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Physics & Engineering Crossword Puzzle w/Headlines
March 13, 2016

For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics, chemistry, physics, and other technical words. You will never be asked the name of a movie star unless he/she was involved in a technical endeavor (e.g., Hedy Lamarr). Clues in this week's puzzle with an asterisk (*) are directly from this week's "High Tech News" column on the RF Cafe homepage. Enjoy!

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

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Physics & Engineering Crossword Puzzle for March 13, 2016 - RF Cafe

1. Mathematical operation oncerned only with the remainder when one number is divided by another

5. Early German aircraft designer

10. Stock symbol for National Instruments

11. *E-mail Inventor ___ Tomlinson Dies at 74

13. Ham's code for "You are excused from the net."

14. A measure of receiver quality (abbr.)

15. Oscillator type that is referenced to an external source (abbr., pl.)

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

20. Rádio Nacional de Angola (abbr.)

22. Trigonometric function equal to the ratio between the side opposite a given angle, and the hypotenuse

24. Opposite of a LO

26. Minutes of Use (abbr.)

27. Reliability measure (abbr.)

28. Negative temperature coefficient (abbr.)

29. Vacuum tube element

31. Half of a DIP

33. Chemical symbol for europium

34. *The ___ is About to Ruin AM Radio (abbr.)

35. Current-voltage phase mnemonic

36. Unit of inductance (abbr.)

37. Colorado Springs military school (abbr.)

39. Type of e-mail address system (abbr.)

40. Unit of length (abbr.)

41. Type of memory

42. Amateur radio abbreviation for the Oceania region (abbr.)

43. High Definition Television

45. Minimal Shift Keying (abbr.)

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

49. Digital transmission figure of merit (abbr.)

51. Wrapped plastic insulation around an electrical joint

52. Type of modulation (abbr.)

53. Software drafting tool (abbr.)

54. Chemical symbol for chlorine

55. Voice of America

56. Filter type that blocks upper frequencies (abbr.)

57. It can follow an MS

61. International phonetic alphabet letter "I"

63. The "R" in ARRL

65. Voltage-current phase mnemonic

67. *Creation of 1st Practical _______-Based Laser

69. A disk operation

71. Cellphone band below PCS

73. Type of logic gate (pl.)

74. Multifunctional silicon devices (abbr., pl.)

76. 36 in. (abbr., pl.)

78. 30 Hz to 300 Hz

80. *Light Helps Transistor _____ ______ Faster (2 wds.)

83. Google, Yahoo, Bing, etc.

84. *75% of U.S. Drivers Fear ____-_______ Cars (2 wds., hyph.)

87. FCC's Universal Licensing System (abbr.)

89. Programmable Logic Device (abbr.)

91. Voltage-current phase mnemonic

92. Type of data conversion device (abbr.)

95. Add two or more inputs

97. Stock symbol for Dell Computer

98. Greek letter used for wavelength (pl.)

102. Crystal filter type (abbr.)

103. Software object reference name

105. *_____ Announces 3rd Release of 2016-2020 Amateur Extra Question Pool (abbr.)

108. Type of digital filter (abbr.)

109. Type of flip-flop

110. High-speed logic family

111. Chemical symbol for einsteinium

112. Yttrium Aluminum Garnet

114. 30 kHz to 300 kHz

116. Metal or plastic rod that connects a potentiometer wiper to a knob

117. Antenna (abbr.)

118. Chemical symbol for beryllium

120. Image file format name extension

122. Cable television (abbr.)

124. Unit of liquid measure (abbr.)

125. ARRL's magazine

126. Chemical symbol for francium

127. Part of a male connector

129. *III-V ___ Transconductance Record (abbr.)

131. Unit of time (abbr.)

132. International Telecommunications Union

133. Silicon transistor type

134. Local Oscillator (abbr.)

135. Cable termination type

137. Divide a signal into into chunks for sampling

139. Cooling device

140. Amateur Radio Direction Finding (abbr.)

141. Common gateway interface (abbr.)

143. Chemical symbol for tantalum

144. Fuse metals together using heat

146. Low Noise Amplifier (abbr.)

147. Greek letter used for frequency

149. A type of average

151. Time delay (abbr.)

152. BER, 8 bits at a time

153. Once around a circuit

156. The "C" in CDMA

158. Describes an amplifier capable of tolerating any complex source/load impedance

159. Degrade or destroy performance

2. Unix, Linux or Windows (abbr.)

3. Integrated radio front-end for the 300 MHz to 3 GHz band (2 abbrs.)

4. *50% of Americans Listen to ______ _____ (2 wds.)

5. Network file transfer protocol (abbr.)

6. Applies a lubricant

7. Chemical symbol for erbium

8. Chemical symbol for radium

9. Ham's code for "Answer in prearranged order."

12. Chemical symbol for ytterbium

13. Ham's code for "The net has traffic for you. Stand by."

16. *_____ Helps Transistor Laser Switch Faster

17. Signal-to-noise ratio (abbr.)

19. Personal Handy Phone System (abbr.)

20. Read-only (abbr.)

21. Coordinated Universal Time (abbr.)

23. Electronics Industry Association (abbr.)

25. Input intercept point (abbr.)

26. Greek letter (micro)

27. Wire diameter unit (abbr.)

30. Design for Manufacturability (abbr.)

32. Short for potentiometer

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

34. BASIC looping keyword

36. Frequency Division Duplex

38. File name extension for an ASCII file

40. *'Bending Current' Opens Way for New Type of Magnetic ______

41. A disk operation

43. Base 16 number system (abbr.)

44. 300 Hz to 3 kHz in audio (abbr.)

46. ___ Friedrich Gauss, after whom the unit of magnetic field strength is named

47. Method for mechanically connecting component leads in preparation for soldering

49. Glue together

50. Test point (abbr.)

51. Amplifier linearity specification (abbr.)

55. Circuit element connecting PCB layers (pl.)

56. Tie a bundle of wires together

57. Attenuator

58. Consequence of under sampling

59. Filter type that blocks frequencies in a specified band (abbr.)

60. Unit of frequency (archaic, abbr.)

62. Opposite of O.D.

64. *_______ Eyes 1st Customer for In-Space Satellite Servicing

66. Multifunctional silicon devices (abbr., pl.)

68. International Microwave Symposium (abbr.)

70. Enhanced Datarates for Global Evolution

72. Network device that takes commands from another similar device

75. Creates an impenetrable physical barrier

77. Semiconductor lamp

79. Ham's code for "Take over as net control station."

80. Mr. de Forest's first name

81. Wireless application protocol (abbr.)

82. Wireless phone region

83. World's 1st fully electronic digital computer

84. A very good conductor of electricity

85. Government program to bring electricity to farms (abbr.)

86. Precision landing system (abbr.)

88. Hub of the solar system (pl.)

89. Positive emitter-coupled logic (abbr.)

90. The lowest region of the ionosphere found approximately 25 to 55 miles above Earth (hyph.)

93. *Wearable ___________ Bracelet Keeps You Energized All Day Long

94. BER, 8 bits at a time

96. Unit of frequency (archaic, abbr.)

97. Digital Enhanced Cordless Telephone

99. Unit of inductance (abbr.)

100. Aerodynamic opposition to thrust

101. Chemical symbol for antimony

104. The "B" in BER

106. Opening for airflow

107. Ultra High Voltage (abbr.)

109. Mate to a TX

113. Image file format name extension

115. A BPF specification (abbr.)

116. Official Space Shuttle designation (abbr.)

117. MS's server-side script engine for dynamically-generated web pages (abbr.)

118. Beat frequency oscillator (abbr.)

119. Lubricant

121. Method of self-detection and self-fixing transmission of digital data (abbr.)

123. *_____ Macs Hit by Ransomware 'For 1st Time'

124. *Quantum Computer Comes Closer to Cracking RSA Encryption

125. Ham's code for "Net is Free (not controlled)."

128. Mate to a bolt

130. Code for a type of electrical wire insulation (abbr.)

133. BlackBerry or Palm for example (abbr.)

134. Chemical symbol for lithium

136. Gallium nitride chemical symbol

138. Original Equipment Manufacturer (abbr.)

141. Carrier-to-noise ratio (abbr.)

142. Chemical symbol for gallium

145. Type of data conversion device (abbr., pl.)

146. Constellation : The lion

148. Electrical safety organization (abbr.)

150. Logical negation operator

154. Chemical symbol for argon

155. Chemical symbol for polonium

157. Chemical symbol for mercury

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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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.

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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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