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Copyright: 1996 - 2024 Webmaster:
Kirt Blattenberger,
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 typing 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.
My Hobby Website:
AirplanesAndRockets.com
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January 21, 2009 Engineering & Science Crossword Puzzle
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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.
2021 | 2020
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| 2001 | 2000
| Sudoku
Reproduction of this puzzle without the express
permission of RF Cafe is prohibited.
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ACROSS
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.
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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
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See solution below

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