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 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.
2024 | 2023
|2022 | 2021
| 2020 | 2019
| 2018 | 2017
| 2016 | 2015
| 2014 | 2013
| 2012 | 2011
| 2010 | 2009
| 2008 | 2007
| 2006 | 2005
| 2004 | 2003
| 2002 | 2001
| 2000 |
Sudoku
Cruciverbalist:
A cruciverbalist is a person who is skilled at creating or solving crossword
puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and
"verbalist" from "verbal," indicating a person who deals with words.
cruciverbalists are often responsible for designing
crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and
the techniques used in constructing and solving crosswords. They aim to make puzzles
that are both challenging and enjoyable for crossword enthusiasts.
December 28
December 21
December 14
December 7
November 30
November 23
November 16
November 9
November 2
October 26
October 19
October 12
October 5
September 28
September 21
September 14
September 7
August 31
August 24
August 17
August 10
August 3
July 27
July 20
July 13
July 6
June 29
June 22
June 15
June 8
June 1
May 25
May 18
May 11
May 4
April 27
April 20
April 13
April 6
March 30
March 23
March 16
March 9
March 2
February 23
February 16
February 9
February 2
January 26
January 19
January 12
January 5
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
1. Illumination devices
5. Equiripple filter type (pl.)
11. _____
conductor
15. Innovative Power Products, Holbrook, NY (abbr.)
16. Chemical symbol for bromine
17.
Permeability-tuned oscillator (abbr.)
18. Boob tube (abbr.)
20. Frequency division multiple access
(abbr.)
22. Chemical symbol for erbium
24. Chemical symbol for californium
25. Application Specific
Integrated Circuit (abbr.)
27. Opposite of a LO
28. Transformer interwinding connection
30. Unit of
weight
31. Compliment to a pole in a filter transfer function
34. Negation prefix
35. Metric system
(abbr.)
36. Sound frequency in the human hearing range (abbr.)
37. Time Division Multiple Access
39.
Greek letter (micro)
40. Amateur Radio Direction Finding (abbr.)
41. Chemical symbol for lanthanum
42. Chemical symbol for nobelium
43. Chemical symbol for xenon
45. Chemical symbol for copper
46.
Test point (abbr.)
48. Chemical symbol for argon
49. Infrared (abbr.)
50. Chemical symbol for
aluminum
51. Weight (abbr.)
52. Chemical symbol for europium
53. Unit of resistance (pl.)
55.
Network department (abbr.)
57. Time Division Multiple Access
59. Infrared (abbr.)
60. Positive
voltage lead color
62. Voltage-current phase mnemonic
63. Compliment to a zero in a filter polynomial
65. Unit of energy
67. "Texting" (abbr.)
69. Boob tube (abbr.)
70. Move in a raster pattern
71.
Type of logic gate
72. Chemical symbol for tin
74. Short for terminal
76. Opposite of a LO
77.
Science of assuring operation amid dense EM background noise (abbr.)
78. Bandwidth (abbr.)
80. FCC Part
15 rules apply in this band (abbr.)
82. The gaseous state of water
83. Filter type also known as 'Cauer'
84. Basic PN junction component |
1. Maximally flat filter type (pl.)
2. Chemical symbol for lithium
3.
Filter type (abbr.)
4. Switch configuration (abbr.)
5. 4 GHz to 8 GHz
6. Using the moon as a passive
reflector to establish a signal path; moonbounce (abbr.)
7. Chemical symbol for ytterbium
8. Chemical
symbol for strontium
9. Electromotive force (abbr.)
10. 2 GHz to 4 GHz
11. Quantum electron property
12. Coordinated Universal Time (abbr.)
13. Chemical symbol for polonium
14. Filter type with equiripple
in passband and stopband
19. Unit of apparent power (abbr.)
21. Cell phone (sold to Google) and IC
manufacturer
23. Return-to-Zero (abbr.)
24. Chemical symbol for cobalt
26. Product offering type of
Applied Wave Research (AWR), Applied Computer Sciences (ACS), Guided Wave Technology, Sunshine Design, etc.
27. Chemical symbol for mercury
29. Met all test requirements
32. 1/6 inch printer's measure
33.
Chemical symbol for ruthenium
35. Filter type with high rate of out-of-band attenuation (aka 'elliptic')
(pl.)
38. x, y, or z on Cartesian coordinates
40. Automated universal inductance tester - watch that 3rd
letter, (abbr.)
42. 1e-6 mA
44. Chemical symbol for erbium
45. Chemical symbol for calcium
47.
Chemical symbol for platinum
54. Device for allowing two surfaces to rotate wrt each other
55. Galilean
moon
56. Chemical symbol for thallium
58. Steel, brass, aluminum, etc.
61. 1.602E-19 Joules
62.
ECM response
63. Chemical symbol for praseodymium
64. Chemical symbol for einsteinium
66. Vacuum tube
element
68. Unit of inductance (abbr.)
70. Miniature threaded RF connector
71. Lubricant
73.
Negative temperature coefficient (abbr.)
75. Degree of IC sophistication (abbr.)
77. BS__ - the degree
held by many RF Cafe visitors
78. Filter type that blocks frequencies below and above a specified band
(abbr.)
79. Weight (abbr.)
81. Chemical symbol for molybdenum |
See solution below
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