This week's wireless engineering-themed crossword puzzle, as is the case every week, contains only words pertaining to science, engineering, amateur radio, physics, mechanics, mathematics, etc. Making a special appearance is the name of the most recent company to support RF Cafe through advertising. You will see their banner graphical ad appearing in the right page border sometime this week. Opportunities exist for your company to advertise if you are interested.
Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words 
1. Adjusted two equal-frequency signals to be in synchrony
6. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
9. Part of a FOR loop
10. Restores batteries
12. Chemical symbol for francium
13. Ham abbreviation indicating contacts with all major land masses
15. Ham's code for "Are my signals fading?"
18. Numerical basis for decibels (abbr.)
19. Chemical symbol for beryllium
21. Filter type that blocks frequencies in a specified band (abbr.)
23. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
25. Ratio of circumference to diameter
26. Heat measuring instrument
27. Galilean moon
29. Gary Breed's fine magazine on RF & microwaves topics (abbr.)
30. Chemical symbol for einsteinium
31. Front edge of a wing (abbr.)
32. Optical cross-connect (abbr.)
33. Type of chart
35. Angular speed unit
38. Unit of length equal to 5.5 yards
39. Line of Sight (abbr.)
40. Compound used as the frequency determining element in microwave oscillators
41. 1.602E-19 Joules
43. Opposite of a LO
44. Mass unit (abbr., pl.)
46. Decimeter (abbr.)
47. Color content
49. Chemical symbol for manganese
50. Nuclear explosion byproduct harmful to electronics (abbr.)
52. Type of component package (abbr.)
53. Chemical symbol for magnesium
54. Very large unit of apparent power (abbr.)
56. 2 x SSB
57. Spurious RF products created by metal joints (abbr.)
58. Chemical symbol for strontium
60. Name for a voltage that appears in an electrical conductor such as a wire, even though the wire is disconnected from an electrical circuit
64. A BPF specification (abbr.)
66. Lowest operational frequency of a waveguide
67. College grounds | 1. Chemical symbol for platinum
2. Chemical symbol for holmium
3. Type of current
4. Stock symbol for Boeing
5. Chemical symbol for mercury
6. Type of flip-flop
7. Small unit of capacitance (abbr.)
8. Chemical symbol for erbium
11. Most distant point one can transmit / receive as limited by the curvature of the Earth (2 wds.)
13. Write-Once (abbr.)
14. Feedback system used to maintain constant level (abbr.)
16. Specialized mobile radio (abbr.)
17. Chemical symbol for beryllium
18. Average time it takes for a minority carrier to recombine
19. Resistor used to drain voltage off of a high potential supply (pl.)
20. Electrical overstress (abbr.)
21. 10 decibels
22. Type of heat engine operating by cyclic compression and expansion of a gas at different temperature levels such that there is a net conversion of heat energy to mechanical work
24. Name given to a set of practices designed to improve manufacturing processes and eliminate defects (2 wds.)
25. Unit of inductance (abbr.)
28. Amateur radio abbreviation for the Oceania region (abbr.)
33. Chemical symbol for praseodymium
34. Satellite of Jupiter discovered by Galileo
36. Chemical symbol for polonium
37. 1E6 nanoseconds
40. Yard (abbr.)
42. Volt-ohmmeter (abbr.)
43. Amateur radio enthusiast
45. Chemical symbol for tin
47. Hz
48. Electromagnetic interference (abbr.)
51. Chemical symbol for mendelevium
55. Abbreviation for minimum voltage
58. Chemical symbol for scandium
59. Chemical symbol for ruthenium
60. Unit of capacitance (abbr.)
61. Analog-to-Digital (abbr.)
62. Boob tube (abbr.)
63. Unit of frequency (archaic, abbr.)
64. Upper frequency (abbr.)
65. Chemical symbol for cesium |
See solution below
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