For the sake of avid cruciverbalists amongst us, each week I create a new crossword puzzle that has a theme related to engineering, mathematics,
chemistry, physics, and other technical words. You will never be asked the name of a movie star unless he/she was involved in a technical endeavor (e.g., Hedy Lamarr). Enjoy!
Reproduction of this puzzle without the express permission of RF Cafe is prohibited. acr. = acronym, abbr. = abbreviation,
pl. = plural, wds. = words
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.
1. Government program to bring electricity to farms (abbr.) 4. Secondary cell using a liquid as an electrolyte
(2 wds.) 8. One system's phonetic letter "z" 11. Online service (acr.) 12. Abbreviation for "power" 13. Last stage in transmitter
(abbr., pl.) 15. Amateur Radio Association (abbr.) 16. Negative temperature coefficient (abbr.) 17. Boob tube (abbr.) 18. Common
shorthand reference for a capacitor 21. Chemical symbol for neptunium 22. Parts per million (abbr.) 23. Monte-_____ analysis
25. Sporadic E-layer ionospheric propagation (hyph.) 26. __ + 18 Down, thw world's best engineering website 27. Chemical symbol for
cadmium 28. Type of vector product 29. Electromagnetic (abbr.) 31. A keyboard key 33. Morse Code for "from" 34. Filter type
(abbr.) 37. Chemical symbol for aluminum 39. Chemical symbol for lanthanum 40. Radio frequency interference (abbr.) 43. International
phonetic alphabet letter "K" 45. Its chemical symbol is Li 46. One factor of a polynomial 47. Control and monitoring board
48. Amateur Teleprinter Over Radio (abbr.) 49. One port on a FET 50. Configuring a switch to break electrical contact 54. A length
of transmission line that is open or shorted at one end 56. Direct Digital Synthesis (abbr.) 57. Type of flip-flop 58. Chemical
symbol for selenium 59. "Texting" (abbr.) 60. Word used in describing 2-D and 3-D object dimensions; i.e., 10 mm __ 25 mm 61.
Official Space Shuttle designation (abbr.) 63. Type of current 65. One axis of an ellipse 66. Unit of frequency (archaic, abbr.)
67. Filter type that blocks upper frequencies (abbr.) 69. Device attached to an antenna mast which rotates it so that the antenna can
point in different directions 71. Computer character set (abbr.) 73. Country of RF Cafe's residency 76. Chemical symbol for arsenic
78. Nuclear explosion byproduct harmful to electronics (abbr.) 79. Unit of time (abbr.) 80. The "B" in BER 82. Nordic Mobile Telephone
83. Units of 1000 CPS 85. Type of computer display (abbr.) 86. Peripheral Component Interface (abbr.) 87. Transformer interwinding
connection 88. A fragmented geometric shape that can be split into parts, each of which is a reduced-size copy of the whole 89. Acronym
for path of a fast-circling satellite |
1. Useful distance between Tx and Rx 2. End of transmission (abbr.) 3. Circuit for maintaining constant
voltage (abbr.) 4. National Bureau of Standards radio station (time signals) 5. Chemical symbol for erbium 6. Filter type that
blocks upper frequencies (abbr.) 7. Computer communication scheme (abbr.) 8. Hit a component with an electrostatic discharge 9.
Effective Radiated Power (abbr.) 10. Causes a voltage or current waveform to gradually die out 12. Positively doped silicon (hyph.)
14. Satellite milieu 18. 26 Across + ____, the world's best engineering website 19. Chemical symbol for argon 20. Type of programmable
device (abbr.) 23. Chemical symbol for chromium 24. Opposite of I.D. 30. Battery company 32. Synchronous Digital Hierarchy
33. Degraded or destroyed performance 34. Chemical symbol for berkelium 35. Attenuator configuration (hyph.) 36. Area on a shaft
for accommodating a setscrew (pl.) 38. Chemical symbol for lithium 39. Chemical symbol for lutetium 40. Factor of a polynomial
41. Online venue for posting comments & reading replies 42. Network department (abbr.) 44. Exponent that returns the original
number 46. A common RS-232 serial bus command (abbr.) 49. Chemical symbol for gadolinium 51. Unit of time (abbr.) 52. Mate
to a bolt 53. Unit of time (abbr.) 55. Filter type that blocks frequencies in a specified band (abbr.) 60. Term used to interrupt
a conversation on a repeater to indicate that there is an emergency or urgent message 61. Society of Civil and Structural Engineers
(abbr.) 62. Describes when a synchronous motor loses phase lock 64. _____ factor, the peak-to-average waveform value 65. Log onto
a hard drive 66. 1/000 of an amp (abbr.) 68. Ratio of circumference to diameter 70. Proportion of two numbers 72. Centimeter
(abbr.) 74. Miniature threaded RF connector 75. Test document for verifying proper function (acr.) 77. 3 GHz to 30 GHz 79.
Internet address (abbr.) 80. Method of sending high-speed digital signals on electric distribution wires, a Ham's nemesis (acr.)
81. Current-voltage phase mnemonic 84. Chemical symbol for zirconium 85. Chemical symbol for calcium |
See solution below
|