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10/30/2007 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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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.

RF Cafe: Engineering & science crossword puzzle


1. PNPs and NPNs

8. Femtohenry, abbr.

10. Advanced Communication Technologies and Services

11. Liquid cooling agent

13. Sample group

14. A filter parameter (# of stages)

15. Infrared, abbr.

16. Hub of the solar system

17. Chemical symbol for praseodymium

18. Chemical symbol for argon

19. Common Gateway Interface

20. Army-Navy spec., abbr.

21. U.K-based defense contractor

22. Chemical symbol for radium

23. Logarithmic reflectivity unit

24. 36 inches

25. Synchronous Digital Hierarchy

27. Part of a FOR loop

28. Motorola's "Digital ___"

29. Institute of Electrical Engineers (U.K)

31. Chemical symbol for lanthanum

33. Direct Memory Access

35. High frequency semiconductor, abbr.

36. Type of amp used in an RX front-end, abbr.

38. Electromagnetic, abbr.

39. Antenna, abbr.

40. 10^1 numerical prefix

41. FCC Part 15 rules apply here

42. Test Point

43. Network department, abbr.

44. 1/000 of an inch

45. Semiconductor and calculator company, abbr.

46. Color #5

48. Miniature threaded RF connector

49. Sets of poles

50. Small DIP package

51. Chemical symbol for tin

52. Type of capacitor dielectrics



1. Balanced-to-unbalanced device

2. Small representative graphic

3. Push To Talk

4. Unix, Linux or Windows

5. The Microwave Office company, abbr.

6. Aircraft tracking systems

7. Solid angle units

9. Perpendicular to vertical

12. Chemical symbol for erbium

14. Used logic gates

15. Insulated Gate Bipolar Transistor

16. The GPS system is made up of them

17. A type of very low noise level amplifier

19. Chemical symbol for cadmium

21. Range of frequencies

24. Yard, abbr.

26. Common form of energy that arises from the kinetic energy of atoms and molecules

30. Chemical symbol for einsteinium

32. American National Standards Institute

34. Unit of current

35. A primary amplifier parameter

37. Modulation type, abbr.

40. 2/3 of a triac, pl.

44. Monolithic Microwave Integrated Circuit

46. Chemical symbol for gallium

47. Equivalent Series Resistance

48. Semiconductor On Insulator, abbr.

50. Type of component package, abbr.

Answer below


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Kirt Blattenberger,


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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