For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, 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. One port on a FET
5. Half of a DIP
8. 1/12th of a year
12. Type of spread spectrum that does not use frequency hopping (abbr.)
13. Request for information from a database
14. Defense Advanced Research Projects Agency
15. Decimeter (abbr.)
17. Akin to an EE, CE, AE, etc.
19. Chemical symbol for neon
20. Last stage in a transmitter (abbr.)
22. Equalizer (abbr.)
24. Computer interconnection scheme (abbr.)
26. Type of tank circuit (abbr.)
28. Science of assuring operation amid dense EM background noise (abbr.)
29. International QSL forwarding bureau
31. Subatomic particle having a mass between that of an electron and a proton
32. Voice of America
33. Chemical symbol for radium
35. "Texting" (abbr.)
37. Chemical symbol for platinum
39. With 27D, this website's title
40. Chemical symbol for arsenic
42. Network department (abbr.)
44. _____-Doppler radar
45. Translated higher frequencies to lower frequencies
47. A 3rd-order polynomial
48. Morse Code for "from"
49. Ratio of circumference to diameter
50. Chemical symbol for argon
51. Mate to an RX
53. ___/IP scheme for networked connectivity
55. Infrared (abbr.)
57. Total radiated power (abbr.)
58. Negatively charged ion
60. Change connector type
61. Finite Element Analysis (abbr.)
62. Unit of apparent power (abbr.)
64. Signal-to-noise ratio (abbr.)
66. Chemical symbol for manganese
68. Chemical symbol for silicon
69. Chemical symbol for tin
71. Band between RF and BB
73. A BPF specification (abbr.)
74. Things in a bill of material
76. The stuff in the solder core
78. Temperature-compensated crystal oscillator (abbr.)
80. Heavenly body having a tail
81. BER, 8 bits at a time
82. Like an inductor coil with a ferrite form | 1. Slang for Ursa Major
2. Analog-to-Digital (abbr.)
3. Integrated Services Digital Network (abbr.)
4. Stock symbol for National Semiconductor
5. Add two or more inputs
6. Institute of Electrical and Electronics Engineers
7. Chemical symbol for praseodymium
8. ELI the ICE ___
9. Used logic gates
10. Chemical symbol for neptunium
11. Mathematical expansion (2 wds.)
16. Providing a complex conjugate impedance match to the end of a transmission line
18. Electron beam pattern method used in CRTs (2 wds., pl.)
21. A non-commercial radio service as set by a recognized cognizant government agency (2 wds.)
23. Ham's code for "Shall I send more slowly?"
24. Wired Equivalent Privacy (abbr.)
25. Chemical symbol for nobelium
27. 39A + ____, the world's best engineering website
30. Unit of time (abbr.)
34. Half of the diameter (pl.)
36. Referring to a right triangle, the trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse, pl.
38. Relating to sound
41. System On Chip
43. Boob tube (abbr.)
44. Peak envelope power (abbr.)
46. Opposite of I.D.
47. Cable television (abbr.)
52. Type of logic gate
53. Time Division Multiplexing
54. Min-to-max voltage of a waveform (abbr.)
56. ______ cosine filter
59. Unit of time (abbr.)
63. BSEE + 2 years
65. Tool for holding parts while working on them
67. Voltage-controlled crystal oscillator (abbr.)
70. Nordic Mobile Telephone
72. Type of digital filter (abbr.)
73. U.S. Spectrum allocation agency
75. Chemical symbol for thulium
77. Modern battlefield technique (abbr.)
79. Type of logic gate |
See solution below
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