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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Amateur Radio Theme Crossword Puzzle
January 23rd, 2022

This January 23rd custom made crossword puzzle has an Amateur Radio theme, compliments of RF Cafe. 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 puzzle 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

Amateur Radio Theme Crossword Puzzle for January 23rd, 2022 - RF Cafe

ACROSS DOWN
1. _____ + 8 Across + 13 Across, founder of the ARRL
5. Computer interconnection scheme (abbr.)
8. 1 Across + _____ + 8 Across, founder of the ARRL
12. A star that suddenly becomes much brighter and then gradually returns to its original brightness over a period of weeks to years
13. 1 Across + 8 Across + _____, founder of the ARRL
14. Defense Advanced Research Projects Agency
15. 10E1 numerical prefix
17. European equivalent to the U.L.
19. Chemical symbol for magnesium
20. Network department (abbr.)
22. Sound frequency in the human hearing range (abbr.)
24. SIP x 2
26. Local Oscillator (abbr.)
28. Internet address (abbr.)
29. Causes a change in the motion of a body
31. Weather facsimile per Ham radio (abbr.)
32. Radio Direction Finding
33. 1/000 of an amp (abbr.)
35. Relative power level unit (abbr.)
37. 30 kHz to 300 kHz
39. Opposite of O.D.
40. Chemical symbol for bismuth
42. Electromagnetic (abbr.)
44. Geometric solid having two ends which are similar, equal, and parallel rectilinear figures, and sides which are parallelograms
45. First two words in ARRL
47. Small representative graphics
48. Electrical safety organization (abbr.)
49. Modern battlefield technique (abbr.)
50. Test equipment (abbr.)
51. Chemical symbol for terbium
53. A common RS-232 serial bus command (abbr.)
55. S12 or S21 (abbr.)
57. Electronics Industry Association (abbr.)
58. Fastener hardware vendor in Woodside, NY
60. Leading and trailing edge frequency variation of a CW pulse
61. Current-voltage phase mnemonic
62. 1e3 uV
64. International Reply Coupon (abbr.)
66. Galilean moon
68. Chemical symbol for tantalum
69. S12 or S21 (abbr.)
71. Army-Navy specification prefix
73. A common battery cell size
74. Third word in ARRL
76. 1/1000000 prefix
78. Type of spread spectrum that does not use frequency hopping (abbr.)
80. Thin Shrink Small Outline Package (abbr.)
81. Finite Element Analysis (abbr.)
82. Maximum useful distance between a Tx and an Rx
1. Its chemical symbol is He
2. Chemical symbol for radon
3. Ad-hoc on demand distance vector (abbr.)
4. Very large unit of apparent power (abbr.)
5. Ham abbreviation indicating contacts with all major land masses
6. Wheel attachment point
7. Chemical symbol for nickel
8. Pulse Amplitude Modulation
9. Unit of energy (pl.)
10. Rapid Prototyping
11. One of ten administrative areas established by the FCC for Amateur Radio (2 wds.)
16. Fuel-air mixing devices
18. Process by which a beam of light is spread out as a result of passing through a narrow aperture
21. Radio that both transmits and receives (pl.)
23. U.S. Spectrum allocation agency
24. Keyboard key
25. Last stage in a transmitter (abbr.)
27. Orthogonal Frequency-Division Multiplexing
30. Opposite of I.D.
34. 18 GHz to 26.5 GHz (hyph.)
36. Creates an impenetrable physical barrier
38. Color code for the number 1
41. International Microwave Symposium
43. Chemical symbol for manganese
44. Type of chart
46. Chemical symbol for copper
47. Thing in a bill of material
52. Largest broadcaster in the UK (abbr.)
53. Type of distribution, squared
54. Chemical symbol for strontium
56. Last word in ARRL
59. Chemical symbol for lithium
63. International phonetic alphabet letter "K"
65. Tie a bundle of wires together
67. American space agency (abbr.)
70. Polish a crystal to an exact frequency
72. Gun safety and education organization (abbr.)
73. Airport Surveillance Radar (abbr.)
75. Chemical symbol for einsteinium
77. Band between RF and BB
79. Chemical symbol for tin 

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.

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November 13

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August 28

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August 14

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Amateur Radio Theme Crossword Puzzle for January 23rd, 2022 - RF Cafe

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