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BSEE - KB3UON

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...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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AirplanesAndRockets.com

3/6/2005 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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RF Cafe: Engineering & science crossword puzzle

ACROSS

1 Branch of mathematics

7 Its chemical symbol is Zn

11 Thin-film hybrid and discrete microwave and millimeter-wave components vendor in Sunnyvale, CA

13 An undesirable mixer output

16 Department of Defense

17 Logical negations

20 Component of product cost, abbr.

21 Analog-to-Digital

23 World's only remaining superpower

24 Unit of weight

25 3 MHz to 30 MHz

26 Network department, similar to IT

27 Increase voltage linearly

29 Russian space probe which visited Halley's comet

31 Beryllium Oxide

32 Next to

33 Electron beam (type of ray)

35 Part of this website's title

36 This might be stored as a JPG or GIF

37 Courses taken from point A to point B

38 Test Equipment

39 Halves of DIPs

40 Army-Navy spec

41 Modern battlefield defense method, abbr.

43 Technical drawing structure

45 Monolithic Microwave Integrated Circuit

46 Same as 34 down

47 Galilean moon

48 Resistor vendor in Berne, IN

49 Last stage in a transmitter

50 One component of a complex number, abbr.

51 Lubricant

53 Units of admittance

55 Logic family

57 RF computer network

59 Optical device that produces images by reflection

62 Junk e-mail

63 Elementary particles

DOWN

1 Type of current flow

2 Semiconductor lamp

3 Collection

4 Last word in a subroutine, pl.

5 Chemical symbol for beryllium

6 Mate to a TX

8 Network department, abbr.

9 Silicon transistor type

10 Unit used for measurement of radioactivity

12 PC follower

14 LC circuits exhibit these

15 Fuel-air mixing device

17 Exploding star

18 Exponent that returns the original number

19 Rotary switch rotation mechanism, pl.

22 1/366th of roughly 1/4 of the years

28 Metric length unit

30 It contains plotted data points

31 Data transmission pathway

33 Opposite of top

34 Part of a FOR loop

36 Modulation technique, abbr.

37 Ratio of circumference to diameter

39 Adjusts a pot

40 Powers pneumatic devices

42 Inductors

44 Official engineering change document, abbr.

45 Collection of short operating system commands

49 Component

52 Use fine abrasive to achieve close tolerance fit

54 Symbol for mercury

56 Unit of heating & cooling capacity

58 1e-6 mA

59 Akin to an EE, AE, or PE

60 Internet Protocol

61 Type of flip-flop

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

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