January 11, 2009 Engineering & Science Crossword Puzzle

Take a well-deserved break and try your hand at some of these goodies. Every word in the RF Cafe crossword puzzles is specifically related to engineering, mathematics, and science. There are no generic backfill words like many other puzzles give you, so you'll never see a clue asking for the name of a movie star or a mountain on the Russia-China border.

All of these crossword puzzles were created using the fabulous Crossword Express (now called "Magnum Opus") software.

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Cruciverbalist:

A cruciverbalist is a person who is skilled at creating or solving crossword puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and "verbalist" from "verbal," indicating a person who deals with words. cruciverbalists are often responsible for designing crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and the techniques used in constructing and solving crosswords. They aim to make puzzles that are both challenging and enjoyable for crossword enthusiasts.

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
ACROSS 1. Asynchronous Communication Interface Adapter 5. Compound used as the frequency determining element in microwave oscillators 7. Basic element 11. Luminous atmospheric phenomenon 13. Set a steady-state voltage 14. Chemical symbol for radium 15. Ham radio operator 18. Chemical symbol for chlorine 19. Signal amplitude degradation due to inefficiency 21. Cambridge _____, technical book publisher 22. Cable television, abbr. 23. Moon of Saturn discovered in 1672 25. Error checking scheme, abbr. 26. No insulation 27. 1/000 of an amp 28. Akin to an EE, CE, AE, etc. 29. 10^1 numerical prefix 30. Morse Code for "from" 32. Innovative Power Products, Holbrook, NY, abbr. 34. Line of Sight; Linux Operating System 36. Filter type 39. Performing a calculus function 40. Signal-to-noise ratio, abbr. 41. The system than converts common website names to IP addresses, abbr. 42. Negation prefix 43. Millihenry, abbr. 45. 1.602E-19 Joules 46. Kilocycles, abbr. 47. European equivalent to the U.L. 48. Volts divided by resistance 51. The cell band above DCN 53. Online auction site 56. Volt, meter, pint, pound, eg. 57. Joined a male and a female connector 59. Quickly changing portion of waveform 60. Ham abbreviation for "distant station" 61. One type of filter construction used in the 500 MHz to 1.5 GHz range 63. Army-Navy spec 64. Sets the flip-flop output to "0" 66. College grounds 68. Unit of energy, pl. 69. Ham's code for "Entire net stand by." 70. Logical negation, pl.	DOWN 1. Borealis or Australis 2. Hang the program 3. Galilean moon 4. Amateur Radio Association 6. Point of electrical contact between circuits 7. Powers pneumatic devices 8. Chemical symbol for tantalum 9. International phonetic alphabet letter "O" 10. Transitioned from solid to liquid phase 12. Unit of current 13. Data transmission pathway 16. Portion of a circle 17. A keyboard key 20. Chemical symbol for selenium 22. Chemical symbol for calcium 24. Units of current 26. Make equal 27. Short for modulator/demodulator 31. Symbol of the U.S.A. 32. Bands between RF and baseband 33. Circuit for firing a magnetron, abbr. 34. Semiconductor lamp 35. Official Space Shuttle designation, abbr. 37. Permeability-Tuned Oscillator 38. Heatsink feature 44. A radio operator’s name 47. Constellation : The swan 49. A circuit that takes two or more input signals, and produces an output that includes the sum and difference of those signal frequencies 50. Chemical symbol for platinum 51. Programmable logic device, abbr. 52. Japanese semiconductor & equipment manufacturer 54. Chemical symbol for beryllium 55. Change connector type 57. Akin to EEs, CEs, AEs, etc. 58. Type of data conversion device, abbr. 61. Stock symbol for Harris Communications 62. Computer communication scheme 65. Chemical symbol for silver 67. Chemical symbol for molybdenum
See solution below