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Copyright: 1996 - 2024
    Kirt Blattenberger,


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...

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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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