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RF Filter Crossword Puzzle
October 12, 2014

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.


December 28

December 21

December 14

December 7

November 30

November 23

November 16

November 9

November 2

October 26

October 19

October 12

October 5

September 28

September 21

September 14

September 7

August 31

August 24

August 17

August 10

August 3

July 27

July 20

July 13

July 6

June 29

June 22

June 15

June 8

June 1

May 25

May 18

May 11

May 4

April 27

April 20

April 13

April 6

March 30

March 23

March 16

March 9

March 2

February 23

February 16

February 9

February 2

January 26

January 19

January 12

January 5

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

RF Filter Crossword Puzzle for Octber 12, 2014 - RF Cafe

1. Illumination devices

5. Equiripple filter type (pl.)

11. _____ conductor

15. Innovative Power Products, Holbrook, NY (abbr.)

16. Chemical symbol for bromine

17. Permeability-tuned oscillator (abbr.)

18. Boob tube (abbr.)

20. Frequency division multiple access (abbr.)

22. Chemical symbol for erbium

24. Chemical symbol for californium

25. Application Specific Integrated Circuit (abbr.)

27. Opposite of a LO

28. Transformer interwinding connection

30. Unit of weight

31. Compliment to a pole in a filter transfer function

34. Negation prefix

35. Metric system (abbr.)

36. Sound frequency in the human hearing range (abbr.)

37. Time Division Multiple Access

39. Greek letter (micro)

40. Amateur Radio Direction Finding (abbr.)

41. Chemical symbol for lanthanum

42. Chemical symbol for nobelium

43. Chemical symbol for xenon

45. Chemical symbol for copper

46. Test point (abbr.)

48. Chemical symbol for argon

49. Infrared (abbr.)

50. Chemical symbol for aluminum

51. Weight (abbr.)

52. Chemical symbol for europium

53. Unit of resistance (pl.)

55. Network department (abbr.)

57. Time Division Multiple Access

59. Infrared (abbr.)

60. Positive voltage lead color

62. Voltage-current phase mnemonic

63. Compliment to a zero in a filter polynomial

65. Unit of energy

67. "Texting" (abbr.)

69. Boob tube (abbr.)

70. Move in a raster pattern

71. Type of logic gate

72. Chemical symbol for tin

74. Short for terminal

76. Opposite of a LO

77. Science of assuring operation amid dense EM background noise (abbr.)

78. Bandwidth (abbr.)

80. FCC Part 15 rules apply in this band (abbr.)

82. The gaseous state of water

83. Filter type also known as 'Cauer'

84. Basic PN junction component

1. Maximally flat filter type (pl.)

2. Chemical symbol for lithium

3. Filter type (abbr.)

4. Switch configuration (abbr.)

5. 4 GHz to 8 GHz

6. Using the moon as a passive reflector to establish a signal path; moonbounce (abbr.)

7. Chemical symbol for ytterbium

8. Chemical symbol for strontium

9. Electromotive force (abbr.)

10. 2 GHz to 4 GHz

11. Quantum electron property

12. Coordinated Universal Time (abbr.)

13. Chemical symbol for polonium

14. Filter type with equiripple in passband and stopband

19. Unit of apparent power (abbr.)

21. Cell phone (sold to Google) and IC manufacturer

23. Return-to-Zero (abbr.)

24. Chemical symbol for cobalt

26. Product offering type of Applied Wave Research (AWR), Applied Computer Sciences (ACS), Guided Wave Technology, Sunshine Design, etc.

27. Chemical symbol for mercury

29. Met all test requirements

32. 1/6 inch printer's measure

33. Chemical symbol for ruthenium

35. Filter type with high rate of out-of-band attenuation (aka 'elliptic') (pl.)

38. x, y, or z on Cartesian coordinates

40. Automated universal inductance tester - watch that 3rd letter, (abbr.)

42. 1e-6 mA

44. Chemical symbol for erbium

45. Chemical symbol for calcium

47. Chemical symbol for platinum

54. Device for allowing two surfaces to rotate wrt each other

55. Galilean moon

56. Chemical symbol for thallium

58. Steel, brass, aluminum, etc.

61. 1.602E-19 Joules

62. ECM response

63. Chemical symbol for praseodymium

64. Chemical symbol for einsteinium

66. Vacuum tube element

68. Unit of inductance (abbr.)

70. Miniature threaded RF connector

71. Lubricant

73. Negative temperature coefficient (abbr.)

75. Degree of IC sophistication (abbr.)

77. BS__ - the degree held by many RF Cafe visitors

78. Filter type that blocks frequencies below and above a specified band (abbr.)

79. Weight (abbr.)

81. Chemical symbol for molybdenum

See solution below
















RF Filter Crossword Puzzle Solution for Octber 12, 2014 - RF Cafe

Werbel Microwave (power dividers, couplers)

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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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