For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to RF, microwave, electrical and mechanical engineering, mathematics, chemistry, physics, astronomy, mathematics, and other technical words. You will never be asked the name of a movie star unless he/she was involved in a technical endeavor (e.g., Hedy Lamarr). Enjoy! Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words 
1. Ratio of the maximum carrier frequency deviation to the modulating frequency at a given instant in an FM transmitter (2 wds.)
12. Chemical symbol for niobium
13. Software function selection mechanisms
14. Filter type that blocks frequencies in a specified band (abbr.)
16. Unit of frequency (archaic, abbr.)
18. "Texting" (abbr.)
21. Logic gate output configuration (abbr.)
22. Ultra High Voltage (abbr.)
24. Chemical symbol for thallium
25. Science of assuring operation amid dense EM background noise (abbr.)
27. Degree of IC sophistication (abbr.)
28. The "S" in SOIC
30. Change from one thing into another
31. Front end of a rocket (pl.)
34. Internet protocol (abbr.)
35. Permeability-tuned oscillator (abbr.)
37. Mass unit (abbr., pl.)
38. Chemical symbol for radon
39. Half of DSB
41. Current-voltage phase mnemonic
42. Web page language
44. Parameter that is a figure of merit for receiver performance in presence of multiple signals (abbr., pl.)
47. Turn on the computer
49. Chemical symbol for gallium
50. System On Chip
53. Color quality
54. Code for a type of electrical wire insulation (abbr.)
56. Chemical symbol for cadmium
57. Amateur radio enthusiast
59. Type of chart
60. _____ Percy Maxim, founder of the ARRL
62. The LM741 was the first
63. Curve formed by a point which moves according to a mathematically defined rule
66. Galilean moon
67. Powers pneumatic devices
69. Type of digital filter (abbr.)
70. Chemical symbol for lead
71. Curly-Q type light bulb (abbr.)
73. Multiplexer (abbr.)
74. RF ____, the world's best engineering website
76. _____&Schwarz
79. Thread cutting tools
81. Electrical safety organization (abbr.)
82. Volt-ohmmeter (abbr.)
83. Exponent that returns the original number
84. Shorthand for liquid oxygen
85. Chemical symbol for strontium | 2. Switch position
3. Logarithmic unit of ratio (abbr., pl.)
4. Modulation type (acr.)
5. Temporary Engineering Change document (abbr.)
6. Unwanted mixing of two or more RF signals that creates unintended frequencies
7. One port of an amplifier
8. Unit of time (abbr.)
9. Logarithmic unit of voltage (abbr.)
10. Chemical symbol for erbium
11. Decimeter (abbr.)
15. Ham-ese for Young Lady
17. Applied + _____________ + Sciences, LINC2 RF system analysis software
19. Transitions from solid to liquid phase
20. Type of component package (abbr.)
22. Unit of time (abbr.)
23. Device for allowing two surfaces to rotate wrt each other
24. Junction between two different metals that produces a voltage related to a temperature difference (pl.)
26. Centimeter (abbr.)
27. Unit of inductance (abbr.)
28. Chemical symbol for silicon
29. Filter type that blocks upper frequencies (abbr.)
32. Unix, Linux or Windows (abbr.)
33. Chemical symbol for tin
36. Unix, Linux or Windows (abbr.)
37. Unit of frequency (archaic, abbr.)
40. Filter type that blocks frequencies in a specified band (abbr.)
41. Network department (abbr.)
42. Chemical symbol for mercury
43. Unit of time (abbr.)
45. Unit of inductance (abbr.)
46. One component of a complex number (abbr.)
47. Bandwidth (abbr.)
48. Time delay (abbr.)
51. Describes a region on a semiconductor that has a linear and symmetric I-V curve
52. Chemical symbol for calcium
54. Semiconductor and calculator company (abbr.)
55. The shape of a circularly polarized antenna
58. Chemical symbol for molybdenum
59. Min-to-max voltage of a waveform (abbr.)
60. Opposite of a LO
61. A common battery cell size
64. Type of logic gate
65. Chemical symbol for antimony
68. Part of this website's title
69. Upper frequency (abbr.)
72. Chemical symbol for lawrencium
73. Akin to an EE, CE, AE, etc.
74. Chemical symbol for copper
75. 1.602E-19 Joules
77. Chemical symbol for holmium
78. Morse Code for "from"
79. Ham abbreviation for "distant station"
80. Chemical symbol for strontium |
See solution below
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