101. Unit of current
103. Volts divided by resistance
105. Ham's code for "What is your location?"
107. Its chemical symbol is Sm
108. Classification
1. Unit of time (abbr.)
2. Chemical symbol for nobelium
3. Volt, meter, pint, pound, eg.
4. 10E-9 numerical prefix
5. Chemical symbol for strontium
7. Part of a FOR loop
8. International phonetic alphabet letter "E"
9. Propagation by means of ionospheric reflection
10. Front edge of a wing (abbr.)
11. PC follower
12. Spongy material used in anechoic chambers
14. Type of component package (abbr.)
15. Chemical symbol for tin
16. First stages of a receiver
19. Opposite of I.D.
20. Amateur radio abbreviation for the Oceania region (abbr.)
23. Most protruding part of planetary rings as seen from distance
25. Precision approach radar (abbr.)
27. Color quality
29. Cause a circuit breaker to open
31. Cellphone band just below PCS
33. Unit of capacitance (abbr.)
34. Unit of capacitance (abbr.)
35. Readability, Signal, and Tone (QoS report type)
39. Software engineering tool (abbr.)
41. Complex Instruction Set Computer
42. Asynchronous Communication Interface Adapter (abbr.)
43. Carrier-to-noise ratio (abbr.)
46. Curve formed by a point which moves according to a mathematically defined rule
49. A major search engine
51. "Calling any amateur radio station"
52. 1E6 nanoseconds
54. Chemical symbol for neodymium
55. Unix, Linux or Windows (abbr.)
57. A common RS-232 serial bus command (abbr.)
59. Polish a crystal to an exact frequency
60. Term indicating profitability of a company (abbr.)
61. Type of digital filter (abbr.)
62. Computer Assisted Design and Development
64. Forerunner to NASA
65. Reverse voltage on a diode
66. Last stage in transmitter (abbr., pl.)
67. Agilent's EE design software (abbr.)
68. The UK's largest defense electronics contractor (abbr.)
69. Type of data storage IC
71. Measure of how quickly an electron can move through a metal or semiconductor
73. Unit of length (abbr.)
76. Chemical symbol for lanthanum
79. Chemical symbol for ruthenium
80. Switch position
81. Unit of admittance
82. Enhanced Graphics Adapter
84. Slang for when a professor hints at an exam problem (abbr.)
85. Chemical symbol for lawrencium
89. Unit of length (abbr.)
91. Read-only (abbr.)
92. Wavelength division multiplexing (abbr.)
93. Graphics file extension
94. One component of a complex number (abbr.)
95. Mate to an RX
97. Specialized mobile radio (abbr.)
99. Automated Test Equipment (abbr.)
101. A common battery cell size
102. Ratio of circumference to diameter
103. Modulation type (abbr.)
104. Chemical symbol for scandium
105. Unit of liquid measure (abbr.)
106. Chemical symbol for mercury

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.

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

December 26

December 19

December 12

December 5

November 28

November 21

November 14

November 7

October 31

October 24

October 17

October 10

October 3

September 26

September 19

September 12

September 5

August 29

August 22

August 15

August 8

August 1

July 25

July 18

July 11

July 4

June 27

June 20

June 13

June 6

May 30

May 23

May 16

May 9

May 2

April 25

April 18

April 11

April 4

March 28

March 21

March 14

March 7

February 28

February 21

February 14

February 7

January 31

January 24

January 17

January 10

January 3
















Microwave Engineering Theme Crossword Puzzle Solution for February 28th, 2021 - RF Cafe

Triad RF Systems Amplifiers - RF Cafe


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

These Are Available for Free