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2/11/2008 Engineering & Science Crossword Puzzle

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

RF Cafe: Engineering & science crossword puzzle


1. A semiconductor switching device with four layers of alternating N and P-type material.

8. Transmit Incremental Tuning, abbr.

9. End Of Transmission

10. Type of Internet e-mail scheme, abbr.

12. Chemical symbol for platinum

13. Direct Digital Synthesis

14. Electromagnetic, abbr.

16. Band between RF and BB

18. Min-to-max voltage of a waveform, abbr.

20. Army-Navy spec

21. One input to a mixer, abbr.

22. Display that came before the LCD

24. Deutsche Industrie Normenausschuss

25. An angle that has more than 90 degrees, but less than 180

26. The "M" in EMF

28. Applied Computational Sciences, abbr.

30. Be behind in phase

32. 300 Hz to 3 kHz

33. Jack Kilby's and Robert Noyce's invention that changed the world, abbr.

34. Ham abbreviation for "distant station"

36. Akin to an EE, IE, CE, AE, etc.

37. Chemical symbol for radium

38. Main brain of a computer, abbr.

40. Chemical symbol for calcium

42. Radar type used for making "blind" landings, abbr.

43. A receiver performance specification, abbr.

44. Voltage-Controlled Oscillator

45. Like a 3-way power divider, hybrid coupler, circulator, etc.


1. End of a soldering iron

2. Web page language

3. Positive voltage lead color

4. Its chemical symbol is I

5. Official Space Shuttle designation, abbr.

6. Infinite resistance

7. Type of memory

11. Generally, the region of the radio spectrum above 1 GHz

15. Said of two functions that arrived at a common point

17. Chemical symbol for francium

19. Phase state between liquid and solid

20. Popular drafting software

21. Chemical symbol for lithium

23. Electronic assembly transport containers

24. Implement used to bore holes

27. Borland's programming language

29. Chemical symbol for californium

31. Modulation type, abbr.

33. International Amateur Radio Union

35. Transceiver, abbr.

37. Type of memory

38. Amplifier vendor in Santa Clara, CA

39. User Datagram Protocol

41. Logic family

See solution below

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 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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