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This RF & Microwave Crossword Puzzle of 2021 has many 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
2. The Brits call it a valve (2 wds.)
9.
A data unit in quantum computing
12. Chemical symbol for terbium
13.
Display type
14. RF ____, the world's best engineering website
16. Unit
of atmospheric pressure (abbr.)
17. Chemical symbol for gold
18. Analog-to-Digital
(abbr.)
20. Chemical symbol for praseodymium
21. Telex-Over-Radio (abbr.)
22. Last statement in a BASIC program
23. Low Noise Amplifier (abbr.)
25. Prevented the direct physical transfer of signals from one point to another
28. First name of a British scientist of falling apple fame
30. Synchronous
Digital Hierarchy
32. Antenna (abbr.)
33. Computer messaging service
36. 1/000 of an amp (abbr.)
37. Chemical symbol for erbium
39. Constellation
: The scales
40. Anatech Electronics Inc., (abbr.)
42. Positive voltage
lead color
44. Undesireable background information
46. Type of radiation
that has sufficient energy to knock electrons free from their orbits
50.
Rádio Nacional de Angola (abbr.)
51. Attenuator
52. Person responsible
for program spending (abbr.)
53. Front edge of a wing (abbr.)
55. Chemical
symbol for radon
56. Type of current flow (abbr.)
57. Communication
between stations by reflecting the radio waves off of the ionosphere
58.
Apollo 11 astronaut ____ Armstrong
60. Negation prefix
61. Filter type
that blocks lower frequencies (abbr.)
62. Ham radio organization (abbr.)
63. A bridge circuit used for accurate electrical measurements, named after
its inventor |
1. Filter circuit used to flatten group delay
(pl.)
3. Automated Test Equipment (abbr.)
4. Unlicensed FCC Part 95
realm for personal and business radio use (abbr.)
5. The "U" in UHF
6. Wire diameter unit (abbr.)
7. Time delay (abbr.)
8. Bit rate unit
10. Multifunctional silicon devices (abbr.)
11. Transformer interwinding
connection
15. What is the resistance that a moving object encounters as
it slides over another
16. Online service
17. Boolean expression (pl.)
19. The system than converts common website names to IP addresses (abbr.)
21. Tall structure for antennas
22. BS__ - the degree held by many RF Cafe
visitors
24. A common battery cell size
26. Plane geometric figure having
three straight sides and three angles
27. One component of a voltage or
current vector (2 wds.)
29. Circuit that reduces interference (abbr.)
31. Decimeter (abbr.)
34. Hiram Percy _____, founder of the ARRL
35.
Constellation : The lion
38. One component of a complex number (abbr.)
41. Type of digital filter (abbr.)
43. 2/3 of a triac
45. Signal-to-noise
ratio (abbr.)
47. Opposite of I.D.
48. Small representative graphics
49. Hit a component with an electrostatic discharge
51. Radio signal route
54. Electronics Industry Association (abbr.)
57. Having power applied (slang)
58. Silicon transistor type (abbr.)
59. Chemical symbol for lawrencium
60. 1e-6 mA
61. Chemical symbol for holmium |
See solution below
| 2021 Crosswords Archive |
|
 Take 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
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September
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May
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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
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