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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

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...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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RF Cafe Engineering & Science Crossword Puzzle
May 19, 2019

Since 2000, I have been creating custom engineering- and science-themed crossword puzzles for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs or works crosswords.


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

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

Engineering & Science Crossword Puzzle May 19, 2019 - RF Cafe

<click for full size to print>

ACROSS DOWN
1. Digital circuit type for making counters (1 ltr., 2 wds.)

8. Type of current flow in semiconductor when breakdown voltage is exceeded

16. Chemical symbol for lanthanum

17. Chart types

20. Cambridge University _____, technical book publisher

21. Unit of length (abbr.)

23. Part of CRC

24. Read-only (abbr.)

25. Regarding light transmission

28. Semiconductor lamp

29. Chemical symbol for praseodymium

31. Chemical symbol for xenon

33. "Texting" (abbr.)

34. Cyanide (abbr.)

35. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)

37. Chemical symbol for selenium

38. CDMA Development Group (abbr.)

39. Below ELF

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

42. Mathematical basis for calculating noise power for a given bandwidth and temperature (abbr.)

44. Chemical symbol for beryllium oxide

46. Television (2 wds.)

49. Chemical symbol for erbium

50. Multi-layered PCB

53. Chemical symbol for lawrencium

55. 1/000 of an inch

56. On-the-air meeting of hams at a set time, day and radio frequency

57. Bandwidth (abbr.)

59. Rate of a radar transmitter's output waveform (abbr.)

60. Target indication on a radar display

61. Named a software object

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

65. CB slang for CB radio or antenna

67. ELI the ICE ___

69. Automatic network analyzer (abbr.)

71. Multifunctional silicon devices (abbr.)

72. Evangelista __________, inventor of the mercury barometer

75. Chemical symbol for nobelium

76. Reserves for

77. Galilean moon

78. 10E1 numerical prefix

79. Electromagnetic (abbr.)

80. Manufacturer of project boxes

81. Chemical symbol for antimony

83. Computer communication scheme (abbr.)

85. Total radiated power (abbr.)

86. Type of data conversion device (abbr.)

87. Chemical symbol for einsteinium

88. First name of a British scientist of falling apple fame

91. Connector vendor in Danbury, CT

94. No insulation

96. Low Noise Amplifier (abbr.)

99. Chemical symbol for terbium

100. Shorthand for liquid oxygen

101. Chemical symbol for scandium

102. Unit of time (abbr.)

103. Configuring a switch to break electrical contact

105. Data transmission pathway

106. European equivalent to the U.L.

108. Positive voltage lead color

109. Chemical symbol for radium

111. Pertaining to the moon

113. Units of 1000 CPS

115. Type of current

116. Peripheral Component Interface (abbr.)

118. Decimeter (abbr.)

119. Local Oscillator (abbr.)

121. Chemical symbol for nobelium

122. A keyboard key

123. Colorado Springs military school (abbr.)

125. An ellipse has two of them

127. Rádio Nacional de Angola (abbr.)

129. Indium phosphide (abbr.)

131. Early operating system (still popular)

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

134. Push to Talk (abbr.)

136. Chemical symbol for neon

137. Filter type that blocks lower frequencies (abbr.)

138. Amateur radio operator who is qualified to administer Amateur Radio licensing examinations (abbr.)

139. 3 GHz to 30 GHz

140. Chemical symbol for silicon

141. Greek letter

142. Wideband CDMA

147. Chemical symbol for tin

149. On-the-air meeting of hams at a set time, day and radio frequency

150. Opposite of O.D.

152. 10 decibels

153. Like a crystal

155. Band between RF and BB

157. Part of this website's title

158. Once around a circuit

161. Akin to an EE, CE, AE, etc.

163. Stock symbol for Advanced Micro Devices

165. RF computer network

167. Reserve memory for

170. Positively doped silicon

174. Chemical symbol for tantalum

175. End of transmission (abbr.)

176. Type of computer display (abbr.)

179. One port of an amplifier

180. Morse Code for "from"

181. Telex-Over-Radio (abbr.)

184. Radio signals from the cosmos (abbr.)

185. Circuit path with very high or infinite impedance

186. Pure carrier (abbr.)

187. Prefix meaning temperature-related

188. Unit of inductance (abbr.)

189. Vacuum tube type for a high power, high frequency transmitter (pl.)

193. Chemical symbol for lanthanum

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

196. Common average used for sinewaves (abbr.)

197. Cause a circuit breaker to open

198. World's largest yearly convention of gadget and device manufacturers (abbr.)

199. Type of ground strap wire

202. Straight line emanating from a point source (pl.)

206. Amateur Radio Association (abbr.)

207. Equalizer (abbr.)

209. Digital encoding of the transmission mode in the vertical sync portion of an SSTV image (abbr.)

211. Engineering Change Notice (abbr.)

212. Greek letter

213. Grow in amplitude

215. Chemical symbol for lithium

216. Prevented the direct physical transfer of signals from one point to another

218. End of soldering iron

219. Printer output resolution unit (abbr.)

220. Chemical symbol for calcium

221. Anatech Electronics Inc., (abbr.)

222. Original Equipment Manufacturer (abbr.)

224. Type of flip-flop

225. Type of reconfigurable memory (abbr., pl.)

227. Last stage in a transmitter (abbr.)

228. Unit of energy

230. Network department (abbr.)

231. Morse Code for "from"

232. Measure of source / load mismatch (abbr.)

234. Device for interpreting encoded data

236. Switch position

238. Mr. Bohr's first name

240. Word used in describing 2-D and 3-D object dimensions; i.e., 10 mm __ 25 mm

241. The "S" in SOIC

244. Its unit is the erg or joule

246. 1.602E-19 Joules

247. E=CM 2 guy

248. The dit-dah-dit sent at the end of a transmission (2 wds.)

2. A type of coax cable (semi-rigid, e.g.)

3. Tie a bundle of wires together

4. Min-to-max voltage of a waveform (abbr.)

5. Type of digital filter (abbr.)

6. Low altitude earth orbit

7. Unix, Linux or Windows (abbr.)

9. Abbreviation for peak voltage

10. Amateur Radio Direction Finding (abbr.)

11. Front edge of a wing (abbr.)

12. Multivibrator type

13. Unit of time (abbr.)

14. Gary Breed's fine magazine on RF & microwaves topics (abbr.)

15. Unit of frequency (archaic, abbr.)

18. One type of electron spin

19. CRT electron beam scan type (pl.)

22. Time delay (abbr.)

25. Unix, Linux or Windows (abbr.)

26. ___/IP scheme for networked connectivity

27. One port of an amplifier

28. Constellation : The lesser lion (3,5)

29. Chemical symbol for palladium

30. Computer monitor cable type (abbr.)

32. Fraction of incident light or radiation reflected by a surface or body

36. Finite Element Analysis (abbr.)

37. Ratio of a mechanical drawing

38. What atoms did in a particle accelerator

39. Hub of the solar system

40. Semiconductor device type (abbr.)

41. Opposite of USB

43. Notch type filter (abbr.)

45. Reverse-engineer an IC

47. Greek letter used for resistance (pl.)

48. Lubricant

51. Chemical symbol for niobium

52. Semiconductor and calculator company (abbr.)

54. Radio Amateur Civil Emergency Service (abbr.)

58. Fuse metals together using heat

59. Geometric solid having two ends which are similar, equal, and parallel rectilinear figures, and sides which are parallelograms

62. The rotating part of a motor

63. Chemical symbol for silicon

64. Substrate for mounting components (abbr.)

66. Chemical symbol for aluminum

67. Connector vendor

68. Small unit of time

69. ___-AZIMUTH telescope mount

70. Test document for verifying proper function (abbr.)

72. Television Interference (abbr.)

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

74. Chemical symbol for europium

77. International Amateur Radio Union (abbr.)

82. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (abbr.)

84. Army-Navy specification prefix

86. 10E1 numerical prefix

89. Type of component package (abbr.)

90. Unlicensed radio type for personal and business use (abbr., pl.)

91. Scheme to maintain proper frequency (abbr.)

92. Chemical symbol for holmium

93. Display type

94. Digital transmission figure of merit (abbr.)

95. Administers

96. Low Noise Amplifier (abbr.)

97. Chemical symbol for nickel

98. Circuit that reduces interference (abbr.)

104. Type of microwave diode

105. Stock symbol for Boeing

107. Enhanced Graphics Adapter

108. Radio Direction Finding (abbr.)

110. Between-series connector

112. Minimum noise power level (2 wds.)

113. Unit of frequency (archaic, abbr.)

114. Hit a component with an electrostatic discharge

116. Ratio of circumference to diameter

117. Infrared (abbr.)

120. Switch position

124. Fast Fourier transform (abbr.)

126. Counter ElectroMotive Force (abbr.)

128. Unit of inductance (abbr.)

130. Unit of time (abbr.)

131. Unit of capacitance (abbr.)

132. Transmit Incremental Tuning (abbr.)

133. Family of ICs with a certain component density level (abbr.)

134. Chemical symbol for plutonium

135. Speaker for generating high frequencies (pl.)

143. Chemical symbol for chlorine

144. A common battery cell size

145. One system's phonetic letter "z"

146. In Geometry, what is a fixed line used in formulating the definition of a curve or surface

148. Negation prefix

149. Gun safety and education organization (abbr.)

151. Singulated piece of IC wafer

152. Graphics file extension

154. Centimeter (abbr.)

156. What current is said to do

158. One of the first commercial software spreadsheets, (w/123)

159. Type of current flow (abbr.)

160. Attenuator

162. Internet protocol (abbr.)

164. Its chemical symbol is V

166. PC follower

168. Chemical symbol for lutetium

169. Trans European Trunked RAdio

171. Elemental compound used for microwave frequency reference oscillators (abbr.)

172. Electrical overstress (abbr.)

173. Its chemical symbol is I

174. Teletypewriter exchange service

176. Type of distribution, squared

177. Receiver/transmitter that listens for a transmission and re-transmits it

178. Total radiated power (abbr.)

181. Enter data using the keyboard

182. Type of logic gate

183. Radio Amateurs of Canada (abbr.)

190. Opposite of a LO

191. Test equipment (abbr.)

192. The "N" in SNR (pl.)

194. Search engine

197. Caused a circuit breaker to open

200. The imaginary part of a complex quantity

201. Logic family

203. Army-Navy specification prefix

204. Chemical symbol for strontium

205. Type of reconfigurable memory (abbr., pl.)

206. Circuit for maintaining constant voltage (abbr.)

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

209. Circuit element connecting PCB layers

210. Semiconductor On Insulator (abbr.)

214. Half of a DIP

217. U.S. military organization (abbr.)

220. Software drafting tool (abbr.)

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

226. 6.02x10E23 of anything

227. Chemical symbol for polonium

228. Chemical symbol for erbium

229. Stock symbol for Google

230. Institute of Electrical and Electronics Engineers

232. Chemical symbol for antimony

233. 3-phase transformer configuration

235. Modern battlefield technique (abbr.)

237. The design component of total product cost (abbr.)

239. Type of component package (abbr.)

241. Chemical symbol for tin

242. PC follower

243. Chemical symbol for lithium

244. Write-Once (abbr.)

245. Chemical symbol for krypton


See solution below

 

2019 Crossword Puzzle Archive

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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Engineering & Science Crossword Solution May 19, 2019 - RF Cafe

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