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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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everythingRF RF & Microwave Parts Database (h1) - RF Cafe

5/6/2003 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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Engineering & science crossword puzzle

ACROSS

1 Geometrical term for any four-sided figure

10 Programmable logic device

11 _____rule, pre-HP

12 Keyboard key

14 Transformer interwinding connection

17 Miniature RF connector

18 Digital pattern coding type

20 Technical _____, military manual

21 Complex number identities are named after him

23 Genetic material

24 Resistor vendor in Berne, IN

26 Government program to bring electricity to farms

28 Chemical symbol for iron

29 Type of flip flop

30 Roentgen equivalent Physical, abbr.

31 Test equipment manufacturer

33 Type of current

34 Max or min voltage of a waveform

35 Lunar 'seas'

37 Type of current flow

39 Chemical symbol for beryllium

40 Type of average

41 Receive

43 30 kHz to 300 kHz

45 Switch position

46 Synchronous Digital Hierarchy, abbr.

47 High-level pilot's license

48 Galilean moon

49 Class of spread spectrum, abbr., abbr.

51 Hermetic integrity devices

53 ECM response

55 Connect a ring terminal

57 IP-to-URL converter

58 Cell phone manufacturer

59 Workplace safety group

61 Bottom leg of triangle

62 Silicon transistor type

64 Digital Communication System

67 Modern battlefield technique

68 Category of model aviation, abbr.

70 Temperature Coefficient

72 Modulation type

73 Rudder opposing aileron

71 Type of model airplane control system, abbr.

DOWN

1 Quality Assurance, abbr.

2 "Extreme" prefix

3 Type of flip-flop

4 Precision landing system

5 Diode circuit to restrain voltage input

6 Data conversion device

7 Test equipment, abbr.

8 Summer

9 Front edge of a wing, abbr.

10 Ratio of circumference to diameter

13 Local Oscillator

15 Analog-to-digital

16 Maximum voltage in a waveform

18 To add bushings

19 Type of model airplane control system, abbr.

20 Exponent that returns the original number

22 Positive voltage lead color

23 Above audio but below microwave

24 Hung the program

25 Types of printed inductors

27 Type of current flow

29 Type of flip flop

32 Last stage in a transmitter

34 Pre-401k

35 Multichannel multipoint distribution service, abbr.

36 Advanced Communication Technologies and Services

38 Did it with a mouse

39 Inventor of the pre-quantum atomic model

40 Flip-flop type

42 Peak voltage, abbr.

44 More than one focus

49 Filter specification, abbr.

50 Short Message Service

52 Hybrid coupler vendor in East Syracuse, NY

53 Electrical overstress, abbr.

54 1/000 of an amp

56 Unit of acidity

58 1e-6 mA

60 Army-Navy spec, abbr.

61 Armored cable type

62 Semiconductor manufacturer

63 Abbreviation for power

65 Software engineering tool

66 Surface mount device

68 Start frequency, abbr.

69 Start frequency, abbr.

70 For x = 1 __ 100 Do

Answer below

Copper Mountain Technologies (VNA) - RF Cafe

Amplifier Solutions Corporation (ASC) - RF Cafe