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January 21, 2009 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: Science & Engineering & Science Crossword Puzzle


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

8. Special diode that can be switched, abbr.

9. Variable crystal oscillator, abbr.

10. Circuit containing a mixture of technologies, pl.

15. Attenuator topology

17. Family of ICs with a certain component density level, abbr.

19. Min______ and Max_____, in a Karnaugh map

20. 1/1000000 prefix

22. Chemical symbol for einsteinium

23. Deutsche Industrie Normenausschuss

24. Chemical symbol for polonium

25. 1's and 0's

27. Increase voltage linearly

30. Unit of length equal to 5.5 yards, pl.

31. Set of poles

32. One type of electron spin

34. Minutes of Use

35. Semiconductor and calculator company, abbr.

36. Effect (named after its discoverer) that is the variation in the width of the base in a BJT due to a variation in the applied base-to-collector voltage

39. Precipitate

41. Digital Enhanced Cordless Telephone

42. Society of Civil and Structural Engineers

43. Devices on an axle used to hold a wheel in place, pl.

44. Broadband over Power Lines, a Ham's nemesis

46. Automatic Send-Receive

48. Highest frequency at which a vertically incident radio wave will return from the ionosphere, 2 wds.


2. Type of flip-flop

3. In geometry, what kind of an angle has less than 90 degrees

4. Chemical symbol for strontium

5. 1e3 uV

6. Cabinet manufacturer in Cincinnati, OH

7. Chemical symbol for nobelium

10. Amateur radio operators

11. 36 in., pl.

12. One divided by a number

13. Digital Voltmeter

14. Describes when a synchronous motor loses "lock"

16. Physical quantity defined as force per unit area

18. Constellation : The scorpion

19. Vacuum tube with three control grids

21. Resistor vendor in Skokie, IL

25. Chemical symbol for bromine

26. Time delay, abbr.

28. A common battery cell size

29. Chemical symbol for praseodymium

33. Type of programmable device, abbr.

35. Total Access Communication System

37. Change connector type

38. Elemental compound used for microwave frequency reference oscillators, abbr.

39. Bluetooth modules & ICs vendor in Richardson, TX

40. One of four lines used in ferrite core memories

44. Chemical symbol for bismuth

45. Chemical symbol for lithium

46. Chemical symbol for gold

47. Chemical symbol for radon

See solution below

RF Cafe: Crossword solution

Amplifier Solutions Corporation (ASC) - RF Cafe
Windfreak Technologies Frequency Synthesizers - RF Cafe
Lotus Communication Systems Modular RF Component Building Blocks - RF Cafe
Innovative Power Products Passive RF Products - RF Cafe
withwave microwave devices - RF Cafe

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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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