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Independence Day Radio Crossword Puzzle
July 5, 2020

This week's custom RF Cafe crossword puzzle celebrates the 244th anniversary of the signing of the Declaration of Independence, and uses as a background the John Trumbull painting. Clues marked with an asterisk (*) are part of the theme. Each week for two decades, for the sake of all avid cruciverbalists amongst us, I have created a new technology-themed crossword puzzle using only words from my custom-created lexicon related to engineering, science, mathematics, chemistry, physics, astronomy, etc. You will never find among the words names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort. You might, however, find someone or something in the otherwise excluded list directly related to this puzzle's technology theme, such as Hedy Lamarr or the Bikini Atoll, respectively. Enjoy!

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

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

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

Independence Day Radio Crossword Puzzle for July 5, 2020 - RF Cafe


2. _______ + 87 Down + 98 Across, author of the "49 Across + 13 Across + 60 Down," national anthem of the 30 Across*
6. Collection of access points
11. Enhanced Graphics Adapter
13. File extension for some "theme" files
14. Coefficient of temperature (abbr.)
15. Extract information from a modulated signal
19. 1E6 nanoseconds
20. Computer monitor resolution measure (abbr.)
23. Personal Handy Phone System (abbr.)
24. Logic family (abbr.)
26. Circuit element connecting PCB layers
28. Another name for amateur radio
30. 2 Across + 87 Down + 98 Across, author of the "49 Across + 13 Across + 60 Down," national anthem of the ___*
33. 2 Across + 87 Down + 98 Across, author of the "49 Across + ________ + 60 Down," national anthem of the 30 Across*
35. 36 in. (abbr., pl.)
36. Rechargeable battery type (abbr.)
38. Method of self-detection and self-fixing transmission of digital data (abbr.)
40. Release control over
41. Target indication on a radar display
43. Programmable Logic Device (abbr.)
45. Unit of energy
47. Facsimile
48. Base of the binary number system
49. Network configuration type
51. Electrical safety organization (abbr.)
53. Chemical symbol for erbium
54. More than one BJT
56. Negation prefix
57. Direct Memory Access (abbr.)
58. Nickname given to a satellite
59. Unit of time (abbr.)
61. A BPF specification (abbr.)
62. Society of Civil and Structural Engineers (abbr.)
64. Service of the ARRL that helps hams solve technical problems (abbr.)
65. Amateur radio enthusiast
67. Large unit of apparent power (abbr.)
68. Last statement in a BASIC program
69. Basic element
71. Primary U.S. standards organization founded in 1918 (abbr.)
72. Engineering Change Order (abbr.)
75. Length times width (pl.)
78. End of transmission (abbr.)
80. Battery manufacturer in Bethel, CT
84. Notch type filter (abbr.)
85. The "C" in CES, the world's largest yearly convention of gadget and device manufacturers
88. Unlicensed radio type for personal and business use (abbr., pl.)
89. Intermodulation distortion (abbr.)
91. Bands between RF and baseband
92. Electromagnetic interference (abbr.)
93. Opposite of I.D.
95. Shorthand for telecommunications
97. Chemical symbol for holmium
98. 2 Across + 87 Down + ___, author of the "49 Across + 13 Across + 60 Down," national anthem of the 30 Across*
100. Heterojunction Bipolar Transistor
101. Fusing metals together using heat
102. Color set
1. Which branch of science means literally the physics of the earth
3. Radio-Electronics-Television Manufacturer's Association
4. Feedback system used to maintain constant signal level (abbr.)
5. 1e-6 mA
7. Weight (abbr.)
8. Unit of resistance
9. The stuff in the solder core
10. Transmits a signal
12. Chemical symbol for cobalt
15. Greek letter
16. Chemical symbol for einsteinium
17. Radio signals from the cosmos (abbr.)
18. A common RS-232 serial bus command (abbr.)
21. Attenuator
22. International Microwave Symposium (abbr.)
23. Ratio of circumference to diameter
25. Filter type that blocks upper frequencies (abbr.)
26. 3 kHz to 30 kHz
27. U.K. equivalent of the IEEE
29. Perform a calculus function
30. Schema for computer or device presentation to the operator (abbr.)
31. What kind of mathematical quantity has magnitude, but no direction
32. A common battery cell size
34. Mathematical model for an inexact representation of a function
36. Chemical symbol for neon
37. Logarithmic ratio (abbr.)
39. Shaping an object by forcing material through a die
42. Equiripple filter type
43. Unit of capacitance (abbr.)
44. Ham abbreviation for "distant station"
46. Type of microwave diode (pl.)
48. Follow a target on radar
50. Television Interference (abbr.)
52. Line of Sight (abbr.)
53. Electromotive force (abbr.)
55. Slang for when a professor hints at an exam problem (abbr.)
58. An incorrectly logged call sign (2 wds.)
60. 2 Across + 87 Down + 98 Across, author of the "49 Across + 13 Across + ______," national anthem of the 30 Across*
63. One of the "E"s in BSEE
65. Chemical symbol for helium
66. Chemical symbol for mendelevium
70. 1/000 of an amp (abbr.)
71. Chemical symbol for arsenic
73. Mr. Piper's famous yellow airplane
74. Type of logic gate (pl.)
76. Chemical symbol for rubidium
77. Sound frequency in the human hearing range (abbr.)
78. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)
79. Original Equipment Manufacturer (abbr.)
81. Inductor used to block RF signals
82. Chemical symbol for lithium
83. Stock symbol for Lockheed Martin
85. Airflow rate (abbr.)
86. Unix, Linux or Windows (abbr.)
87. 2 Across + _____ + 98 Across, author of the "49 Across + 13 Across + 60 Down," national anthem of the 30 Across*
90. Morse Code for "from"
91. Galilean moon
94. Keyboard key
96. Chemical symbol for europium
97. Heterojunction Bipolar Transistor
99. Yard (abbr.)
100. Chemical symbol for helium

See solution below

2020 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.

2020 | 2019 | 2018 | 2017 | 2016 | 2015 | Sudoku

December 27

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December 13

December 6

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November 22

November 15

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November 1

October 25

October 18

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October 4

September 27

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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

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May 10

May 3

April 26

April 19

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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

















Independence Day Radio Crossword Solution for July 5, 2020 - RF Cafe

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