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Radar & Radio Theme Crossword Puzzle
January 9th, 2022

This week's crossword puzzle for January 9th sports a radar and radio theme. All RF Cafe crossword puzzles are custom made by me, Kirt Blattenberger, and have only words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. 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., Reginald Denny or the Tunguska event in Siberia). 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

Radar & Radio Themed Crossword Puzzle for January 9th, 2022 - RF Cafe


1. Type of flip-flop
2. Chemical symbol for aluminum
3. Add two or more inputs
4. Switch position
5. Term used for radar signal echo
7. Component
8. Chemical symbol for lanthanum
9. Slang for when a professor hints at an exam problem (abbr.)
10. Army-Navy specification prefix
11. Nonlinearly mix two tones to create sum and difference frequencies (pl.)
13. Chemical symbol for neptunium
15. Octagonal, oblong, cubical, crescent, etc. (pl.)
17. Bearing from which a radio or radar signal is received (3 wds.)
18. Automatic Packet Position Reporting System (abbr.)
22. The "M" in 8 Across
28. FCC Part 15 rules apply in this band (abbr.)
29. Radio that both transmits and receives
34. Added a termination
35. Amateur radio operating mode for sharing realtime video (abbr.)
40. Its chemical symbol is Na
42. 1E6 bits per second
44. O-scope time base actions
49. Cause a voltage or current waveform to gradually die out
51. 1E6 nanoseconds
52. Sound frequency in the human hearing range (abbr.)
53. 10E1 numerical prefix
54. Type of matrix barcode used with laser scanning(abbr.)
57. Intermodulation distortion (abbr.)
59. Chemical symbol for tantalum
60. Chemical symbol for gallium
61. JavaScript (abbr.)

1. Display used by air traffic controllers (2 wds.)
6. Min-to-max voltage of a waveform (abbr.)
8. Stock symbol for Lockheed Martin
10. Automated Test Equipment (abbr.)
12. Automatic network analyzer (abbr.)
14. Ham radio abbreviation for naturally occurring noise or interference
16. Antenna radiated power measurement (abbr.)
18. Chemical symbol for gold
19. Cyanide (abbr.)
20. Adjacent Channel Power Ratio (abbr.)
21. Equalizer (abbr.)
23. Key feature in a high level overvoltage protection device
24. Chemical symbol for radon
25. Snail and E are examples of this
26. Opposite of I.D.
27. European Telecommunications Standards Institute (abbr.)
30. Prefix for 10E-18
31. Measure of source / load mismatch (abbr.)
32. Yard (abbr.)
33. Thin layer of material deposited a surface
35. Most protruding part of planetary rings as seen from distance
36. One port of an amplifier
37. End of transmission (abbr.)
38. A disk operation
39. Measure of source/load match
41. Type of current flow (abbr.)
43. Thing in a bill of material
44. Chemical symbol for antimony
45. Logarithmic unit of voltage (abbr.)
46. Opposite of a LO
47. Refers to the IEEE802.11 networks (abbr.)
48. Analog-to-Digital (abbr.)
50. Radio signals from the cosmos (abbr.)
51. Join a male and a female connector
52. Stock symbol for Advanced Micro Devices
54. Ham radio abbreviation for manmade noise or interference
55. Rate of a radar transmitter's output waveform (abbr.)
56. Powers pneumatic devices
58. Last stage in a transmitter (abbr.)
62. Unassigned frequency range above and/or below assigned spectrum used to prevent interference (2 wds., pl.)

See solution below


2022 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.

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


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 25

December 18

December 11

December 4

November 27

November 20

November 13

November 6

October 30

October 23

October 16

October 9

October 2

September 25

September 18

September 11

September 4


August 28

August 21

August 14

August 7

July 31

July 24

July 17

July 10

July 4

June 26

June 19

June 12

June 5

May 29

May 22

May 15

May 8

May 1


April 24

April 17

April 10

April 3

March 27

March 20

March 13

March 6

February 27

February 20

February 13

February 6

January 30

January 23

January 16

January 9

January 2


Radar & Radio Themed Crossword Puzzle Solution for January 9th, 2022 - RF Cafe

Innovative Power Products Resistors Terminations

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Kirt Blattenberger - RF Cafe Webmaster

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    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 tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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