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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 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 Cascade Workbook 2018 - RF Cafe

RF Cafe Engineering & Science Crossword Puzzle
June 16, 2019

Since 2000, I have been creating custom engineering- and science-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

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

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

Engineering & Science Crossword Puzzle June 16, 2019 - RF Cafe

<click for full size to print>

1. 1/000 of an inch
4. Numerical prefix for 10E2
8. Generalized Multiprotocol Label Switching (abbr.)
12. Stock symbol for Lockheed Martin
15. Cellphone band directly above DCS
17. Ham's code for "What is your location?"
18. Filter type (abbr.)
19. A common battery cell size
21. Chemical symbol for lutetium
23. Direct Memory Access (abbr.)
25. Measure of source / load mismatch (abbr.)
27. Volt-ohmmeter (abbr.)
28. Slang for transmitter and/or receiver
29. 1e-6 mA
30. Resistive component of a capacitor's lumped element model (abbr.)
32. System On Chip
34. Chemical symbol for nickel
35. Unix, Linux or Windows (abbr.)
36. Special diode type that can be switched (abbr.)
37. Type of logic gate
38. RF ____, the world's best engineering website
39. The "L" in VLF
41. Ground fault interrupter (abbr.)
42. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr., pl.)
43. Unit of liquid volume
45. Hz
46. Type of chart
48. In geometry, what is any quadrilateral in which the opposite sides and angles are equal
49. Rotor assembly contact for the brushes in an AC motor (2 wds.)
50. Maximum Usable Frequency
52. Fast Fourier transform (abbr.)
53. Abruptly limit the amplitude of a signal
56. Gun safety and education organization (abbr.)
58. Once around a circuit
59. Automatic Calibration System (abbr.)
62. Compliment to a pole in a transfer function
65. Charged particle
66. Filter type that blocks upper frequencies (abbr.)
67. Chemical symbol for copper
68. Chemical symbol for gadolinium
70. Miniature RF connector
72. Ham's code for "The net has traffic for you. Stand by."
73. Mate to an RX
74. Hub of the solar system
75. Ham abbreviation for transceiver
76. Online service
78. Test document for verifying proper function (abbr.)
80. Army-Navy specification prefix
81. Ham's code for "Take over as net control station."
82. 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
83. Minutes of Use (abbr.)
85. User Datagram Protocol
87. Ham's code for "What is the correct time?"
88. Continuous Tone Coded Squelch System (abbr.)
89. Nikola _____
90. Stock symbol for Advanced Micro Devices
2. Internet protocol (abbr.)
3. Display type
5. Equalizer (abbr.)
6. A common RS-232 serial bus command (abbr.)
7. Type of electrical wire insulation
9. Unit of admittance (pl.)
10. Parts per million (abbr.)
11. 30 kHz to 300 kHz
12. Be behind in phase
13. 1/000 of an amp (abbr.)
14. Form of energy involving the flow of electrons
16. "Texting" (abbr.)
19. Powers pneumatic devices
20. Circuit connection to a ground rod driven into the earth (2 wds.)
22. Country of RF Cafe's residency
24. Online service
26. Slang for transmitter and/or receiver (pl.)
27. Telephony over computer networks
28. Effective frontal area presented to a microwave interrogation system (abbr.)
29. Negation prefix
31. Part of this website's title
33. Chemical symbol for cobalt
36. Chemical symbol for selenium
37. Chemical symbol for nickel
40. Wideband CDMA
42. Third largest asteroid
44. Decibels above or below a dipole antenna (abbr.)
47. Filter type (abbr.)
51. Used to remove oxidation during soldering
52. Field Programmable Gate Array (abbr.)
54. Shorthand for liquid oxygen
55. One port of an amplifier
56. Silicon transistor type (abbr.)
57. Part of this website's title
60. Chemical symbol for cesium
61. Miniature threaded RF connector
63. Equalizer (abbr.)
64. Rádio Nacional de Angola (abbr.)
66. Cable termination type
67. Computer monitor (abbr., pl.)
69. Weatherproof cover for a radar antenna
71. Unit of heat
74. Signal-to-noise ratio (abbr.)
75. Temporary Engineering Change document (abbr.)
77. Line of Sight (abbr.)
79. BlackBerry or Palm for example (abbr.)
81. Unit of liquid measure (abbr.)
82. Weight (abbr.)
84. Electrical safety organization (abbr.)
86. Related to FM by a differential

See solution below


2019 Crossword Puzzle 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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Engineering & Science Crossword Solution June 16, 2019 - RF Cafe

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