While all RF Cafe crosswords do in fact use only my hand-entered dictionary of terms and clues (literally
thousands accumulated over the years) that pertain exclusively to science, engineering, chemistry, physics,
mathematics, astronomy, etc., the choice for a particular title is to help attract search engines to
the page. There is nothing deceptive going on, just an attempt to exploit the nature of search engine
algorithms that rank pages based on meta tags coinciding with relevant keywords and phrases occurring
on the page. Enjoy.
Reproduction of this puzzle without the express permission
of RF Cafe is prohibited. acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

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1. Go beyond the steady-state voltage output 6. He developed a law stating the sum of all currents
into and out of a node is zero 11. Opposite of O.D. 12. Chemical symbol for iron 13. Type of
distribution, squared 14. Read-only (abbr.) 15. Chemical symbol for rubidium 17. Chemical symbol
for nickel 18. Radio signal route 21. Chemical symbol for neptunium 23. Centimeter (abbr.)
24. Greek letter (micro) 25. Determine cause and effect 29. Logarithmic unit of voltage (abbr.)
31. Unit of length (abbr.) 32. Colorado Springs military school (abbr.) 33. Chemical symbol for
chlorine 35. A type of digital modulation (acr.) 37. Chemical symbol for aluminum 39. Unintended
frequency product from a mixer 41. Chemical symbol for calcium 42. Transportation accident investigation
agency (abbr.) 44. Chemical symbol for niobium 45. Chemical symbol for lawrencium 46. Stock
symbol for Harris Communications 47. Airport Surveillance Radar (abbr.) 49. Unit of frequency
(archaic, abbr.) 50. Unit of length (abbr.) 52. Chemical symbol for tantalum 54. Coefficient
of temperature (abbr.) 55. Akin to an EE, CE, AE, etc. 56. Type of current 57. BS__ - the degree
held by many RF Cafe visitors 58. Web's most popular radio frequency engineering site (2 ltrs. +
1 wd.) 61. Greek letter used for resistance 63. One port on a FET (pl.) 66. Ham's code for
"Station is leaving the net." 67. European equivalent to the U.L. 68. Cellphone band below PCS
70. Opening for airflow 72. Unit of energy 74. Tied a bundle of wires together 76. Broadband
Signal Intrusion (abbr.) 78. The amount of matter that a body contains 80. Amateur Radio Association
(abbr.) 83. Read-only (abbr.) 85. Ham abbreviation indicating contacts with all major land masses
87. Offset Quadrature Phase Shift Keying 88. Similar to a laser, but at lower frequencies 91.
Mate a plug to a jack 93. Chemical symbol for praseodymium 94. Network department (abbr.) 95.
Infrared (abbr.) 96. A measure of receiver quality (abbr.) 97. Switch position 98. Type of
flip-flop 100. Chemical symbol for silver 101. Permeability-tuned oscillator (abbr.) 103. Signal-to-noise
ratio (abbr.) 105. One component of a complex number (abbr.) 106. Chemical symbol for lithium
108. The "C" in CDMA 110. Chemical symbol for radon 111. Move from cell to cell 112. One type
of electron spin 113. Online service (abbr.) 115. Unit of time (abbr.) 116. Using the moon
as a passive reflector to establish a signal path; moonbounce (abbr.) 119. Chemical symbol for helium
121. Automated Test Equipment (abbr.) 124. Metric angle units 127. Chemical symbol for neon
128. Upper frequency (abbr.) 129. Decimeter (abbr.) 130. Workplace safety group (abbr.) 131.
Electronics manufacturer with "meatball" logo 132. Chemical symbol for silicon 134. Filter type
that blocks upper frequencies (abbr.) 137. Ham's code for "Shall I increase power?" 138. Last
stage in a transmitter (abbr.) 139. Chemical symbol for krypton 140. RF region defined at less
than wavelength/(2 x pi) 141. A component of a gasoline-powered engine's ignition system, also the
horse's name in Barney Google cartoon (2 wds.) |
1. Opposite of I.D. 2. Radio frequency interference (abbr.) 3. Chemical symbol for selenium
4. Number system which uses only the digits 0 to 7 5. Code for a type of electrical wire insulation
7. Band between RF and BB 8. Chemical symbol for chromium 9. Chemical symbol for holmium 10.
Chemical symbol for francium 11. Put a new program on a computer 16. Voltage regulator type (hyph.)
17. Nordic Mobile Telephone 18. Chemical symbol for plutonium 19. Below ELF 20. CPS 21.
Chemical symbol for neodymium 22. Chemical symbol for lead 23. Chemical symbol for californium
24. Unit of processor calculation speed, abbr. 26. A common battery cell size 27. International
phonetic alphabet letter "Y" 28. Engineering Change Notice (abbr.) 30. Unit of apparent power
(abbr.) 34. Type of high frequency circuit substrate (abbr.) 36. Chemical symbol for tin 38.
Chemical symbol for lawrencium 39. Chemical symbol for strontium 40. Chemical symbol for radium
41. Error checking scheme (abbr.) 43. Chemical symbol for berkelium 46. Grouping of wires or cables
48. Alloy of iron and low percentages of carbon, manganese, chromium, etc. 51. Join a male and a
female connector 53. 1/000 of an amp (abbr.) 55. Unit of length (abbr.) 56. Type of data conversion
device (abbr.) 59. BASIC looping keyword 60. A BPF specification (abbr.) 61. International
phonetic alphabet letter "O" 62. Chemical symbol for gadolinium 64. Flyboy 65. Last statement
in a BASIC program 69. Chemical symbol for antimony 71. List of answers to commonly desired information
about a product or service (abbr.) 73. Chemical symbol for gallium 75. Change from the initial
value due to instability 77. Measure of source / load mismatch (abbr.) 78. Adds information to
a CW signal 79. Longitudinal shape-forming structural element 81. Common average used for sinewaves
(abbr.) 82. A common battery cell size 84. Switch position 86. Non-reactive part of Apparent
Power (2 wds.) 89. A number being either positive or negative 90. Chemical symbol for erbium
92. Type of component package (abbr.) 94. Integrated Services Digital Network (abbr.) 96. Silicon
transistor type (abbr.) 99. Chemical symbol for scandium 102. Type of logic gate 103. Fail-____
switch 104. Home state of Los Alamos lab (abbr.) 105. Chemical symbol for ruthenium 107. Galilean
moon 109. Resistive component of a capacitor's lumped element model (abbr.) 110. Government program
to bring electricity to farms (abbr.) 114. Chemical symbol for lanthanum 117. 1/000 of an inch
118. Thin Shrink Small Outline Package (abbr.) 119. RF & microwaves magazine founded by Gary
Breed, now Summit Technical Media (abbr.) 120. Chemical symbol for europium 122. Time delay (abbr.)
123. Electromagnetic (abbr.) 125. Chemical symbol for argon 126. Logical gate type (pl.) 127.
1e-6 mA 131. Key feature in a high level overvoltage protection device 133. One port of an amplifier
134. 30 kHz to 300 kHz 135. Ratio of circumference to diameter 136. Chemical symbol for thallium
138. Max or min voltage of a waveform (abbr.) 139. Mass unit (abbr.) |
See solution below
Take 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.
2021 | 2020
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| 2017 | 2016
| 2015 | 2014
| 2013 | 2012
| 2011 | 2010
| 2009 | 2008
| 2007 | 2006
| 2005 | 2004
| 2003 | 2002
| 2001 | 2000
| Sudoku
December 25 December 18 December 11 December 4
November 27
November 20
November 13
November 6
October 30 October 23 October 2 September 25 September 18 September 4
August 28
August 21
August 14
August 7
July 31
July 24
July 17
July 10
July 3
June 26
June 19
June 12
June 5
May 29
April 10
March 20
March 13
March 6
February 28
February 21
February 7
January 31
January 24
January 17
January 10
January 3

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