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5/17/2007 Engineering & Science Crossword Puzzle

Visit the Crossword Express website - RF CafeTake 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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RF Cafe: Engineering & science crossword puzzle

ACROSS

1. Part of a directive antenna that derives energy from mutual coupling with the driven element, 2 wds., pl.

8. U.S. Spectrum allocation agency

9. Logic gates

10. Degraded or destroyed performance

15. The "T" in T&M

17. High power density battery chemistry, abbr.

19. One of four lines in a magnetic memory array

20. Prefix meaning magnetic

22. Chemical symbol for cesium

23. A Greek letter in the spherical coordinate system

24. Chemical symbol for selenium

25. The constellation in which Canopus is located

27. Lose phase lock

30. Have a positive phase wrt a reference

31. A measure of receiver quality, abbr.

32. Electromagnetic, abbr.

34. ___/IP

35. Chemical symbol for plutonium

36. ESD protective apparel

39. Complex numbers have real and imaginary of these

41. Receiver power level circuitry, abbr.

42. A type of chemical radical

43. The part of a circle enclosed between an arc and a chord

44. Just above DCS in the spectrum

46. Programmable logic device, abbr.

48. Inventor of the high voltage generator that powers the Jacob's Ladder

 

DOWN

2. Part of this website's title

3. An angle has less than 90 degrees

4. Chemical symbol for scandium

5. Chemical symbol for molybdenum

6. This is returned when software hits a snag

7. Unit of time, abbr.

10. Class of spread spectrum, abbr.

11. Automated test equipment, abbr.

12. Supplier of high power linear and pulsed RF, microwave and millimeter wave amplifiers in San Marcos, CA

13. 30 Hz to 300 Hz

14. Thread cutting tools

16. Shaft position sensors

18. A physical quantity defined as force per unit area

19. Subject a circuit to extreme operation

21. A chemical compound containing an oxygen atom and other elements, pl.

25. Chemical symbol for aluminum

26. Chemical symbol for gallium

28. 30 kHz to 300 kHz

29. Chemical symbol for praseodymium

33. The amount of matter that a body contains

35. Component

37. PCB interconnect

38. Type of chart

39. Circuit for firing a magnetron, abbr.

40. Engineer who experimented with extremely high voltages

44. Chemical symbol for lead

45. Chemical symbol for strontium

46. Chemical symbol for praseodymium

47. 10^1 numerical prefix


Answer below

 

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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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