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10/24/2008 Engineering & Science Crossword Puzzle
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Reproduction of this puzzle without the express
permission of RF Cafe is prohibited.
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![RF Cafe: Engineering & science crossword puzzle](images/crossword-10-24-2008.gif)
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ACROSS 1. The "Ge" in SiGe 4. PNPs and
NPNs 7. Army-Navy spec 8. S21 15. Chemical symbol for
lanthanum 17. Amateur Television 18. Unit of resistance
20. Chemical symbol for radon 22. Chemical symbol for lawrencium
23. Chemical symbol for thulium 25. Chemical symbol for lithium
26. International Reply Coupon 27. Semiconductor On Insulator,
abbr. 28. World's only remaining superpower, abbr. 29.
Cellphone band above DCS; Personal communication system 30.
Unit of apparent power, abbr. 32. Chemical symbol for gallium
33. Chemical symbol for bismuth 35. Type of current 36.
Low Noise Amplifier 38. Radio Direction Finding 40. C++,
Java, BASIC, Fortran, etc. 41. Next best things to bearings
42. System established by the NTSC to adjust video display hue
values 46. Its chemical symbol is Bk 51. Coordinated Universal
Time, abbr. 53. Finite-Element Model 54. Chemical symbol
for mendelevium 56. Chemical symbol for neptunium 57.
Equalizer 59. Chemical symbol for gold 60. High voltage
resistor manufacturer in Montreal, Quebec 61. International
Telecommunications Union 62. Last statement in a BASIC program
63. Family of TTL logic 64. Unit of time 66. Chemical
symbol for chromium 67. Ham abbreviation for "distant station"
69. Chemical symbol for platinum 70. Instruments for Industry,
Ronkonkoma, NY, abbr. 72. Signal-to-noise ratio, abbr.
74. Chemical symbol for neon 75. Device for translating higher
frequencies to lower frequencies 76. Chemical symbol for
plutonium 79. kV 80. Phenomenon which causes an object
to vibrate in the presence of sound at a particular frequency |
DOWN 1. Numerical brightness of an image
pixel 2. Chemical symbol for rubidium 3. Component composition,
pl. 4. Television 5. Type of flip-flop 6. Filter that
rejects lower and higher frequencies 9. 1e-6 mA 10. Official
Space Shuttle designation, abbr. 11. 1.602E-19 Joules
12. Local Oscillator 13. The unit of electrical resistance
14. Surface mount, abbr. 16. Antenna structure that connects
directly to the feed line 19. An abrupt change in a parametric
value 21. Gun safety and education organization, abbr.
22. Basis for decibels, abbr. 24. Degree of IC sophistication
25. Display type 31. Motorola's "Digital ___" 34. RF systems
company in Rochester, NY, abbr. (now owned by GE) 36. Chemical
symbol for lutetium 37. Chemical symbol for silver 38.
Chemical symbol for ruthenium 39. Femtohenry, abbr. 42.
A type of filter designed using the image method 43. Chemical
symbol for ruthenium 44. Unit of heat 45. Type of current
flow 46. Interference caused by a station operating on an
adjacent channel 47. Part of this website's title 48.
Send Morse Code 49. 1/6 inch printer's measure; Electromagnetic
50. It is the "M" in SMA 52. Unintended frequency products
from a mixer 55. Logarithmic units of power 56. Negative
temperature coefficient, abbr. 58. Ham's code for "You are
excused from the net." 59. Application Service Provider,
abbr. 65. Organization for former military members 68.
Antenna, abbr. 70. Galilean moon 71. One port of an amplifier
72. Chemical symbol for strontium 73. One component of a
complex number, abbr. 77. Chemical symbol for thallium
78. Chemical symbol for manganese |
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See solution below
![](images/crossword-10-24-2008s.gif)
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