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RF Cafe Engineering & Science Crossword Puzzle
March 17, 2019

This very large crossword puzzle will keep you busy for a while. Since 2000, I have been creating custom technology-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

RF Cafe Engineering & Science Crossword Puzzle March 17, 2019

1. Curve traced out by a point which moves around another point with an ever increasing radius
5. Structures of columns and rows
10. Advanced Communication Technologies and Services (abbr.)
11. Wire diameter unit (abbr.)
13. Error checking scheme (abbr.)
14. Part of this website's title
15. Parts _____
18. PCB mask exposing ray (abbr.)
20. Total radiated power (abbr.)
22. Commercial Off-the-Shelf
24. Small unit of capacitance (abbr.)
26. Short for potentiometer
27. RF ____, the world's best engineering website
28. Stock symbol for National Semiconductor
29. Stock symbol for Linear Technologies
31. Akin to WAC, only just in America
33. Filter type that blocks frequencies in a specified band (abbr.)
34. Transformer interwinding connection
35. Early computer display screen resolution (abbr.)
36. Chemical symbol for silicon
37. 3 GHz to 30 GHz
39. Transmit Incremental Tuning (abbr.)
40. Chemical symbol for copper
41. Type of chart
42. Radio signals from the cosmos (abbr.)
43. Multichannel multipoint distribution service
45. Newest buzz phrase for ubiquitous remote control and monitoring of everything (abbr.)
48. Unit of time (abbr.)
49. ELI the ICE ___
51. One axis of an ellipse
52. 1.602E-19 Joules
53. Government program to bring electricity to farms (abbr.)
54. Akin to an EE, CE, AE, etc.
55. Anatech Electronics Inc., (abbr.)
56. Chemical symbol for platinum
57. Digital storage oscilloscope (abbr.)
61. Enrico _____, nuclear physicist
63. Ratio of output to input power, voltage, current, light, etc. (pl.)
65. Service of the ARRL that helps hams solve technical problems (abbr.)
67. Adding two or more inputs
69. Fairchild Advanced Schottky TTL (abbr.)
71. Logic family
73. Below ELF
74. Peripheral Component Interface (abbr.)
76. Modem encoding method (abbr.)
78. Unit of resistance
80. Instrument used to observe the corona of the sun
83. _______ Voltage - Lowest input level for which a voltage regulator will produce a predetermined output
84. What is the measure of heat intensity called
87. Deutsche Industrie Normenausschuss
89. Form of digital phase modulation in which the phase of the RF signal depends on the modulating code (abbr.)
91. Amateur Radio Association (abbr.)
92. Finite-Element Model
95. World's largest yearly convention of gadget and device manufacturers (abbr.)
97. Software function selection mechanism
98. Sampling rate pioneer
102. Display type
103. Troubleshooting software
105. International phonetic alphabet letter "I"
108. ELI the ICE ___
109. Electrical safety organization (abbr.)
110. Abbreviation for acknowledge (also a common word used by Bill the Cat)
111. Read-only (abbr.)
112. Test document for verifying proper function (abbr.)
114. One port of an amplifier
116. Retain a charge
117. Miniature threaded RF connector
118. Chemical symbol for gadolinium
120. Agilent's EE design software (abbr.)
122. Software function selection mechanism
124. BS__ - the degree held by many RF Cafe visitors
125. Wireless application protocol (abbr.)
126. Last stage in a transmitter (abbr.)
127. Voice of America
129. Unit of current
131. Chemical symbol for chromium
132. Add two or more inputs
133. Rotate about the vertical axis
134. Chemical symbol for cesium
135. Half of DSB
137. Steady-state voltage reference
139. Push to Talk (abbr.)
140. Integrated Services Digital Network (abbr.)
141. The "L" in VLF
143. Unit of time (abbr.)
144. Transportation accident investigation agency (abbr.)
146. Positive voltage lead color
147. Opposite of O.D.
149. Online auction site
151. Chemical symbol for terbium
152. IC killer (abbr.)
153. Circuit that reduces interference (abbr.)
156. Type of high frequency circuit substrate (abbr.)
158. Manned rocket series that went to the moon
159. Mr. Fermi's first name
2. Chemical symbol for polonium
3. Refuse to absorb energy
4. Layers of a multi-layered PCB
5. Logic family (abbr.)
6. Application Specific Integrated Circuit (abbr.)
7. Electromagnetic (abbr.)
8. Chemical symbol for scandium
9. Effective Radiated Power (abbr.)
12. Greek letter (micro)
13. Type of computer display (abbr.)
16. One state of matter
17. Logic family (abbr.)
19. Organization for former military members
20. Part of a FOR loop
21. Hit a component with an electrostatic discharge
23. Official Space Shuttle designation (abbr.)
25. Facsimile
26. Chemical symbol for praseodymium
27. Software engineering tool (abbr.)
30. Type of distribution, squared
32. Half of a DIP
33. Data transmission pathway
34. Chemical element abbreviated Sn
36. Specialized mobile radio (abbr.)
38. BASIC looping keyword
40. Lowest operational frequency of a waveguide
41. Set of poles
43. Minutes of Use (abbr.)
44. Chemical symbol for selenium
46. Short for terminal
47. One component of volume
49. Swap ____, a Ham's flea market
50. Unit of length (abbr.)
51. Degree of IC sophistication (abbr.)
55. Audio Frequency Shift Keying (abbr.)
56. 10E-12 numerical prefix
57. Type of data conversion device (abbr.)
58. Common test for verifying high voltage tolerance w/o breakdown
59. Unix, Linux or Windows (abbr.)
60. Ratio of circumference to diameter
62. 1/000 of an amp (abbr.)
64. Describes when a synchronous motor lost "lock"
66. Special diode type that can be switched (abbr.)
68. Country of RF Cafe's residency
70. Mechanical engineering organization (abbr.)
72. Greek symbol commonly used to represent angles
75. Having to do with charged particles
77. Exponent that returns the original number
79. The design component of total product cost (abbr.)
80. Describes the action of cleaving a crystal plane
81. Ground fault interrupter (abbr.)
82. Common solder composition (pre-lead-free, abbr.)
83. Constellation : The dragon
84. Device for matching antenna impedance to transmitter impedance (pl.)
85. Effective frontal area presented to a microwave interrogation system (abbr.)
86. Internet address (abbr.)
88. Apollo 11 astronaut ____ Armstrong
89. Maximum voltage in a waveform
90. Transform type for changing series shorted transmission line stub into a parallel open line stub
93. A property of memristors
94. Hub of the solar system
96. Chemical symbol for tin
97. Type of capacitor dielectric
99. Type of matrix barcode used with laser scanning(abbr.)
100. Greek letter
101. Boob tube (abbr.)
104. The UK's largest defense electronics contractor (abbr.)
106. Cause a voltage or current waveform to gradually die out
107. Unit of heat
109. One type of electron spin
113. BlackBerry or Palm for example (abbr.)
115. Home state of Los Alamos lab (abbr.)
116. Signal-to-noise ratio (abbr.)
117. Crystal filter type (abbr.)
118. World's first satellite navigation system (abbr.)
119. Line of Sight (abbr.)
121. Miniature RF connector
123. Exalted-Carrier Single Sideband (abbr.)
124. One port on a BJT
125. Computer interconnection scheme (abbr.)
128. MS's server-side script engine for dynamically-generated web pages (abbr.)
130. Part of a male connector
133. 36 in. (abbr., pl.)
134. Pure carrier (abbr.)
136. Broadband Signal Intrusion (abbr.)
138. Automated Test Equipment (abbr.)
141. Semiconductor lamp
142. Opposite of I.D.
145. The "B" in BGA
146. Readability, Signal, and Tone (QoS report type)
148. 10E1 numerical prefix
150. Elemental compound used for microwave frequency reference oscillators (abbr.)
154. 1e-6 mA
155. Filter type that blocks upper frequencies (abbr.)
157. A BPF specification (abbr.) 

See solution below


2019 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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RF Cafe Engineering & Science Crossword Solution March 17, 2019 

ERZIA (RF amplifiers, wireless, communications) - RF Cafe PK1 (Rohde & Schwarz) - RF Cafe
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