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This custom RF Cafe electronics-themed crossword puzzle for January 21st contains
only clues and terms associated with engineering, science, physical, astronomy,
mathematics, chemistry, etc., which I have built up over more than two decades.
Being the 21st day, words containing the letter "U" are marked with an asterisk
(*). Many new words and company names have been added that had not even been added
to the world's technical lexicon when I started in the year 2002. 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. 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. The technically inclined cruciverbalists
amongst us will appreciate the effort. A full list of all RF Cafe crosswords is
at the page bottom. Enjoy!
Reproduction of this puzzle without the express permission
of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words
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1. Decompressing a computer file *
6. Channel
used for earth-to-satellite communications *
9. User Datagram Protocol *
13.
Ratio of circumference to diameter
14. 300 kHz to 3 MHz
15. Chemical symbol
for argon
16. Front edge of a wing (abbr.)
17. Type of antenna with an element
made of a single, flexible rod or tube
18. Chemical symbol for helium
20.
What can we call any material in the form of a liquid or a gas *
25. Is behind
in phase
27. Unit of inductance (abbr.)
28. Modulation type (abbr.)
29.
Finite-Element Model
31. Coordinated Universal Time (abbr.) *
32. Universal
Mobile Telecommunications System (abbr.) *
34. World's 1st fully electronic digital
computer (abbr.)
36. Chemical symbol for silicon
39. Chemical symbol for beryllium
40. Electrical safety organization (abbr.) *
41. Chemical symbol for thallium
43. Switch type with guaranteed default position
45. Web's most popular radio
frequency engineering site (2 ltrs. + 1 wd.)
46. Ham-ese for Young Lady
47.
Chemical symbol for radium
48. Chemical symbol for lutetium *
53. A repeater
that receives further than it can transmit, big ears, small mouth
55. Opposite
of O.D.
57. What a capacitor is used for regarding energy
58. Small unit of
capacitance (abbr.)
59. Describes an amplifier with a multiplier of 1 (2 wds.)
*
60. Chemical symbol for terbium
62. Chemical symbol for scandium
63.
Constellation of the greater bear (2 wds.) *
67. Unit of inductance (abbr.)
69. International phonetic alphabet letter "U" *
73. Switch position
74. Emits
electromagnetic energy
76. Centimeter (abbr.)
77. Chemical symbol for beryllium
78. 1.602E-19 Joules
79. Empty space left in rocket fuel tank to allow for fuel
expansion *
81. Flame resistant material
85. Chemical symbol for tin
86.
Unit of time (abbr.) *
87. Type of modulation (abbr.)
89. Abbreviation for,
Becquerel, the unit of radioactive activity
90. Using a logical connection scheme
for redundant power supplies
92. Type of antenna with four-sided loops *
93.
Programmable logic device (abbr.)
95. Specialized mobile radio (abbr.)
97.
Chemical symbol for rhodium
98. Semiconductor and calculator company (abbr.)
99. Web page language
100. Remove insulation from a wire
102. Chemical symbol
for selenium
103. Multichannel multipoint distribution service
105. Chemical
symbol for tantalum
106. Type of component package (abbr.)
107. Electromagnetic
(abbr.)
108. Unit of volume (abbr.)
110. Half of DSB
111. Channel used
for earth-to-satellite communications *
112. Constellation of the little bear
(2 wds.) * |
2. Chemical symbol for neptunium
3. IC socket
type for easy insertion & removal (abbr.)
4. Intermodulation distortion (abbr.)
5. A measure of receiver quality (abbr.)
6. Internet addresses *
7. Precision
landing system (abbr.)
8. Chemical symbol for neon
9. Unit of inductance (abbr.)
*
10. 2/3 of a triac
11. Parts per million (abbr.)
12. Integrated radio
front-end for the 300 MHz to 3 GHz band (abbr., 2 wds., pl.) *
17. Color code
for the number 9
19. BS__ - the degree held by many RF Cafe visitors
21. Chemical
symbol for lutetium *
22. UMTS terrestrial radio access (abbr.) *
23. Multifunctional
silicon devices (abbr.)
24. Miniature RF connector
26. International phonetic
alphabet letter "G"
27. Chemical symbol for manganese
30. Degree of IC sophistication
(abbr.)
33. Test equipment (abbr.)
34. 10E18 bits of data
35. Chemical
symbol for aluminum
37. S12 or S21 (abbr.)
38. Impenetrable physical barrier
40. Seventh planet from the sun **
42. First American to orbit the earth - John
_____
44. Release control over
48. Filter type that blocks upper frequencies
(abbr.)
49. Integrated radio front-end for the 300 MHz to 3 GHz band (abbr.,
2 wds.) *
50. Very large unit of apparent power (abbr.)
51. Part of a FOR
loop
52. 1e-6 mA
54. RF connector type
56. Chemical symbol for dysprosium
60. Telex-Over-Radio (abbr.)
61. Securing devices
63. One cutoff frequency
specification for a bandpass filter *
64. Below ELF
65. Chemical symbol for
molybdenum
66. The "A" in DAC
68. Amateur radio enthusiast
69. A compiler
directive *
70. Band between RF and BB
71. Type of logic gate
72. Used
a DMM or o-scope *
75. Online auction site
79. Volts, meters, pints, pounds,
eg. *
80. Sudden, brief increase in wind speed *
82. CB slang for policeman
83. Chemical symbol for antimony
84. Slang for when a professor hints at an exam
problem (abbr.)
85. Chemical symbol for strontium
87. Upper frequency (abbr.)
*
88. milliampere-hour (abbr.)
90. Unit of resistance (pl.)
91. Chemical
symbol for nickel
92. Quadrature Phase Shift Keying (abbr.)
93. Chemical symbol
for platinum
94. Chemical symbol for lithium
96. 1E6 nanoseconds
97. Common
average used for sinewaves (abbr.)
99. The computer in 2001: A Space Odyssey
100. "Texting" (abbr.)
101. The cell band above DCN
104. Logarithmic ratio
(abbr.)
105. Test point (abbr.)
107. Chemical symbol for erbium
109. Chemical
symbol for cobalt |
See solution below
2024 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.
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.
May 1967 Radio-Electronics Puzzler
March 1967 Radio-Electronics Puzzler
February
18
February
11
February 4
January
28
January 21
January 14
January 7
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