Vacuum Tube Crossword Puzzle
November 16, 2014
| 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. | |||
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December 28 December 21 December 14 December 7 November 30 November 23 November 16 November 9 November 2 October 26 October 19 October 12 October 5 |
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Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
| ACROSS | DOWN |
| 1. Vacuum tube element placed between control grid and plate in a pentode (2 wds.) 7. Chemical symbol for selenium 8. Electromechanical apparatus used to turn an antenna (pl.) 10. Chemical symbol for argon 12. Part of a FOR loop 13. Amateur Radio Emergency Service (abbr.) 16. Decibels above or below a dipole antenna (abbr.) 17. Automatic network analyzer (abbr.) 19. Dielectric material used to form a hermetic seal for thru-wall conductors 22. Straight line joining the center of a circle to the circumference 26. Stock symbol for Microsoft 28. Create a power supply output w/o a ground reference 30. Chemical symbol for helium 31. Common average used for sinewaves (abbr.) 34. Unit for 1,000,000 watt-seconds (abbr.) 36. Co-channel rejection ratio (abbr.) 37. Online service 38. Mr. Tesla's first name 39. Type of high frequency diode (abbr.) 41. Small unit of capacitance (abbr.) 42. Fail-____ switch 44. Negative temperature coefficient (abbr.) 45. Chemical symbol for polonium 46. Chemical symbol for lead 48. Filter type that blocks lower frequencies (abbr.) 49. Frequency at which XL = XC 54. ____RF, passive RF component manufacturer in Huntersville, NC 55. A common battery cell size 58. Dual Tone Multi-Frequency 59. Army-Navy specification prefix 61. Software engineering tool (abbr.) 63. Compound used in vacuum tube to reduce trace elements of gas (pl.) 64. With 53 Down, part of this website's title |
2. One factor of a polynomial 3. Unit of time (abbr.) 4. Equipment 5. Deutsche Industrie Normenausschuss 6. Pulse used to initiate a circuit action 9. Unit of length equal to 5.5 yards (pl.) 11. A disk operation 13. Agilent's EE design software (abbr.) 14. Chemical symbol for tin 15. 36 inches 18. A non-commercial radio service as set by a recognized cognizant government agency (2 wds.) 20. Digital storage oscilloscope (abbr.) 21. Stock symbol for Lockheed Martin 23. Asynchronous Transfer Mode (abbr.) 24. Band between RF and BB 25. FCC's Universal Licensing System (abbr.) 27. Unit of inductance (abbr.) 29. Computer character set (abbr.) 31. Vaccum tube type that permits current flow in only one direction 32. Miniature threaded RF connector 33. Vacuum tube with three electrodes 35. German astronomer who developed a mathematical relationship between planetes and distance from sun (2 wds.) 38. National Television System Committee (abbr.) 40. 300 kHz to 3 MHz 43. Chemical symbol for francium 45. Min-to-max voltage of a waveform (abbr.) 46. Greek letter 47. Ham's code for "Answer in prearranged order." 48. Vacuum tube element that causes free electrons for current flow 50. 1.602E-19 Joules 51. 1e-6 mA 52. Software drafting tool (abbr.) 53. With 64 Across, the world's best engineering website 56. Yttrium Aluminum Garnet 57. Precision approach radar (abbr.) 60. Chemical symbol for neon 61. European equivalent to the U.L. 62. Chemical symbol for einsteinium |
Answer below
