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. A feed line with two conductors having equal but opposite voltages, with neither conductor at ground potential (2 wds.)
12. Gigantic star in Cetus
13. The "O" in ROM
14. Front end of a rocket
16. PC follower
18. Test point (abbr.)
20. With 29 Across, this website's title
22. Type of current
23. Chemical symbol for beryllium
24. Greek letter
26. Automatic Testing, Evaluation & Reporting (abbr.)
29. With 20 Across, the world's best engineering website
31. Stock symbol for Harris Communications
32. Communications pairing between transmitter and receiver
34. Colorado Springs military school (abbr.)
35. Readability, Signal, and Tone (QoS report type)
36. One factor of a polynomial
37. Amateur radio abbreviation for the Oceania region (abbr.)
38. Intel x86 command for " jump if above"
40. Type of high frequency diode (abbr.)
43. Unit of inductance (abbr.)
44. Chemical symbol for arsenic
45. Mass unit (abbr.)
47. Deutsche Industrie Normenausschuss
49. Chemical symbol for arsenic
50. High-speed logic family
52. Analog-to-Digital (abbr.)
53. Chemical symbol for iron
54. Printer output resolution unit (abbr.)
55. Ratio of circumference to diameter
56. Radio Amateurs of Canada (abbr.)
57. Type of current flow (abbr.)
58. Greek letter
59. Unit of time (abbr.)
60. PCB interconnects
63. Chemical symbol for californium
65. Modulation type (abbr.)
67. Target indication on a radar display
69. Add solder to tip of iron
70. Wire diameter unit (abbr.)
72. An overcurrent protection device
74. Stock symbol for Advanced Micro Devices
75. Electronic Variable Optical Attenuator (abbr.)
76. Computer Assisted Design and Development
78. Push to Talk (abbr.)
79. Unit of time (abbr.)
80. Time delay (abbr.)
81. Chemical symbol for tin
83. Chemical symbol for erbium
85. Chemical symbol for selenium
86. Unit of energy (pl.)
88. High electron mobility transistor
90. Move in a raster pattern
91. Ability of a substance to store electrical energy in an electric field | 1. The "B" in BER
2. Advanced Research Projects Agency (abbr.)
3. Chemical symbol for lanthanum
4. Chemical symbol for nobelium
5. Carrier-to-noise ratio (abbr.)
6. 30 Hz to 300 Hz
7. Chemical symbol for dysprosium
8. One port of an amplifier
9. Current summing point
10. A keyboard key
11. Monte-_____ analysis
15. Determines proper functionality
17. Circuit substrate type where conductors and passive components are 'screened' on and fired (2 wds., pl.)
19. Term for the sharpness of a displayed image
21. Electron beam pattern method used in CRTs (2 wds.)
23. Transmits a signal
25. Switch position
27. Chemical symbol for tantalum
28. Type of data storage IC
29. Type of computer display (abbr.)
30. Unit of length (abbr.)
31. Chemical symbol for holmium
33. Unit for 1,000 watt-seconds (abbr.)
36. Chemical symbol for rhodium
39. Type of data conversion device (abbr., pl.)
41. International phonetic alphabet letter "P"
42. Application Specific Integrated Circuit (abbr.)
43. Type of programmable device (abbr.)
46. Electronics manufacturer with "meatball" logo
48. Internet protocol (abbr.)
51. Chemical symbol for calcium
52. A common battery cell size
58. 8 GHz to 12.5 GHz
59. Min-to-max voltage of a waveform (abbr.)
61. Rádio Nacional de Angola (abbr.)
62. Science of assuring operation amid dense EM background noise (abbr.)
64. Small unit of capacitance (abbr.)
66. Metric length unit
68. Opposite of O.D.
69. Boob tube (abbr.)
71. Chemical symbol for mendelevium
73. One type of electron spin
75. Enhanced Datarates for Global Evolution
77. Digital Enhanced Cordless Telephone
80. Total radiated power (abbr.)
81. Adjust a pot
82. Nordic Mobile Telephone
84. Straight line emanating from a point source
87. Chemical symbol for strontium
88. Opposite of a LO
89. Semiconductor and calculator company (abbr.)
90. Chemical symbol for silicon |
See solution below
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