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Kirt Blattenberger - RF Cafe Webmaster

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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Radio Theme Crossword Puzzle
July 25, 2021

This Radio Theme Crossword Puzzle for July 25th has many words and clues related to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other technical subjects. As always, this crossword contains no names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort unless it/he/she is related to this puzzle's technology theme (e.g., Reginald Denny or the Tunguska event in Siberia). The technically inclined cruciverbalists amongst us will appreciate the effort. Enjoy --- This one is going to take a while!

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

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

Radio Theme Crossword Puzzle for July 25th, 2021 - RF Cafe

1. _________ Listening was a popular sport in the early days of radio
8. Polynomial of second order
16. Sound frequency in the human hearing range (abbr.)
17. 10E1 numerical prefix
20. Communication type that method makes use of electromagnetic waves, and is this Crossword Puzzle's main theme
21. Chemical symbol for erbium
23. Maintains a voltage for sampling
24. Test point (abbr.)
25. Custom metal parts (shields, etc.) etching company located in Chicago, IL
28. Constellation : The lion
29. Front edge of a wing (abbr.)
31. Type of modulation (abbr.)
33. Common average used for sinewaves (abbr.)
34. Infrared (abbr.)
35. CB slang for police speed radar
37. Boob tube (abbr.)
38. An unlicensed radio band in the U.S. often used for walkie-talkies (abbr.)
39. Governmental agency that monitors pollution (abbr.)
41. Filter type that blocks lower frequencies (abbr.)
42. Finite Element Analysis (abbr.)
44. Stock symbol for Raytheon
46. Mathematical process that yields a quotient as its result
49. Amateur radio abbreviation for the Oceania region (abbr.)
50. Circuit or mechanical designer with a Bachelor's or higher degree
53. One component of a complex number (abbr.)
55. Maximum Usable Frequency
56. ___-AZIMUTH telescope mount
57. Chemical symbol for magnesium
59. Describes the action of cleaving a crystal plane
60. Release control over
61. Under sampled
62. Crystal filter type (abbr.)
65. Chart types
67. Miniature RF connector
69. Transformer interwinding connection
71. Decimeter (abbr.)
72. Adding of information to a CW signal
75. PC follower
76. Release volatile products from a liquid coating such as paint
77. Upper frequency (abbr.)
78. Institute of Electrical and Electronics Engineers
79. Filter type that blocks frequencies below and above a specified band (abbr.)
80. Substrate for mounting components (abbr.)
81. Chemical symbol for tantalum
83. Angular speed unit
85. Semiconductor lamp
86. Type of chart
87. Type of logic gate
88. Describes when a synchronous motor loses phase lock (pl.)
91. Amp/1000
94. Type of microwave diode
96. Silicon transistor type (abbr.)
99. Chemical symbol for radon
100. Common shorthand reference for a capacitor
101. Opposite of I.D.
102. Chemical symbol for scandium
103. Mathematics of angles
105. BER, 8 bits at a time
106. Local Oscillator (abbr.)
108. Ham's code for "Answer in prearranged order."
109. Unit of inductance (abbr.)
111. Reflected radar or sonar signal (pl.)
113. Service of the ARRL that helps hams solve technical problems (abbr.)
115. Home state of Los Alamos lab (abbr.)
116. Key feature in a high level overvoltage protection device
118. Chemical symbol for einsteinium
119. Chemical symbol for selenium
121. Test equipment (abbr.)
122. Add two or more inputs
123. 3-phase transformer configuration
125. A common IC bond wire metal
127. Large unit of apparent power (abbr.)
129. Multiplexer (abbr.)
131. Application Specific Integrated Circuit (abbr.)
133. Programmable Logic Device (abbr.)
134. Ham's code for "What is your location?"
136. Morse Code for "from"
137. Chemical symbol for palladium
138. Intel x86 command for " jump if above"
139. Electrical overstress (abbr.)
140. Chemical symbol for tin
141. Measure of source / load mismatch (abbr.)
142. Length times width (pl.)
147. Chemical symbol for antimony
149. BER, 8 bits at a time
150. Abbreviation for minimum voltage
152. "Texting" (abbr.)
153. Dilbert's dog
155. Unit of length (abbr.)
157. Army-Navy specification prefix
158. Peripheral Component Interface (abbr.)
161. Chemical symbol for strontium
163. Software drafting tool (abbr.)
165. 10E-12 numerical prefix
167. Wireless communications used by truckers (abbr. + word, pl.)
170. Strong, lightweight wood
174. Unit of length (abbr.)
175. Filter type that blocks upper frequencies (abbr.)
176. Circuit element connecting PCB layers
179. Resistive component of a capacitor's lumped element model (abbr.)
180. Unit of inductance (abbr.)
181. Miniature threaded RF connector
184. 10E1 numerical prefix
185. Automatic Testing, Evaluation & Reporting (abbr.)
186. Network department (abbr.)
187. One who glues together
188. Chemical symbol for terbium
189. Kept in working condition
193. A common battery cell size
195. Automatic Calibration System (abbr.)
196. World's first satellite navigation system (abbr.)
197. Antenna radiated power measurement (abbr.)
198. Voltage-controlled oscillator (abbr.)
199. Cabinet manufacturer in Cheektowaga, NY
202. Ultra Fine Pitch Technology (abbr.)
206. Optical cross-connect (abbr.)
207. Type of component package (abbr.)
209. Imaging device (abbr.)
211. Very large unit of apparent power (abbr.)
212. Chemical symbol for silicon
213. Battery manufacturer in Bethel, CT
215. Network department (abbr.)
216. Area outside the stopband
218. Anatech Electronics Inc., (abbr.)
219. Rate of a radar transmitter's output waveform (abbr.)
220. Return-to-Zero (abbr.)
221. Innovative Power Products, Holbrook, NY (abbr.)
222. Automatic Calibration System (abbr.)
224. U.S. radio band from 530 to 1,700 kHz (abbr.)
225. Created an impenetrable physical barrier
227. Chemical symbol for polonium
228. Voltage-current phase mnemonic
230. Chemical symbol for iron
231. Chemical symbol for ytterbium
232. Software engineering tool (abbr.)
234. Ham radio operator
236. 1e-6 mA
238. Connector vendor
240. Chemical symbol for mendelevium
241. Have a chemically induced effect
244. National Television System Committee (abbr.)
246. Unit of length (abbr.)
247. The "C" in CES, the world's largest yearly convention of gadget and device manufacturers
248. Voltage regulator type for stepping up or down (hyph.)
2. Time taken for half the atoms of a radioactive sample to decay (2 wds.)
3. Type of digital transmission and a method of encoding digital data on multiple carrier frequencies (abbr.)
4. Time delay (abbr.)
5. Term used in soldering to achieve the condition that occurs when the metals being soldered are hot enough to melt the solder so it flows over the surface
6. Adjacent Channel Power Ratio (abbr.)
7. Unit of apparent power (abbr.)
9. Infrared (abbr.)
10. Forerunner to NASA
11. Opposite of I.D.
12. Created an efficient microstrip corner shape
13. Satellite of Jupiter discovered by Galileo
14. Mr. de Forest's first name
15. Chemical symbol for rhodium
18. Read-only (abbr.)
19. State of matter, descriptive
22. Read-only (abbr.)
25. Filter start frequency (abbr.)
26. End of soldering iron
27. Type of logic gate
28. C++, Java, BASIC, or Fortran, for example
29. Chemical symbol for lawrencium
30. IC killer (abbr.)
32. Manned rocket series that went to the moon
36. Stock symbol for Raytheon
37. Quantity of heat equal to 100,000 BTU
38. Receiver type for commercial broadcasts (abbr. + word, pl.)
39. Electronics Industry Association (abbr.)
40. Antenna (abbr.)
41. Amateur radio enthusiast
43. Logic family
45. Quantity is measured in hertz
47. A false signal produced in a superheterodyne receiver’s circuitry (pl.)
48. Volume unit (abbr., pl.)
51. A measure of receiver quality (abbr.)
52. BS__ - the degree held by many RF Cafe visitors
54. Traditional term for a person who enjoys helping newcomers get started in ham radio - a mentor
58. Started as HPIB
59. 10E-2 numerical prefix
62. Force a signal to an insignificant level
63. Chemical symbol for aluminum
64. Wireless application protocol (abbr.)
66. Galilean moon
67. Remove insulation from a wire
68. Voltage present at both opamp input terminals (2 wds.)
69. Logic family (abbr.)
70. Attenuator
72. Lowest power level capable of being demodulated (abbr.)
73. Antenna gain unit (abbr.)
74. Coefficient of temperature (abbr.)
77. Heatsink feature (pl.)
82. Circuit for maintaining constant voltage (abbr.)
84. Last stage in a transmitter (abbr.)
86. Chemical symbol for plutonium
89. Filter type that blocks upper frequencies (abbr.)
90. Signal-to-noise ratio (abbr.)
91. 1/000 of an inch
92. Chemical symbol for lanthanum
93. BlackBerry or Palm for example (abbr.)
94. Global System for Mobile Communications (abbr.)
95. The fourth state of matter, which occurs in stars and fusion reactors (pl.)
96. On-the-air meeting of hams at a set time, day and radio frequency
97. Chemical symbol for lead
98. The design component of total product cost (abbr.)
104. Advanced Communication Technologies and Services (abbr.)
105. Write-Once (abbr.)
107. Exponent that returns the original number
108. Ham's code for "Take over as net control station."
110. First lines in software that call external libraries (pl.)
112. He gave his name to the uncertainty principle
113. Chemical symbol for thulium
114. Shortwave listener (abbr.)
116. Chemical symbol for gadolinium
117. Max or min voltage of a waveform (abbr.)
120. Chemical symbol for europium
124. 36 in. (abbr., pl.)
126. Have a positive phase wrt a reference
128. Abbreviation for peak voltage
130. Chemical symbol for xenon
131. Chemical symbol for arsenic
132. Carrier-to-noise ratio (abbr.)
133. Peak Inverse Voltage
134. Type of matrix barcode used with laser scanning(abbr.)
135. Name for amateur wireless communications (2 wds.)
143. Type of flip-flop
144. System On Chip
145. Decibels above or below a dipole antenna (abbr.)
146. Quantity of voltage, and the "A" in AM
148. Beat frequency oscillator (abbr.)
149. Ham abbreviation indicating contacts with all major land masses
151. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
152. Half of DSB
154. Chemical symbol for gallium
156. Unit of processor calculation speed, abbr.
158. Components
159. Chemical symbol for cadmium
160. Input intercept point (abbr.)
162. Unit of time (abbr.)
164. Receiver type for commercial broadcasts (abbr. + word, pl.)
166. Chemical symbol for californium
168. Type of flip-flop
169. Describes a region on a semiconductor that has a linear and symmetric I-V curve
171. Computer communication scheme (abbr.)
172. Stock symbol for Advanced Micro Devices
173. Filter type commonly used in phase-locked-loops
174. A type of average (pl.)
176. Voice of America
177. Grow in amplitude
178. Agilent's EE design software (abbr.)
181. Halves of DIP's
182. Chemical symbol for manganese
183. Amateur radio operating mode for sharing real-time video (abbr.)
190. Chemical symbol for argon
191. Type of current flow (abbr.)
192. ______ velocity - speed necessary to become free of the Earth's gravitational force
194. Type of reconfigurable memory (abbr.)
197. The "E" in ELF
200. Surrounding environmental conditions
201. Very large unit of apparent power (abbr.)
203. Upper frequency (abbr.)
204. Chemical symbol for tantalum
205. Under samples
206. Output intercept point (abbr.)
208. 1E6 cycle per second
209. Printer output resolution unit (abbr.)
210. Digital Signal Processor (abbr.)
214. Mr. de Forest's first name
217. 24 hours
220. Term indicating profitability of a company (abbr.)
223. Unlicensed radio type used by truckers (abbr.)
226. ECM response
227. Chemical symbol for platinum
228. Chemical symbol for erbium
229. Stock symbol for Intel
230. First-in, first-out, abbr.
232. Centimeter (abbr.)
233. Type of data conversion device (abbr.)
235. One type of electron spin
237. A type of digital modulation (abbr.)
239. 3 MHz to 30 MHz
241. Chemical symbol for radon
242. Chemical symbol for gold
243. Test equipment (abbr.)
244. Greek letter used for frequency
245. Unlicensed FCC Part 95 realm for personal and business radio use (abbr.)

See solution below


2021 Crosswords 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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Radio Theme Crossword Solution for July 25th, 2021 - RF Cafe

RF Superstore (RF Components) - RF Cafe
Windfreak Technologies Frequency Synthesizers - RF Cafe

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