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RF Cafe Engineering & Science Crossword Puzzle
October 29th, 2023
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As with my hundreds of previous engineering and science-themed crossword puzzles,
this one for October 29th uses only clues and terms associated with engineering,
science, physical, astronomy, mathematics, chemistry, etc., which I have built up
over more than two decades. Many new words and company names have been added that had
not even been added to the world's technical lexicon when I started in the year 2002.
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. 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. The technically inclined cruciverbalists amongst us will appreciate
the effort. A full list of all RF Cafe crosswords is at the page bottom. Enjoy!
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 for October 29, 2023 - RF Cafe](images/radio-engineering-crossword-puzzle-rf-cafe-10-29-2023.gif)
<click for full size to print>
1. Causing a voltage or current waveform to
gradually die out 6. Generic term for a capacitor or inductor 11. Software
drafting tool (abbr.) 12. Sound frequency in the human hearing range (abbr.)
13. Switch configuration (abbr.) 16. Unit of inductance (abbr.) 17.
Keyboard key 19. Word used in describing 2-D and 3-D object dimensions; i.e.,
10 mm __ 25 mm 20. A common RS-232 serial bus command (abbr.) 21.
Elementary particle 22. Type of digital filter (abbr.) 24. A common
battery cell size 25. milliampere-hour (abbr.) 27. Filter type that blocks
upper frequencies (abbr.) 29. Peak envelope power (abbr.) 31. Factor of a
polynomial 32. A coherent monochrome light source (pl.) 35. Network
configuration type (pl.) 37. Unit of inductance (abbr.) 38. Resistor used
to drain voltage off of a high potential supply (pl.) 40. Electrical safety
organization (abbr.) 41. Centimeter (abbr.) 43. Exponent that returns the
original number 45. Discipline for aircraft navigation in low visibility
environments (abbr.) 47. Chemical symbol for radium 48. Sound frequency in
the human hearing range (abbr.) 49. Device under test (abbr.) 50. The cell
band above DCN 51. Switch position 52. Chemical symbol for iron 53.
Between-series connector (pl.) 58. Chemical symbol for lithium 60. The
highest level Amateur Radio license rating 62. Does not reference the power
supply outputs to ground 63. This is required to causes a change in the
motion of a body 64. Attenuator 65. Internet protocol (abbr.) 66. A
keyboard key 67. Min-to-max voltage of a waveform (abbr.) 69. Yttrium
Aluminum Garnet 71. Sharp bend in I-V curve 73. "Texting" (abbr.) 74.
10E1 numerical prefix 76. A feedback scheme to level out the receiver audio
volume (abbr.) 78. Unit of capacitance (abbr.) 79. European
Telecommunications Standards Institute (abbr.) 80. Weight (abbr.) 81.
Heterojunction Bipolar Transistor 82. Run through compliance testing 83. A
condition in which "free" or dissolved oxygen is present in water |
1. 24 hours 2. Analog-to-Digital (abbr.)
3. Radio signal route (pl.) 4. Bands between RF and baseband 5. Global
System for Mobile Communications (abbr.) 6. Stock symbol for Raytheon 7.
Software layer that allows a system to be programmed via a defined set of
commands (abbr.) 8. ICs 9. Opposite of I.D. 10. Government program to
bring electricity to farms (abbr.) 11. Unlicensed FCC Part 95 realm for
personal and business radio use (abbr.) 14. Short waveform excursion from a
reference state 15. Added an impurity to a semiconductor 18. Chemical
symbol for lanthanum 20. Stream of electrons (2 wds.) 23. S11 (2 wds.)
25. Minutes of Use (abbr.) 26. Wireless local loop (abbr.) 28. Airport
Surveillance Radar (abbr.) 30. Programmable logic device (abbr.) 31. Web's
most popular radio frequency engineering site (2 ltrs. + 1 wd.) 33. Archaic
term for an outdoor antenna 34. Ctr+Alt+Del 36. Mr. Arrhenius' first name
38. Electron beam particle 39. Halves of DIP's 42. 300 kHz to 3 MHz 44.
Greek letter used for frequency 46. A BPF specification (abbr.) 47.
Read-only (abbr.) 52. Network file transfer protocol (abbr.) 54. Design
for Manufacturability (abbr.) 55. The tip of a PCB probe 56. They go on
reels for high volume production 57. Readability, Signal, and Tone (QoS
report type) 59. International Reply Coupon (abbr.) 61. Change connector
type 63. 10E-15 numerical prefix 67. Last stage in a transmitter (abbr.)
68. Common plastic insulation type (abbr.) 70. Ground fault interrupter
(abbr.) 71. Send Morse Code 72. Electronics Industry Association (abbr.)
73. Measure of source / load mismatch (abbr.) 74. Relative power level unit
(abbr.) 75. PC follower 77. European equivalent to the U.L. 81.
Opposite of a LO |
See solution below
![Engineering & Science Crossword Solution October 29, 2023 - RF Cafe](images/radio-engineering-crossword-solution-rf-cafe-10-29-2023_small.gif)
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