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

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RF Cafe Engineering Crossword Puzzle w/Weekly Headlines
May 20, 2018

At least 10 clues with an asterisk (*) in this technology-themed crossword puzzle are pulled from this past week's (5/14 - 5/18) "Tech Industry Headlines" column on the RF Cafe homepage. For the sake of all the avid cruciverbalists amongst us, each week I create a new technology-themed crossword puzzle using only words from my custom-created 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, see someone or something in the exclusion list who or that is directly related to this puzzle's theme, such as Hedy Lamar 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

RF Cafe Engineering Crossword Puzzle w/Weekly Headlines May 20, 2018

1. Harris to _________ India's ATC Communications Infrastructure *
6. FCC Imposes Fine for Illegal Signal ______ *
9. Apple Urges ___ to Keep More High Spectrum Unlicensed *
13. One component of a complex number (abbr.)
14. Chemical symbol for radon
15. Stock symbol for Boeing
16. PCB mask exposing ray (abbr.)
17. Prefix meaning ground or earth
18. One type of electron spin
20. A concern of Boolean equations
25. Reliability measure (abbr.)
27. Read-only (abbr.)
28. Time delay (abbr.)
29. The UK's largest defense electronics contractor (abbr.)
31. Negation prefix
32. Elemental compound used for microwave frequency reference oscillators (abbr., pl.)
34. Type of microwave diode (pl.)
36. Electronics manufacturer with "meatball" logo
39. Chemical symbol for einsteinium
40. Ham-ese for Young Lady
41. Chemical symbol for einsteinium
43. Marconi's transmitter configuration (2 wds.)
45. Reserves for
46. Part of a FOR loop
47. Start frequency (abbr.)
48. Unit of capacitance (abbr.)
53. ________ Unveils Suite of Sky5™ Solutions *
55. Chemical symbol for lanthanum
57. Merrill ________ - popular author on radar system amplifier design
58. Filter type that blocks frequencies in a specified band (abbr.)
59. Moon of Saturn discovered in 1789
60. Chemical symbol for cesium
62. Chemical symbol for erbium
63. The dit-dah-dit sent at the end of a transmission (2 wds.)
67. Army-Navy specification prefix
69. _______ Radio Parity Act Language Inserted in National Defense Authorization Act *
73. A common battery cell size
74. Distributor Warns of Chip Resistor ________ *
76. Type of current
77. Unit of time (abbr.)
78. 1/000 of an amp (abbr.)
79. Feature of PCB layout software that lays down traces automatically
81. A number that can be expressed as a/b, where a, b are integers
85. Unit of apparent power (abbr.)
86. One component of a complex number (abbr.)
87. Unit for 1,000 watt-seconds (abbr.)
89. Chemical symbol for cobalt
90. Parameter that is a figure of merit for receiver performance in presence of multiple signals (abbr., pl.)
92. Electronic Variable Optical Attenuator (abbr.)
93. Cellphone band directly above DCS
95. Radio frequency interference (abbr.)
97. Filter type that blocks frequencies below and above a specified band (abbr.)
98. One port of an amplifier
99. Connector type
100. Android P Tackles _____ Addiction, Distraction *
102. Chemical symbol for mercury
103. Fourth largest asteroid
105. Chemical symbol for arsenic
106. Modulation type (abbr.)
107. Chemical symbol for platinum
108. Chemical symbol for lutetium
110. Total radiated power (abbr.)
111. ______ Joining Sony? Music Unit Buying Stake in Peanuts *
112. UK Billionaire Invests £24M in _________ Earth Station
2. Type of logic gate
3. Keyboard key
4. International Reply Coupon (abbr.)
5. Chemical symbol for zinc
6. Intentionally blocks communications signals
7. Maximum Usable Frequency
8. 1.602E-19 Joules
9. Chemical symbol for iron
10. Computer monitor (abbr., pl.)
11. Software drafting tool (abbr.)
12. 3 ________ with Amateur Radio Payloads Deployed from ISS *
17. Frequency (pl.)
19. Last stage in a transmitter (abbr.)
21. Switch position
22. Stock symbol for Google
23. One port of an amplifier
24. U.S. U-turn Gives Hope to ___ *
26. The "B" in BGA
27. Chemical symbol for ruthenium
30. Enhanced Graphics Adapter
33. Unix, Linux or Windows (abbr.)
34. ______, Facebook, Others Press for 6 GHz Rulemaking *
35. Unit of time (abbr.)
37. Chemical symbol for erbium
38. Form of digital phase modulation in which the phase of the RF signal depends on the modulating code (abbr.)
40. International phonetic alphabet letter "Y"
42. 6.02x10E23 of anything (pl.)
44. Audio Frequency Shift Keying (abbr.)
48. Printed Wiring Board (abbr.)
49. One sampling port of a directional coupler
50. Display type
51. Chemical symbol for nobelium
52. Chemical symbol for tin
54. Signal-to-noise ratio (abbr.)
56. Chemical symbol for aluminum
60. World's largest yearly convention of gadget and device manufacturers (abbr.)
61. Solid figure that has every point on its surface equidistant from its center
63. Moves from cell to cell
64. Unit of frequency
65. Chemical symbol for radium
66. Balanced-to-unbalanced devices
68. Negative temperature coefficient (abbr.)
69. Active Electronically Scanned Array (abbr.)
70. Analog-to-Digital (abbr.)
71. Equalizer (abbr.)
72. He explained why the sky appears blue
75. General Packet Radio Service
79. Does _____ Need More Deregulation? *
80. Unit of energy (pl.)
82. Temperature-compensated crystal oscillator
83. Amateur radio abbreviation for the Oceania region (abbr.)
84. Type of logic gate
85. 300 Hz to 3 kHz in audio (abbr.)
87. Kilovolts (abbr.)
88. BT Promises £3.7B Budget for FTTH and 5G, Despite Massive ___ Cuts *
90. Unintended frequency product from a mixer
91. Chemical symbol for radon
92. Online auction site
93. Unit of inductance (abbr.)
94. Chemical symbol for tin
96. Unit of inductance (abbr.)
97. Semiconductor device type (abbr.)
99. Digital storage oscilloscope (abbr.)
100. Permeability-tuned oscillator (abbr.)
101. Voltage-current phase mnemonic
104. Chemical symbol for neptunium
105. Army-Navy specification prefix
107. Chemical symbol for polonium
109. Electrical safety organization (abbr.)

See solution below


2018 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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December 16
December 9
December 2
November 18

August 5
July 29
July 22
July 15
July 8
July 1
June 24
June 10
June 3
May 27
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May 13
May 6

April 29
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April 15
April 8
April 1
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March 11
February 25
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January 28
January 21
January 14
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RF Cafe Engineering Crossword Puzzle Solution May 20, 2018

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