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Amateur Radio Crossword Puzzle
January 25, 2015

This is likely the last engineering-themed crossword puzzle that I will be creating. It takes about an hour to make and publish each one, and since I suspect the number of dedicated cruciverbalists out there are few, it is just not worth the effort anymore. Without any memorable exceptions, I have created a crossword puzzle every week since sometime in the year 2000 (more than 700 total). Each one was made with personally selected words to avoid non-relevant terms and clues. The puzzles will resume if enough requests come in to do so, otherwise, today marks the end of an era.

I will still be glad to create a special edition crossword for your newspaper, newsletter, etc.


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

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

2015 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.

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

December 27

December 20

December 13

December 6

November 29

November 22

November 15

November 8

November 1

October 25

October 18

October 11

October 4

September 27

September 20

September 13

September 6

August 30

August 16

August 9

August 2

July 26

July 19

July 12

June 21

May 3

April 5

March 8

March 1

February 22

February 8

January 25

January 18

January 11

January 4

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

Amateur Radio Crossword Puzzle for January 25, 2015 - RF Cafe


1. Miniature RF connector

4. Photoshop and Dreamweaver company

8. 8 GHz to 12.5 GHz

12. Coordinated Universal Time (abbr.)

15. A keyboard key

17. Chemical symbol for beryllium oxide

18. International Telecommunications Union

19. Java server pages (abbr.)

21. With 38 Across, part of this website's title

23. Greek letter

25. Unit of admittance

27. Flash caused by an electric current ionizing a gas or vapor

28. A common battery cell size

29. Stock symbol for Boeing

30. Anatech Electronics, Inc. (abbr.)

32. High speed data over telephone lines (abbr.)

34. Part of this website's title

35. Chemical symbol for neodymium

36. Time Division Multiplexing

37. The system than converts common website names to IP addresses (abbr.)

38. With 21 Across, part of this website's title

39. The UK's largest defense electronics contractor (abbr.)

41. Cellphone band below PCS

42. Miniature RF connector

43. Digital Enhanced Cordless Telephone

45. Person responsible for program spending (abbr.)

46. File name extension for an ASCII file

48. Mr. Lenz's first name

49. Receiver/transmitter that listens for a transmission and re-transmits it

50. Type of logic gate (pl.)

52. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)

53. Isolator or circulator ferrous component

56. Direct Digital Synthesis (abbr.)

58. Personal Digital Cellular

59. Ham abbreviation indicating contacts with all major land masses

62. Type of high frequency circuit substrate (abbr.)

65. It can follow an MS

66. Big Blue

67. Chemical symbol for lithium

68. Amateur radio abbreviation for the Oceania region (abbr.)

70. Ground fault interrupter (abbr.)

72. Colorado Springs military school (abbr.)

73. 1.602E-19 Joules

74. Bands between RF and baseband

75. Deutsche Industrie Normenausschuss

76. Special diode type that can be switched (abbr.)

78. Stock symbol for Lockheed Martin

80. Chemical symbol for manganese

81. Powers pneumatic devices

82. Transmit Incremental Tuning (abbr.)

83. Type of data conversion device (abbr.)

85. 3 GHz to 30 GHz

87. High Data Rate

88. Prefix meaning "to squeeze"

89. International phonetic alphabet letter "O"

90. One system's phonetic letter "z"

2. Akin to an EE, CE, AE, etc.

3. Base Station Transceivers (abbr.)

5. Logarithmic ratio (abbr.)

6. Original Equipment Manufacturer (abbr.)

7. Inventor of the pre-quantum atomic model

9. Nickname given to a satellite

10. System for guiding aircraft (abbr.)

11. Greek letter used for frequency

12. Country of RF Cafe's residency

13. Test point (abbr.)

14. Female U.S. Naval admiral who coined the term "bug" for software problems (2 wds.)

16. Software drafting tool (abbr.)

19. Intentionally block communications signals

20. Electron beam pattern method used in CRTs (2 wds., pl.)

22. Finite Element Analysis (abbr.)

24. Upper Sideband (abbr.)

26. Orthogonal frequency-division multiplexing (abbr.)

27. Most protruding part of planetary rings as seen from distance

28. Type of data conversion device (abbr.)

29. Low- to mid- frequency RF connector

31. Band between RF and BB

33. Chemical symbol for lanthanum

36. Chemical symbol for thulium

37. Morse Code for "from"

40. Reflected radar or sonar signal (pl.)

42. Threaded fastener

44. Ham's code for "Are your receiving me badly?"

47. Term used in soldering to achieve the condition that occurs when the metals being soldered are hot enough to melt the solder so it flows over the surface

51. Quantum electron property

52. Official engineering change document (abbr., pl.)

54. Ultra High Voltage (abbr.)

55. Chemical symbol for cadmium

56. Logarithmic unit of ratio (abbr., pl.)

57. Decimeter (abbr.)

60. Chemical symbol for silver

61. Curly-Q type light bulb (abbr.)

63. Chemical symbol for tantalum

64. Airflow rate (abbr.)

66. Discipline for aircraft navigation in low visibility environments (abbr.)

67. Type of wire used to wind baluns and couplers

69. Imaging device (abbr., pl.)

71. International Microwave Symposium (abbr.)

74. Type of digital filter (abbr.)

75. Singulated piece of IC wafer

77. Radio Amateurs of Canada (abbr.)

79. Unit of frequency

81. Analog-to-Digital (abbr.)

82. Greek letter

84. Chemical symbol for calcium

86. Chemical symbol for iron

See solution below


















Amateur Radio Crossword Puzzle Solution for January 25, 2015 - RF Cafe

Lotus Communications Systems RF Components - RF Cafe

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    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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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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