Engineering & Science Crossword Puzzle
July 10, 2011

Note: A standard for crossword puzzles is when all words in a clue are capitalized, the solution is the abbreviation or acronym for that clue; e.g., Alternating Current = AC.

2011 Engineering & Science Crossword Puzzles

Visit the Crossword Express website - RF CafeTake a break from the drudgery by trying 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.

12/25/2011
12/18/2011
12/11/2011
12/4/2011
11/27/2011
11/20/2011
11/13/2011
11/6/2011
10/30/2011
10/23/2011
10/16/2011
10/9/2011
10/2/2011
9/25/2011
9/18/2011
9/11/2011
9/4/2011
8/28/2011
8/21/2011
8/14/2011
8/7/2011
7/31/2011
7/24/2011
7/17/2011
7/10/2011
7/3/2011
6/26/2011
6/19/2011
6/12/2011
6/5/2011
5/29/2011
5/22/2011
5/15/2011
5/8/2011
5/1/2011
4/24/2011
4/17/2011
4/10/2011
4/3/2011
3/27/2011
3/20/2011
3/13/2011
3/6/2011
2/27/2011
2/20/2011
2/13/2011
2/6/2011
1/30/2011
1/23/2011
1/16/2011
1/9/2011
1/2/2011

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

Engineering Crossword Puzzle, 7/10/2011 - RF Cafe
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ACROSS DOWN
1. Complex resistance
8. He invented the triode vacuum tube
16. Chemical symbol for aluminum
17. BSEE + 2 years
20. A circuit that takes two or more input signals, and produces an output that includes the sum and difference of those signal frequencies
21. Opposite of a LO
23. It has units of degrees or radians
24. Centimeter (abbr.)
25. Unit of temperature
28. High Data Rate
29. Small unit of capacitance (abbr.)
31. Chemical symbol for arsenic
33. Online service
34. Modulation type (abbr.)
35. Unit of current
37. Chemical symbol for krypton
38. U.S. Spectrum allocation agency
39. Programmable Logic Device (abbr.)
41. Word used in describing 2-D and 3-D object dimensions
42. Type of memory
44. Type of data storage IC
46. Voids
49. Upper frequency (abbr.)
50. Constellation : The scorpion
53. PC follower
55. Unit of weight
56. Variable crystal oscillator (abbr.)
57. Test equipment (abbr.)
59. Switch position
60. Ultra Fine Pitch Technology (abbr.)
61. A statement that has been proven on the basis of previously established statements
62. Digital encoding of the transmission mode in the vertical sync portion of an SSTV image (abbr.)
65. Volt-ohmmeter (abbr., pl.)
67. Specialized mobile radio (abbr.)
69. Unit of heat
71. Chemical symbol for helium
72. German astronomer who developed a mathematical relationship between planetes and distance from sun
75. Chemical symbol for rhodium
76. Totals
77. Chemical symbol for praseodymium
78. European Telecommunications Standards Institute (abbr.)
79. Chemical symbol for argon
80. Government program to bring electricity to farms (abbr.)
81. Chemical symbol for gadolinium
83. Type of data conversion device (abbr.)
85. Official Space Shuttle designation (abbr.)
86. Constellation : The lion
87. A common battery cell size
88. Moon of Saturn discovered in 1789
91. High frequency semiconductors
94. First man to orbit the earth - ____ Gagarin
96. Logic gate output configuration (abbr.)
99. Chemical symbol for cadmium
100. Type of computer display (abbr.)
101. Type of current flow (abbr.)
102. Time delay (abbr.)
103. Lamp cord
105. Ham's code for "What is your location?"
106. Type of modulation (abbr.)
108. Carrier-to-noise ratio (abbr.)
109. Electronics manufacturer with "meatball" logo
111. Brand of hobby knife
113. BER, 8 bits at a time
115. Chemical symbol for silver
116. Discipline for aircraft navigation in low visibility environments (abbr.)
118. Chemical symbol for xenon
119. Unit of length (abbr.)
121. Part of a FOR loop
122. Readability, Signal, and Tone (QoS report type)
123. Programmable logic device (abbr.)
125. Type of programmable device (abbr.)
127. Hit a component with an electrostatic discharge
129. A keyboard key
131. 36 inches
133. Direct Memory Access (abbr.)
134. Method of self-detection and self-fixing transmission of digital data (abbr.)
136. Chemical symbol for erbium
137. Chemical symbol for nobelium
138. Chemical symbol for platinum
139. Ham's code for "Are my signals fading?"
140. Chemical symbol for radon
141. Automated Test Equipment (abbr.)
142. Radio Amateur Satellite Corporation (abbr.)
147. Chemical symbol for tin
149. Master Earth Station (abbr.)
150. Chemical symbol for mendelevium
152. Ham's code for "Is my transmission being interferred with?"
153. One sixtieth of a degree of angular measurement (pl.)
155. Unit of inductance (abbr.)
157. Electrical safety organization (abbr.)
158. Scheme to maintain proper frequency (abbr.)
161. Chemical symbol for strontium
163. Mate to a bolt
165. Inventor of the pre-quantum atomic model
167. Switch type with gauranteed default position
170. Constellation : The scales
174. Chemical symbol for lanthanum
175. Below ELF
176. Scheme to maintain proper frequency (abbr.)
179. Logic family (abbr.)
180. BS__ - the degree held by many RF Cafe visitors
181. Type of digital filter (abbr.)
184. BS__ - the degree held by many RF Cafe visitors
185. Apollo 11 astronaut ____ Armstrong
186. Test equipment (abbr.)
187. Geometrical figure defined as a curve in which every point is equidistant from a fixed point
188. Method of connecting redundant power supplies
189. High power microwave amplifiers
193. Chemical symbol for nobelium
195. Positive voltage lead color
196. 24 hours
197. Transportation accident investigation agency (abbr.)
198. 10^1 numerical prefix (pl.)
199. Speaker for generating high frequencies
202. Asynchronous Communication Interface Adapter (abbr.)
206. Constellation : The lion
207. Boob tube (abbr.)
209. Relative power level unit (abbr.)
211. Type of digital filter (abbr.)
212. Chemical symbol for silicon
213. ________ function, mathematically relates output to input
215. Chemical symbol for neptunium
216. Hot fuel-proof dope type
218. Feedback system used to maintain constant level (abbr.)
219. System for guiding aircraft (abbr.)
220. Chemical symbol for californium
221. Precision landing system (abbr.)
222. A common RS-232 serial bus command (abbr.)
224. Type of flip-flop
225. A coherent monochrome light source (pl.)
227. Chemical symbol for lutetium
228. Electrical overstress (abbr.)
230. Chemical symbol for niobium
231. Ratio of circumference to diameter
232. Internet address (abbr.)
234. Test equipment vendor
236. Equalizer (abbr.)
238. Mr. Ohm's first name
240. Chemical symbol for tin
241. Adjustment dial (pl.)
244. Joint Tactical Radio Service
246. Switch position
247. Reads from disk
248. Area outside the stopband, pl.
2. RF & Microwaves, RF Design, Microwave Journal, etc.
3. Oscillator type that is referenced to an external source (abbr., pl.)
4. Decimeter (abbr.)
5. File name extension for an ASCII file
6. Electric enclosure standard organization (abbr.)
7. European equivalent to the U.L.
9. Electromagnetic (abbr.)
10. Thin layer of material deposited a surface
11. Shorthand for oxygen
12. The "R" in RPN
13. Chemical symbol for erbium
14. Amplifier linearity specification (abbr.)
15. 1e-6 mA
18. Front edge of a wing (abbr.)
19. Lowest operational frequency of a waveguide (pl.)
22. Infrared (abbr.)
25. Chemical symbol for chlorine
26. Direction of carbon fiber strands
27. Type of component package (abbr.)
28. Pliers-like surgical tool used in the electronics lab
29. A BPF specification (abbr.)
30. U.S. Spectrum allocation agency
32. Coaxial cable company in Port Murray, NJ
36. Radio Amateurs of Canada (abbr.)
37. Cutting instrument
38. Type of screw (2 wds.)
39. Peak Inverse Voltage
40. Digital storage oscilloscope (abbr.)
41. Semiconductor device type (abbr.)
43. Maximum Usable Frequency
45. Chunks of space rocks
47. Referring to atoms
48. Aircraft navigation system (abbr.)
51. Chemical symbol for plutonium
52. One type of electron spin
54. Greek symbol commonly used to represent angles
58. Electronic Variable Optical Attenuator (abbr.)
59. Greek letter used for resistance
62. Diode type whose capacitance is controlled by a reverse bias
63. One port of an amplifier
64. Signal-to-noise ratio (abbr.)
66. Opposite of I.D.
67. Metal or plastic rod that connects a potentiometer wiper to a knob
68. Plane figure that has four straight sides, and four right angles (pl.)
69. Data transmission pathway
70. FCC's Universal Licensing System (abbr.)
72. Intentionally block communications signals
73. Amateur radio enthusiast
74. Chemical symbol for beryllium
77. Scheduling graph type
82. Type of data conversion device (abbr.)
84. Morse Code for "from"
86. Chemical symbol for lutetium
89. Band between RF and BB
90. Synchronous Digital Hierarchy
91. Image file format name extension
92. Chemical symbol for strontium
93. Special diode type that can be switched (abbr.)
94. Yttrium Aluminum Garnet
95. Slang for an Amateur License, pl.
96. Imaging device (abbr.)
97. Part of a FOR loop
98. Ham abbreviation for transceiver
104. Digital intelligence
105. Unit of liquid measure (abbr.)
107. 1/000 of an inch
108. Common shorthand reference for a capacitor
110. Lays bare, such as a wire
112. Determined the similarity of two waveforms as a function of a time
113. Weight (abbr.)
114. Angular speed unit
116. Multifunctional silicon devices (abbr.)
117. Return-to-Zero (abbr.)
120. 1E6 nanoseconds
124. A common battery cell size
126. Study for a test just before taking it
128. Army-Navy specification prefix
130. "Calling any amateur radio station"
131. Chemical symbol for ytterbium
132. The system than converts common website names to IP addresses (abbr.)
133. Logarithmic unit of power
134. Chemical symbol for iron
135. CW signals onto which information is modulated
143. Unit of length (abbr.)
144. Chemical element abbreviated Sn
145. One port of an amplifier
146. PCB material
148. Type of logic gate
149. Maximum Usable Frequency
151. Singulated piece of IC wafer
152. Ham's code for "Can you acknowledge receipt?"
154. Greek letter used for frequency
156. Majority carrier in p-type material
158. Metal mixture
159. Start frequency (abbr.)
160. Software engineering tool (abbr.)
162. Chemical symbol for francium
164. Units of heat
166. 3 MHz to 30 MHz
168. Network department (abbr.)
169. 10^-15 numerical prefix
171. Chemical symbol for beryllium oxide
172. Automatic Calibration System (abbr.)
173. Mate a plug to a jack
174. Geometric entity with only length, pl.
176. Powers pneumatic devices
177. Describes the movement of a spacecraft in space when there is no thrust from the engines
178. Imaging device (abbr.)
181. A three-terminal power semiconductor device noted for high efficiency and fast switching (abbr.)
182. One port of an amplifier
183. Positive voltage lead color
190. Chemical symbol for arsenic
191. Chemical symbol for tantalum
192. Irratiated cosmic gas
194. Trigger diode that conducts current only after its breakdown voltage has been exceeded momentarily (pl.)
197. After Uranus
200. Gold connection to a die
201. Electronics Industry Association (abbr.)
203. Chemical symbol for chromium
204. Army-Navy specification prefix
205. AnAngle described by hypotenuse/opposite sides of a right triangle
206. Low Noise Amplifier (abbr.)
208. 3 kHz to 30 kHz
209. Antenna gain unit (abbr.)
210. A common RS-232 serial bus command (abbr.)
214. Enhanced Graphics Adapter
217. Effective Radiated Power (abbr.)
220. Describes the action of cleaving a crystal plane
223. Semiconductor and calculator company (abbr.)
226. Airfoil shapers
227. Chemical symbol for lithium
228. Chemical symbol for europium
229. Adjusts a pot
230. A common lamp tube gas
232. Unit of time (abbr.)
233. RĂ¡dio Nacional de Angola (abbr.)
235. Chemical symbol for scandium
237. Ham's code for "Shall I send more slowly?"
239. Chemical symbol for gallium
241. Unit of frequency (archaic, abbr.)
242. Unix, Linux or Windows (abbr.)
243. Chemical symbol for selenium
244. Intel x86 command for " jump if above"
245. Chemical symbol for antimony



See solution below








Engineering Crossword Puzzle Solution, 7/10/2011 - RF Cafe